using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Data.SqlClient; using System.Xml; using System.Xml.Schema; using System.Xml.Serialization; using System.Xml.XPath; using System.Xml.Xsl; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Collections; using System.Text.RegularExpressions; using System.Diagnostics; using System.IO; using System.Drawing; using System.Runtime.InteropServices; using System.Security.Cryptography; using Microsoft.VisualBasic; using System.Net; using System.Reflection; namespace DAL { public class DBHelper { public const string ASSEMBLY_VERSION = "3.0.0"; private static Regex RegexBr = new Regex(@"(/r/n)", RegexOptions.IgnoreCase); public static Regex RegexFont = new Regex(@"" + "/".*?/"" + @">([/s/S]+?)", GetRegexCompiledOptions()); private static FileVersionInfo AssemblyFileVersion = FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location); private static string TemplateCookieName = string.Format("dnttemplateid_{0}_{1}_{2}", AssemblyFileVersion.FileMajorPart, AssemblyFileVersion.FileMinorPart, AssemblyFileVersion.FileBuildPart); ////// 通过SubString截取字符串 /// /// 传入将要格式化的字符串 /// 要截取字符串的实际长度 /// sNewStr public static string SubString(string strs, int sLength) { if (strs.Length <= sLength) { return strs; } int nStrLength = sLength - 1; string sNewStr = strs.Substring(0, sLength); //sNewStr = sNewStr + "Mores..."; return sNewStr; } ////// 得到正则编译参数设置 /// /// 参数设置 public static RegexOptions GetRegexCompiledOptions() { return RegexOptions.None; } ////// 返回字符串真实长度, 1个汉字长度为 /// /// 字符长度 public static int GetStringLength(string str) { return Encoding.Default.GetBytes(str).Length; } public static bool IsCompriseStr(string str, string stringarray, string strsplit) { if (StrIsNullOrEmpty(stringarray)) return false; str = str.ToLower(); string[] stringArray = SplitString(stringarray.ToLower(), strsplit); for (int i = 0; i < stringArray.Length; i++) { if (str.IndexOf(stringArray[i]) > -1) { return true; } } return false; } ////// 判断指定字符串在指定字符串数组中的位置 /// /// 字符串 /// 字符串数组 /// 是否不区分大小写, true为不区分, false为区分 /// 字符串在指定字符串数组中的位置, 如不存在则返回-1 public static int GetInArrayID(string strSearch, string[] stringArray, bool caseInsensetive) { for (int i = 0; i < stringArray.Length; i++) { if (caseInsensetive) { if (strSearch.ToLower() == stringArray[i].ToLower()) return i; } else if (strSearch == stringArray[i]) return i; } return -1; } ////// 判断指定字符串在指定字符串数组中的位置 /// /// 字符串 /// 字符串数组 /// 字符串在指定字符串数组中的位置, 如不存在则返回-1 public static int GetInArrayID(string strSearch, string[] stringArray) { return GetInArrayID(strSearch, stringArray, true); } ////// 判断指定字符串是否属于指定字符串数组中的一个元素 /// /// 字符串 /// 字符串数组 /// 是否不区分大小写, true为不区分, false为区分 /// 判断结果 public static bool InArray(string strSearch, string[] stringArray, bool caseInsensetive) { return GetInArrayID(strSearch, stringArray, caseInsensetive) >= 0; } ////// 判断指定字符串是否属于指定字符串数组中的一个元素 /// /// 字符串 /// 字符串数组 /// 判断结果 public static bool InArray(string str, string[] stringarray) { return InArray(str, stringarray, false); } ////// 判断指定字符串是否属于指定字符串数组中的一个元素 /// /// 字符串 /// 内部以逗号分割单词的字符串 /// 判断结果 public static bool InArray(string str, string stringarray) { return InArray(str, SplitString(stringarray, ","), false); } ////// 判断指定字符串是否属于指定字符串数组中的一个元素 /// /// 字符串 /// 内部以逗号分割单词的字符串 /// 分割字符串 /// 判断结果 public static bool InArray(string str, string stringarray, string strsplit) { return InArray(str, SplitString(stringarray, strsplit), false); } ////// 判断指定字符串是否属于指定字符串数组中的一个元素 /// /// 字符串 /// 内部以逗号分割单词的字符串 /// 分割字符串 /// 是否不区分大小写, true为不区分, false为区分 /// 判断结果 public static bool InArray(string str, string stringarray, string strsplit, bool caseInsensetive) { return InArray(str, SplitString(stringarray, strsplit), caseInsensetive); } ////// 删除字符串尾部的回车/换行/空格 /// /// /// public static string RTrim(string str) { for (int i = str.Length; i >= 0; i--) { if (str[i].Equals(" ") || str[i].Equals("/r") || str[i].Equals("/n")) { str.Remove(i, 1); } } return str; } ////// 清除给定字符串中的回车及换行符 /// /// 要清除的字符串 /// 清除后返回的字符串 public static string ClearBR(string str) { Match m = null; for (m = RegexBr.Match(str); m.Success; m = m.NextMatch()) { str = str.Replace(m.Groups[0].ToString(), ""); } return str; } ////// 从字符串的指定位置截取指定长度的子字符串 /// /// 原字符串 /// 子字符串的起始位置 /// 子字符串的长度 /// 子字符串 public static string CutString(string str, int startIndex, int length) { if (startIndex >= 0) { if (length < 0) { length = length * -1; if (startIndex - length < 0) { length = startIndex; startIndex = 0; } else startIndex = startIndex - length; } if (startIndex > str.Length) return ""; } else { if (length < 0) return ""; else { if (length + startIndex > 0) { length = length + startIndex; startIndex = 0; } else return ""; } } if (str.Length - startIndex < length) length = str.Length - startIndex; return str.Substring(startIndex, length); } ////// 从字符串的指定位置开始截取到字符串结尾的了符串 /// /// 原字符串 /// 子字符串的起始位置 /// 子字符串 public static string CutString(string str, int startIndex) { return CutString(str, startIndex, str.Length); } ////// 获得当前绝对路径 /// /// 指定的路径，前面不要加/，从根开始 /// 绝对路径 public static string GetMapPath(string strPath) { strPath = strPath.Replace("/", "//"); if (HttpContext.Current != null) { return System.IO.Path.Combine(HttpContext.Current.Server.MapPath("~"), strPath); } else //非web程序引用 { if (strPath.StartsWith("//")) { strPath = strPath.Substring(strPath.IndexOf('//', 1)).TrimStart('//'); } return System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, strPath); } } ////// 返回文件是否存在 /// /// 文件名 /// 是否存在 public static bool FileExists(string filename) { return System.IO.File.Exists(filename); } ////// 以指定的ContentType输出指定文件文件 /// /// 文件路径 /// 输出的文件名 /// 将文件输出时设置的ContentType public static void ResponseFile(string filepath, string filename, string filetype) { Stream iStream = null; // 缓冲区为k byte[] buffer = new Byte[10000]; // 文件长度 int length; // 需要读的数据长度 long dataToRead; try { // 打开文件 iStream = new FileStream(filepath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); // 需要读的数据长度 dataToRead = iStream.Length; HttpContext.Current.Response.ContentType = filetype; HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + UrlEncode(filename.Trim()).Replace("+", " ")); while (dataToRead > 0) { // 检查客户端是否还处于连接状态 if (HttpContext.Current.Response.IsClientConnected) { length = iStream.Read(buffer, 0, 10000); HttpContext.Current.Response.OutputStream.Write(buffer, 0, length); HttpContext.Current.Response.Flush(); buffer = new Byte[10000]; dataToRead = dataToRead - length; } else { // 如果不再连接则跳出死循环 dataToRead = -1; } } } catch (Exception ex) { HttpContext.Current.Response.Write("Error : " + ex.Message); } finally { if (iStream != null) { // 关闭文件 iStream.Close(); } } HttpContext.Current.Response.End(); } ////// 判断文件名是否为浏览器可以直接显示的图片文件名 /// /// 文件名 /// 是否可以直接显示 public static bool IsImgFilename(string filename) { filename = filename.Trim(); if (filename.EndsWith(".") || filename.IndexOf(".") == -1) return false; string extname = filename.Substring(filename.LastIndexOf(".") + 1).ToLower(); return (extname == "jpg" || extname == "jpeg" || extname == "png" || extname == "bmp" || extname == "gif"); } ////// int型转换为string型 /// /// 转换后的string类型结果 public static string IntToStr(int intValue) { return Convert.ToString(intValue); } ////// MD5函数 /// /// 原始字符串 /// MD5结果 public static string MD5(string str) { Byte[] clearBytes = new UnicodeEncoding().GetBytes(str); Byte[] hashedBytes = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(clearBytes); return BitConverter.ToString(hashedBytes).Replace("-", "").ToLower(); } ////// SHA256函数 /// /// /// 原始字符串 /// SHA256结果 public static string SHA256(string str) { byte[] SHA256Data = Encoding.UTF8.GetBytes(str); SHA256Managed Sha256 = new SHA256Managed(); byte[] Result = Sha256.ComputeHash(SHA256Data); return Convert.ToBase64String(Result); //返回长度为字节的字符串 } ////// 字符串如果操过指定长度则将超出的部分用指定字符串代替 /// /// 要检查的字符串 /// 指定长度 /// 用于替换的字符串 /// 截取后的字符串 public static string GetSubString(string p_SrcString, int p_Length, string p_TailString) { return GetSubString(p_SrcString, 0, p_Length, p_TailString); } public static string GetUnicodeSubString(string str, int len, string p_TailString) { string result = string.Empty;// 最终返回的结果 int byteLen = System.Text.Encoding.Default.GetByteCount(str);// 单字节字符长度 int charLen = str.Length;// 把字符平等对待时的字符串长度 int byteCount = 0;// 记录读取进度 int pos = 0;// 记录截取位置 if (byteLen > len) { for (int i = 0; i < charLen; i++) { if (Convert.ToInt32(str.ToCharArray()[i]) > 255)// 按中文字符计算加 byteCount += 2; else// 按英文字符计算加 byteCount += 1; if (byteCount > len)// 超出时只记下上一个有效位置 { pos = i; break; } else if (byteCount == len)// 记下当前位置 { pos = i + 1; break; } } if (pos >= 0) result = str.Substring(0, pos) + p_TailString; } else result = str; return result; } ////// 取指定长度的字符串 /// /// 要检查的字符串 /// 起始位置 /// 指定长度 /// 用于替换的字符串 /// 截取后的字符串 public static string GetSubString(string p_SrcString, int p_StartIndex, int p_Length, string p_TailString) { string myResult = p_SrcString; Byte[] bComments = Encoding.UTF8.GetBytes(p_SrcString); foreach (char c in Encoding.UTF8.GetChars(bComments)) { //当是日文或韩文时(注:中文的范围:/u4e00 - /u9fa5, 日文在/u0800 - /u4e00, 韩文为/xAC00-/xD7A3) if ((c > '/u0800' && c < '/u4e00') || (c > '/xAC00' && c < '/xD7A3')) { //if (System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[/u0800-/u4e00]+") || System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[/xAC00-/xD7A3]+")) //当截取的起始位置超出字段串长度时 if (p_StartIndex >= p_SrcString.Length) return ""; else return p_SrcString.Substring(p_StartIndex, ((p_Length + p_StartIndex) > p_SrcString.Length) ? (p_SrcString.Length - p_StartIndex) : p_Length); } } if (p_Length >= 0) { byte[] bsSrcString = Encoding.Default.GetBytes(p_SrcString); //当字符串长度大于起始位置 if (bsSrcString.Length > p_StartIndex) { int p_EndIndex = bsSrcString.Length; //当要截取的长度在字符串的有效长度范围内 if (bsSrcString.Length > (p_StartIndex + p_Length)) { p_EndIndex = p_Length + p_StartIndex; } else { //当不在有效范围内时,只取到字符串的结尾 p_Length = bsSrcString.Length - p_StartIndex; p_TailString = ""; } int nRealLength = p_Length; int[] anResultFlag = new int[p_Length]; byte[] bsResult = null; int nFlag = 0; for (int i = p_StartIndex; i < p_EndIndex; i++) { if (bsSrcString[i] > 127) { nFlag++; if (nFlag == 3) nFlag = 1; } else nFlag = 0; anResultFlag[i] = nFlag; } if ((bsSrcString[p_EndIndex - 1] > 127) && (anResultFlag[p_Length - 1] == 1)) nRealLength = p_Length + 1; bsResult = new byte[nRealLength]; Array.Copy(bsSrcString, p_StartIndex, bsResult, 0, nRealLength); myResult = Encoding.Default.GetString(bsResult); myResult = myResult + p_TailString; } } return myResult; } ////// 自定义的替换字符串函数 /// public static string ReplaceString(string SourceString, string SearchString, string ReplaceString, bool IsCaseInsensetive) { return Regex.Replace(SourceString, Regex.Escape(SearchString), ReplaceString, IsCaseInsensetive ? RegexOptions.IgnoreCase : RegexOptions.None); } ////// 生成指定数量的html空格符号 /// public static string GetSpacesString(int spacesCount) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < spacesCount; i++) { sb.Append(" "); } return sb.ToString(); } ////// 检测是否符合email格式 /// /// 要判断的email字符串 /// 判断结果 public static bool IsValidEmail(string strEmail) { return Regex.IsMatch(strEmail, @"^[/w/.]+([-]/w+)*@[A-Za-z0-9-_]+[/.][A-Za-z0-9-_]"); } public static bool IsValidDoEmail(string strEmail) { return Regex.IsMatch(strEmail, @"^@((/[[0-9]{1,3}/.[0-9]{1,3}/.[0-9]{1,3}/.)|(([/w-]+/.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(/]?)$"); } ////// 检测是否是正确的Url /// /// 要验证的Url /// 判断结果 public static bool IsURL(string strUrl) { return Regex.IsMatch(strUrl, @"^(http|https)/://([a-zA-Z0-9/./-]+(/:[a-zA-Z0-9/.&%/$/-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])/.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)/.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)/.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9/-]+/.)*[a-zA-Z0-9/-]+/.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(/:[0-9]+)*(/($|[a-zA-Z0-9/./,/?/'///+&%/$#/=~_/-]+))*$"); } public static string GetEmailHostName(string strEmail) { if (strEmail.IndexOf("@") < 0) { return ""; } return strEmail.Substring(strEmail.LastIndexOf("@")).ToLower(); } ////// 判断是否为base64字符串 /// /// /// public static bool IsBase64String(string str) { //A-Z, a-z, 0-9, +, /, = return Regex.IsMatch(str, @"[A-Za-z0-9/+///=]"); } ////// 检测是否有Sql危险字符 /// /// 要判断字符串 /// 判断结果 public static bool IsSafeSqlString(string str) { return !Regex.IsMatch(str, @"[-|;|,|//|/(|/)|/[|/]|/}|/{|%|@|/*|!|/']"); } ////// 对查询字符串进行过滤 /// /// 要被过滤的查询字符串 /// 过滤后的字符串 public static string SqlQueryEncode(string strKeyWords) { if (!System.String.IsNullOrEmpty(strKeyWords) && strKeyWords != "") { strKeyWords = strKeyWords.Replace("'", ""); strKeyWords = strKeyWords.Replace("[", "[[]"); strKeyWords = strKeyWords.Replace("_", "[_]"); strKeyWords = strKeyWords.Replace("&", "[&]"); strKeyWords = strKeyWords.Replace("#", "[#]"); strKeyWords = strKeyWords.Replace("%", "[%]"); } return strKeyWords; } ////// 对SqlQueryEncode函数过滤后的字符串进行还原 /// /// 经过SqlQueryEncode过滤后的字符串 /// 还原后的字符串 public static string SqlQueryDecode(string strKeyWords) { if (!System.String.IsNullOrEmpty(strKeyWords) && strKeyWords != "") { strKeyWords = strKeyWords.Replace("[[]", "["); strKeyWords = strKeyWords.Replace("[_]", "_"); strKeyWords = strKeyWords.Replace("[&]", "&"); strKeyWords = strKeyWords.Replace("[#]", "#"); strKeyWords = strKeyWords.Replace("[%]", "%"); } return strKeyWords; } ////// 对输入框的特殊字串进行过滤，防止SQL注入 /// /// 要被过滤的字符串 /// 过滤后的字符串 public static string SqlInsertEncode(string strFromText) { if (!System.String.IsNullOrEmpty(strFromText) && strFromText != "") { strFromText = strFromText.Replace(";", ";"); strFromText = strFromText.Replace("!", "!"); //strFromText = strFromText.Replace("@", "@"); strFromText = strFromText.Replace("$", "$"); strFromText = strFromText.Replace("*", "*"); strFromText = strFromText.Replace("(", "("); strFromText = strFromText.Replace(")", ")"); strFromText = strFromText.Replace("-", "-"); strFromText = strFromText.Replace("+", "+"); strFromText = strFromText.Replace("=", "="); strFromText = strFromText.Replace("|", "|"); strFromText = strFromText.Replace("//", "\"); strFromText = strFromText.Replace("/", "/"); strFromText = strFromText.Replace(":", ":"); strFromText = strFromText.Replace("/"", """); strFromText = strFromText.Replace("'", "'"); strFromText = strFromText.Replace("<", "<"); strFromText = strFromText.Replace(" ", " "); strFromText = strFromText.Replace(">", ">"); strFromText = strFromText.Replace(" ", " "); } return strFromText; } ////// 检测是否有危险的可能用于链接的字符串 /// /// 要判断字符串 /// 判断结果 public static bool IsSafeUserInfoString(string str) { return !Regex.IsMatch(str, @"^/s*$|^c://con//con$|[%,/*" + "/"" + @"/s/t//&]|游客|^Guest"); } ////// 清理字符串 /// public static string CleanInput(string strIn) { return Regex.Replace(strIn.Trim(), @"[^/w/.@-]", ""); } ////// 返回URL中结尾的文件名 /// public static string GetFilename(string url) { if (url == null) { return ""; } string[] strs1 = url.Split(new char[] { '/' }); return strs1[strs1.Length - 1].Split(new char[] { '?' })[0]; } ////// 根据阿拉伯数字返回月份的名称(可更改为某种语言) /// public static string[] Monthes { get { return new string[] { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" }; } } ////// 替换回车换行符为html换行符 /// public static string StrFormat(string str) { string str2; if (str == null) { str2 = ""; } else { str = str.Replace("/r/n", "
"); str = str.Replace("/n", "
"); str2 = str; } return str2; } ////// 返回标准日期格式string /// public static string GetDate() { return DateTime.Now.ToString("yyyy-MM-dd"); } ////// 返回指定日期格式 /// public static string GetDate(string datetimestr, string replacestr) { if (datetimestr == null) return replacestr; if (datetimestr.Equals("")) return replacestr; try { datetimestr = Convert.ToDateTime(datetimestr).ToString("yyyy-MM-dd").Replace("1900-01-01", replacestr); } catch { return replacestr; } return datetimestr; } ////// 返回标准时间格式string /// public static string GetTime() { return DateTime.Now.ToString("HH:mm:ss"); } ////// 返回标准时间格式string /// public static string GetDateTime() { return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"); } ////// 返回相对于当前时间的相对天数 /// public static string GetDateTime(int relativeday) { return DateTime.Now.AddDays(relativeday).ToString("yyyy-MM-dd HH:mm:ss"); } ////// 返回标准时间格式string /// public static string GetDateTimeF() { return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fffffff"); } ////// 返回标准时间 /// public static string GetStandardDateTime(string fDateTime, string formatStr) { if (fDateTime == "0000-0-0 0:00:00") return fDateTime; return Convert.ToDateTime(fDateTime).ToString(formatStr); } /// /// 返回标准时间yyyy-MM-dd HH:mm:ss /// public static string GetStandardDateTime(string fDateTime) { return GetStandardDateTime(fDateTime, "yyyy-MM-dd HH:mm:ss"); } /// /// 返回标准时间yyyy-MM-dd /// public static string GetStandardDate(string fDate) { return GetStandardDateTime(fDate, "yyyy-MM-dd"); } /// /// /// /// public static bool IsTime(string timeval) { return Regex.IsMatch(timeval, @"^((([0-1]?[0-9])|(2[0-3])):([0-5]?[0-9])(:[0-5]?[0-9])?)$"); } ////// 改正sql语句中的转义字符 /// public static string mashSQL(string str) { return (str == null) ? "" : str.Replace("/'", "'"); } ////// 替换sql语句中的有问题符号 /// public static string ChkSQL(string str) { return (str == null) ? "" : str.Replace("'", "''"); } ////// 转换为静态html /// public void transHtml(string path, string outpath) { Page page = new Page(); StringWriter writer = new StringWriter(); page.Server.Execute(path, writer); FileStream fs; if (File.Exists(page.Server.MapPath("") + "//" + outpath)) { File.Delete(page.Server.MapPath("") + "//" + outpath); fs = File.Create(page.Server.MapPath("") + "//" + outpath); } else { fs = File.Create(page.Server.MapPath("") + "//" + outpath); } byte[] bt = Encoding.Default.GetBytes(writer.ToString()); fs.Write(bt, 0, bt.Length); fs.Close(); } ////// 转换为简体中文 /// public static string ToSChinese(string str) { return Strings.StrConv(str, VbStrConv.SimplifiedChinese, 0); } ////// 转换为繁体中文 /// public static string ToTChinese(string str) { return Strings.StrConv(str, VbStrConv.TraditionalChinese, 0); } ////// 分割字符串 /// public static string[] SplitString(string strContent, string strSplit) { if (!StrIsNullOrEmpty(strContent)) { if (strContent.IndexOf(strSplit) < 0) return new string[] { strContent }; return Regex.Split(strContent, Regex.Escape(strSplit), RegexOptions.IgnoreCase); } else return new string[0] { }; } ////// 分割字符串 /// /// public static string[] SplitString(string strContent, string strSplit, int count) { string[] result = new string[count]; string[] splited = SplitString(strContent, strSplit); for (int i = 0; i < count; i++) { if (i < splited.Length) result[i] = splited[i]; else result[i] = string.Empty; } return result; } ////// 过滤字符串数组中每个元素为合适的大小 /// 当长度小于minLength时，忽略掉,-1为不限制最小长度 /// 当长度大于maxLength时，取其前maxLength位 /// 如果数组中有null元素，会被忽略掉 /// /// 单个元素最小长度 /// 单个元素最大长度 /// public static string[] PadStringArray(string[] strArray, int minLength, int maxLength) { if (minLength > maxLength) { int t = maxLength; maxLength = minLength; minLength = t; } int iMiniStringCount = 0; for (int i = 0; i < strArray.Length; i++) { if (minLength > -1 && strArray[i].Length < minLength) { strArray[i] = null; continue; } if (strArray[i].Length > maxLength) strArray[i] = strArray[i].Substring(0, maxLength); iMiniStringCount++; } string[] result = new string[iMiniStringCount]; for (int i = 0, j = 0; i < strArray.Length && j < result.Length; i++) { if (strArray[i] != null && strArray[i] != string.Empty) { result[j] = strArray[i]; j++; } } return result; } ////// 分割字符串 /// /// 被分割的字符串 /// 分割符 /// 忽略重复项 /// 单个元素最大长度 /// public static string[] SplitString(string strContent, string strSplit, bool ignoreRepeatItem, int maxElementLength) { string[] result = SplitString(strContent, strSplit); return ignoreRepeatItem ? DistinctStringArray(result, maxElementLength) : result; } public static string[] SplitString(string strContent, string strSplit, bool ignoreRepeatItem, int minElementLength, int maxElementLength) { string[] result = SplitString(strContent, strSplit); if (ignoreRepeatItem) { result = DistinctStringArray(result); } return PadStringArray(result, minElementLength, maxElementLength); } ////// 分割字符串 /// /// 被分割的字符串 /// 分割符 /// 忽略重复项 /// public static string[] SplitString(string strContent, string strSplit, bool ignoreRepeatItem) { return SplitString(strContent, strSplit, ignoreRepeatItem, 0); } ////// 清除字符串数组中的重复项 /// /// 字符串数组 /// 字符串数组中单个元素的最大长度 /// public static string[] DistinctStringArray(string[] strArray, int maxElementLength) { Hashtable h = new Hashtable(); foreach (string s in strArray) { string k = s; if (maxElementLength > 0 && k.Length > maxElementLength) { k = k.Substring(0, maxElementLength); } h[k.Trim()] = s; } string[] result = new string[h.Count]; h.Keys.CopyTo(result, 0); return result; } ////// 清除字符串数组中的重复项 /// /// 字符串数组 /// public static string[] DistinctStringArray(string[] strArray) { return DistinctStringArray(strArray, 0); } ////// 替换html字符 /// public static string EncodeHtml(string strHtml) { if (strHtml != "") { strHtml = strHtml.Replace(",", "&def"); strHtml = strHtml.Replace("'", "&dot"); strHtml = strHtml.Replace(";", "&dec"); return strHtml; } return ""; } ////// 进行指定的替换(脏字过滤) /// public static string StrFilter(string str, string bantext) { string text1 = "", text2 = ""; string[] textArray1 = SplitString(bantext, "/r/n"); for (int num1 = 0; num1 < textArray1.Length; num1++) { text1 = textArray1[num1].Substring(0, textArray1[num1].IndexOf("=")); text2 = textArray1[num1].Substring(textArray1[num1].IndexOf("=") + 1); str = str.Replace(text1, text2); } return str; } ////// 获得伪静态页码显示链接 /// /// 当前页数 /// 总页数 /// 超级链接地址 /// 周边页码显示个数上限 /// 页码html public static string GetStaticPageNumbers(int curPage, int countPage, string url, string expname, int extendPage) { return GetStaticPageNumbers(curPage, countPage, url, expname, extendPage, 0); } ////// 获得伪静态页码显示链接 /// /// 当前页数 /// 总页数 /// 超级链接地址 /// 周边页码显示个数上限 /// 当前版块是否使用URL重写 /// 页码html public static string GetStaticPageNumbers(int curPage, int countPage, string url, string expname, int extendPage, int forumrewrite) { int startPage = 1; int endPage = 1; string t1 = "" + url + "-1" + expname + "/">«"; string t2 = "" + url + "-" + countPage + expname + "/">»"; if (forumrewrite == 1) { t1 = "" + url + "/1/list" + expname + "/">«"; t2 = "" + url + "/" + countPage + "/list" + expname + "/">»"; } if (forumrewrite == 2) { t1 = "" + url + "//">«"; t2 = "" + url + "/" + countPage + "//">»"; } if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = ""; } } else { endPage = extendPage; t1 = ""; } } else { startPage = 1; endPage = countPage; t1 = ""; t2 = ""; } StringBuilder s = new StringBuilder(""); s.Append(t1); for (int i = startPage; i <= endPage; i++) { if (i == curPage) { s.Append(""); s.Append(i); s.Append(""); } else { s.Append(""); if (forumrewrite == 1) { s.Append(url); if (i != 1) { s.Append("/"); s.Append(i); } s.Append("/list"); s.Append(expname); } else if (forumrewrite == 2) { s.Append(url); s.Append("/"); if (i != 1) { s.Append(i); s.Append("/"); } } else { s.Append(url); if (i != 1) { s.Append("-"); s.Append(i); } s.Append(expname); } s.Append("/">"); s.Append(i); s.Append(""); } } s.Append(t2); return s.ToString(); } ////// 获得帖子的伪静态页码显示链接 /// /// /// 总页数 /// 超级链接地址 /// 周边页码显示个数上限 /// 页码html public static string GetPostPageNumbers(int countPage, string url, string expname, int extendPage) { int startPage = 1; int endPage = 1; int curPage = 1; string t1 = "" + url + "-1" + expname + "/">«"; string t2 = "" + url + "-" + countPage + expname + "/">»"; if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = ""; } } else { endPage = extendPage; t1 = ""; } } else { startPage = 1; endPage = countPage; t1 = ""; t2 = ""; } StringBuilder s = new StringBuilder(""); s.Append(t1); for (int i = startPage; i <= endPage; i++) { s.Append(""); s.Append(url); s.Append("-"); s.Append(i); s.Append(expname); s.Append("/">"); s.Append(i); s.Append(""); } s.Append(t2); return s.ToString(); } ////// 获得页码显示链接 /// /// 当前页数 /// 总页数 /// 超级链接地址 /// 周边页码显示个数上限 /// 页码html public static string GetPageNumbers(int curPage, int countPage, string url, int extendPage) { return GetPageNumbers(curPage, countPage, url, extendPage, "page"); } ////// 获得页码显示链接 /// /// 当前页数 /// 总页数 /// 超级链接地址 /// 周边页码显示个数上限 /// 页码标记 /// 页码html public static string GetPageNumbers(int curPage, int countPage, string url, int extendPage, string pagetag) { return GetPageNumbers(curPage, countPage, url, extendPage, pagetag, null); } ////// 获得页码显示链接 /// /// 当前页数 /// 总页数 /// 超级链接地址 /// 周边页码显示个数上限 /// 页码标记 /// 锚点 /// 页码html public static string GetPageNumbers(int curPage, int countPage, string url, int extendPage, string pagetag, string anchor) { if (pagetag == "") pagetag = "page"; int startPage = 1; int endPage = 1; if (url.IndexOf("?") > 0) url = url + "&"; else url = url + "?"; string t1 = "" + url + "&" + pagetag + "=1"; string t2 = "" + url + "&" + pagetag + "=" + countPage; if (anchor != null) { t1 += anchor; t2 += anchor; } t1 += "/">«"; t2 += "/">»"; if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = ""; } } else { endPage = extendPage; t1 = ""; } } else { startPage = 1; endPage = countPage; t1 = ""; t2 = ""; } StringBuilder s = new StringBuilder(""); s.Append(t1); for (int i = startPage; i <= endPage; i++) { if (i == curPage) { s.Append(""); s.Append(i); s.Append(""); } else { s.Append(""); s.Append(url); s.Append(pagetag); s.Append("="); s.Append(i); if (anchor != null) { s.Append(anchor); } s.Append("/">"); s.Append(i); s.Append(""); } } s.Append(t2); return s.ToString(); } ////// 返回HTML 字符串的编码结果 /// /// 字符串 /// 编码结果 public static string HtmlEncode(string str) { return HttpUtility.HtmlEncode(str); } ////// 返回HTML 字符串的解码结果 /// /// 字符串 /// 解码结果 public static string HtmlDecode(string str) { return HttpUtility.HtmlDecode(str); } ////// 返回URL 字符串的编码结果 /// /// 字符串 /// 编码结果 public static string UrlEncode(string str) { return HttpUtility.UrlEncode(str); } ////// 返回URL 字符串的编码结果 /// /// 字符串 /// 解码结果 public static string UrlDecode(string str) { return HttpUtility.UrlDecode(str); } ////// 返回指定目录下的非UTF8 字符集文件 /// /// 路径 /// 文件名的字符串数组 public static string[] FindNoUTF8File(string Path) { StringBuilder filelist = new StringBuilder(); DirectoryInfo Folder = new DirectoryInfo(Path); FileInfo[] subFiles = Folder.GetFiles(); for (int j = 0; j < subFiles.Length; j++) { if (subFiles[j].Extension.ToLower().Equals(".htm")) { FileStream fs = new FileStream(subFiles[j].FullName, FileMode.Open, FileAccess.Read); bool bUtf8 = IsUTF8(fs); fs.Close(); if (!bUtf8) { filelist.Append(subFiles[j].FullName); filelist.Append("/r/n"); } } } return SplitString(filelist.ToString(), "/r/n"); } //0000 0000-0000 007F - 0xxxxxxx (ascii converts to 1 octet!) //0000 0080-0000 07FF - 110xxxxx 10xxxxxx ( 2 octet format) //0000 0800-0000 FFFF - 1110xxxx 10xxxxxx 10xxxxxx (3 octet format) ////// 判断文件流是否为UTF8字符集 /// /// 文件流 /// 判断结果 private static bool IsUTF8(FileStream sbInputStream) { int i; byte cOctets; // octets to go in this UTF-8 encoded character byte chr; bool bAllAscii = true; long iLen = sbInputStream.Length; cOctets = 0; for (i = 0; i < iLen; i++) { chr = (byte)sbInputStream.ReadByte(); if ((chr & 0x80) != 0) bAllAscii = false; if (cOctets == 0) { if (chr >= 0x80) { do { chr <<= 1; cOctets++; } while ((chr & 0x80) != 0); cOctets--; if (cOctets == 0) return false; } } else { if ((chr & 0xC0) != 0x80) return false; cOctets--; } } if (cOctets > 0) return false; if (bAllAscii) return false; return true; } ////// 格式化字节数字符串 /// /// /// public static string FormatBytesStr(int bytes) { if (bytes > 1073741824) return ((double)(bytes / 1073741824)).ToString("0") + "G"; if (bytes > 1048576) return ((double)(bytes / 1048576)).ToString("0") + "M"; if (bytes > 1024) return ((double)(bytes / 1024)).ToString("0") + "K"; return bytes.ToString() + "Bytes"; } ////// 将long型数值转换为Int32类型 /// /// /// public static int SafeInt32(object objNum) { if (objNum == null) return 0; string strNum = objNum.ToString(); if (IsNumeric(strNum)) { if (strNum.ToString().Length > 9) { if (strNum.StartsWith("-")) return int.MinValue; else return int.MaxValue; } return Int32.Parse(strNum); } else return 0; } ////// 返回相差的秒数 /// /// /// /// public static int StrDateDiffSeconds(string Time, int Sec) { TimeSpan ts = DateTime.Now - DateTime.Parse(Time).AddSeconds(Sec); if (ts.TotalSeconds > int.MaxValue) return int.MaxValue; else if (ts.TotalSeconds < int.MinValue) return int.MinValue; return (int)ts.TotalSeconds; } ////// 返回相差的分钟数 /// /// /// /// public static int StrDateDiffMinutes(string time, int minutes) { if (StrIsNullOrEmpty(time)) return 1; TimeSpan ts = DateTime.Now - DateTime.Parse(time).AddMinutes(minutes); if (ts.TotalMinutes > int.MaxValue) return int.MaxValue; else if (ts.TotalMinutes < int.MinValue) return int.MinValue; return (int)ts.TotalMinutes; } ////// 返回相差的小时数 /// /// /// /// public static int StrDateDiffHours(string time, int hours) { if (StrIsNullOrEmpty(time)) return 1; TimeSpan ts = DateTime.Now - DateTime.Parse(time).AddHours(hours); if (ts.TotalHours > int.MaxValue) return int.MaxValue; else if (ts.TotalHours < int.MinValue) return int.MinValue; return (int)ts.TotalHours; } ////// 建立文件夹 /// /// /// public static bool CreateDir(string name) { return MakeSureDirectoryPathExists(name); } ////// 为脚本替换特殊字符串 /// /// /// public static string ReplaceStrToScript(string str) { return str.Replace("//", "////").Replace("'", "//'").Replace("/"", "///""); } ////// 是否为ip /// /// /// public static bool IsIP(string ip) { return Regex.IsMatch(ip, @"^((2[0-4]/d|25[0-5]|[01]?/d/d?)/.){3}(2[0-4]/d|25[0-5]|[01]?/d/d?)$"); } public static bool IsIPSect(string ip) { return Regex.IsMatch(ip, @"^((2[0-4]/d|25[0-5]|[01]?/d/d?)/.){2}((2[0-4]/d|25[0-5]|[01]?/d/d?|/*)/.)(2[0-4]/d|25[0-5]|[01]?/d/d?|/*)$"); } ////// 返回指定IP是否在指定的IP数组所限定的范围内, IP数组内的IP地址可以使用*表示该IP段任意, 例如.168.1.* /// /// /// /// public static bool InIPArray(string ip, string[] iparray) { string[] userip = SplitString(ip, @"."); for (int ipIndex = 0; ipIndex < iparray.Length; ipIndex++) { string[] tmpip = SplitString(iparray[ipIndex], @"."); int r = 0; for (int i = 0; i < tmpip.Length; i++) { if (tmpip[i] == "*") return true; if (userip.Length > i) { if (tmpip[i] == userip[i]) r++; else break; } else break; } if (r == 4) return true; } return false; } ////// 获得Assembly版本号 /// /// public static string GetAssemblyVersion() { return string.Format("{0}.{1}.{2}", AssemblyFileVersion.FileMajorPart, AssemblyFileVersion.FileMinorPart, AssemblyFileVersion.FileBuildPart); } ////// 获得Assembly产品名称 /// /// public static string GetAssemblyProductName() { return AssemblyFileVersion.ProductName; } ////// 获得Assembly产品版权 /// /// public static string GetAssemblyCopyright() { return AssemblyFileVersion.LegalCopyright; } ////// 创建目录 /// /// 名称 /// 创建是否成功 [DllImport("dbgHelp", SetLastError = true)] private static extern bool MakeSureDirectoryPathExists(string name); ////// 判断字符串是否是yy-mm-dd字符串 /// /// 待判断字符串 /// 判断结果 public static bool IsDateString(string str) { return Regex.IsMatch(str, @"(/d{4})-(/d{1,2})-(/d{1,2})"); } ////// 移除Html标记 /// /// /// public static string RemoveHtml(string content) { return Regex.Replace(content, @"<[^>]*>", string.Empty, RegexOptions.IgnoreCase); } ////// 过滤HTML中的不安全标签 /// /// /// public static string RemoveUnsafeHtml(string content) { content = Regex.Replace(content, @"(/<|/s+)o([a-z]+/s?=)", "$1$2", RegexOptions.IgnoreCase); content = Regex.Replace(content, @"(script|frame|form|meta|behavior|style)([/s|:|>])+", "$1.$2", RegexOptions.IgnoreCase); return content; } ////// 将用户组Title中的font标签去掉 /// /// 用户组Title /// public static string RemoveFontTag(string title) { Match m = RegexFont.Match(title); if (m.Success) return m.Groups[1].Value; return title; } ////// 判断对象是否为Int32类型的数字 /// /// /// public static bool IsNumeric(string expression) { if (expression != null) { string str = expression; if (str.Length > 0 && str.Length <= 11 && Regex.IsMatch(str, @"^[-]?[0-9]*[.]?[0-9]*$")) { if ((str.Length < 10) || (str.Length == 10 && str[0] == '1') || (str.Length == 11 && str[0] == '-' && str[1] == '1')) return true; } } return false; } ////// 是否为Double类型 /// /// /// public static bool IsDouble(object expression) { if (expression != null) return Regex.IsMatch(expression.ToString(), @"^([0-9])[0-9]*(/./w*)?$"); return false; } ////// 判断给定的字符串数组(strNumber)中的数据是不是都为数值型 /// /// 要确认的字符串数组 /// 是则返加true 不是则返回false public static bool IsNumericArray(string[] strNumber) { if (strNumber == null) return false; if (strNumber.Length < 1) return false; foreach (string id in strNumber) { if (!IsNumeric(id)) return false; } return true; } ////// 从HTML中获取文本,保留br,p,img /// /// /// public static string GetTextFromHTML(string HTML) { System.Text.RegularExpressions.Regex regEx = new System.Text.RegularExpressions.Regex(@" ]*>", System.Text.RegularExpressions.RegexOptions.IgnoreCase); return regEx.Replace(HTML, ""); } ////// string型转换为bool型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的bool类型结果 public static bool StrToBool(object expression, bool defValue) { if (expression != null) return StrToBool(expression, defValue); return defValue; } ////// string型转换为bool型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的bool类型结果 public static bool StrToBool(string expression, bool defValue) { if (expression != null) { if (string.Compare(expression, "true", true) == 0) return true; else if (string.Compare(expression, "false", true) == 0) return false; } return defValue; } ////// 将对象转换为Int32类型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static int ObjectToInt(object expression) { return ObjectToInt(expression, 0); } ////// 将对象转换为Int32类型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static int ObjectToInt(object expression, int defValue) { if (expression != null) return StrToInt(expression.ToString(), defValue); return defValue; } ////// 将对象转换为Int32类型,转换失败返回 /// /// 要转换的字符串 /// 转换后的int类型结果 public static int StrToInt(string str) { return StrToInt(str, 0); } ////// 将对象转换为Int32类型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static int StrToInt(string str, int defValue) { if (string.IsNullOrEmpty(str) || str.Trim().Length >= 11 || !Regex.IsMatch(str.Trim(), @"^([-]|[0-9])[0-9]*(/./w*)?$")) return defValue; int rv; if (Int32.TryParse(str, out rv)) return rv; return Convert.ToInt32(StrToFloat(str, defValue)); } ////// string型转换为float型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static float StrToFloat(object strValue, float defValue) { if ((strValue == null)) return defValue; return StrToFloat(strValue.ToString(), defValue); } ////// string型转换为float型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static float ObjectToFloat(object strValue, float defValue) { if ((strValue == null)) return defValue; return StrToFloat(strValue.ToString(), defValue); } ////// string型转换为float型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static float ObjectToFloat(object strValue) { return ObjectToFloat(strValue.ToString(), 0); } ////// string型转换为float型 /// /// 要转换的字符串 /// 转换后的int类型结果 public static float StrToFloat(object strValue) { if ((strValue == null)) return 0; return StrToFloat(strValue.ToString(), 0); } ////// string型转换为float型 /// /// 要转换的字符串 /// 缺省值 /// 转换后的int类型结果 public static float StrToFloat(string strValue, float defValue) { if ((strValue == null) || (strValue.Length > 10)) return defValue; float intValue = defValue; if (strValue != null) { bool IsFloat = Regex.IsMatch(strValue, @"^([-]|[0-9])[0-9]*(/./w*)?$"); if (IsFloat) float.TryParse(strValue, out intValue); } return intValue; } public static string AdDeTime(int times) { return (DateTime.Now).AddMinutes(times).ToString(); } ////// 验证是否为正整数 /// /// /// public static bool IsInt(string str) { return Regex.IsMatch(str, @"^[0-9]*$"); } public static bool IsRuleTip(Hashtable NewHash, string ruletype, out string key) { key = ""; foreach (DictionaryEntry str in NewHash) { try { string[] single = SplitString(str.Value.ToString(), "/r/n"); foreach (string strs in single) { if (strs != "") switch (ruletype.Trim().ToLower()) { case "email": if (IsValidDoEmail(strs.ToString()) == false) throw new Exception(); break; case "ip": if (IsIPSect(strs.ToString()) == false) throw new Exception(); break; case "timesect": string[] splitetime = strs.Split('-'); if (IsTime(splitetime[1].ToString()) == false || IsTime(splitetime[0].ToString()) == false) throw new Exception(); break; } } } catch { key = str.Key.ToString(); return false; } } return true; } ////// 删除最后一个字符 /// /// /// public static string ClearLastChar(string str) { return (str == "") ? "" : str.Substring(0, str.Length - 1); } ////// 备份文件 /// /// 源文件名 /// 目标文件名 /// 当目标文件存在时是否覆盖 /// 操作是否成功 public static bool BackupFile(string sourceFileName, string destFileName, bool overwrite) { if (!System.IO.File.Exists(sourceFileName)) throw new FileNotFoundException(sourceFileName + "文件不存在！"); if (!overwrite && System.IO.File.Exists(destFileName)) return false; try { System.IO.File.Copy(sourceFileName, destFileName, true); return true; } catch (Exception e) { throw e; } } ////// 备份文件,当目标文件存在时覆盖 /// /// 源文件名 /// 目标文件名 /// 操作是否成功 public static bool BackupFile(string sourceFileName, string destFileName) { return BackupFile(sourceFileName, destFileName, true); } ////// 恢复文件 /// /// 备份文件名 /// 要恢复的文件名 /// 要恢复文件再次备份的名称,如果为null,则不再备份恢复文件 /// 操作是否成功 public static bool RestoreFile(string backupFileName, string targetFileName, string backupTargetFileName) { try { if (!System.IO.File.Exists(backupFileName)) throw new FileNotFoundException(backupFileName + "文件不存在！"); if (backupTargetFileName != null) { if (!System.IO.File.Exists(targetFileName)) throw new FileNotFoundException(targetFileName + "文件不存在！无法备份此文件！"); else System.IO.File.Copy(targetFileName, backupTargetFileName, true); } System.IO.File.Delete(targetFileName); System.IO.File.Copy(backupFileName, targetFileName); } catch (Exception e) { throw e; } return true; } public static bool RestoreFile(string backupFileName, string targetFileName) { return RestoreFile(backupFileName, targetFileName, null); } ////// 获取记录模板id的cookie名称 /// /// public static string GetTemplateCookieName() { return TemplateCookieName; } ////// 将全角数字转换为数字 /// /// /// public static string SBCCaseToNumberic(string SBCCase) { char[] c = SBCCase.ToCharArray(); for (int i = 0; i < c.Length; i++) { byte[] b = System.Text.Encoding.Unicode.GetBytes(c, i, 1); if (b.Length == 2) { if (b[1] == 255) { b[0] = (byte)(b[0] + 32); b[1] = 0; c[i] = System.Text.Encoding.Unicode.GetChars(b)[0]; } } } return new string(c); } ////// 将字符串转换为Color /// /// /// public static Color ToColor(string color) { int red, green, blue = 0; char[] rgb; color = color.TrimStart('#'); color = Regex.Replace(color.ToLower(), "[g-zG-Z]", ""); switch (color.Length) { case 3: rgb = color.ToCharArray(); red = Convert.ToInt32(rgb[0].ToString() + rgb[0].ToString(), 16); green = Convert.ToInt32(rgb[1].ToString() + rgb[1].ToString(), 16); blue = Convert.ToInt32(rgb[2].ToString() + rgb[2].ToString(), 16); return Color.FromArgb(red, green, blue); case 6: rgb = color.ToCharArray(); red = Convert.ToInt32(rgb[0].ToString() + rgb[1].ToString(), 16); green = Convert.ToInt32(rgb[2].ToString() + rgb[3].ToString(), 16); blue = Convert.ToInt32(rgb[4].ToString() + rgb[5].ToString(), 16); return Color.FromArgb(red, green, blue); default: return Color.FromName(color); } } ////// 转换长文件名为短文件名 /// /// /// /// /// /// /// public static string ConvertSimpleFileName(string fullname, string repstring, int leftnum, int rightnum, int charnum) { string simplefilename = "", leftstring = "", rightstring = "", filename = ""; string extname = GetFileExtName(fullname); if (StrIsNullOrEmpty(extname)) throw new Exception("字符串不含有扩展名信息"); int filelength = 0, dotindex = 0; dotindex = fullname.LastIndexOf('.'); filename = fullname.Substring(0, dotindex); filelength = filename.Length; if (dotindex > charnum) { leftstring = filename.Substring(0, leftnum); rightstring = filename.Substring(filelength - rightnum, rightnum); if (repstring == "" || repstring == null) simplefilename = leftstring + rightstring + "." + extname; else simplefilename = leftstring + repstring + rightstring + "." + extname; } else simplefilename = fullname; return simplefilename; } //public static string GetFileExtName(string filename) //{ // string[] array = filename.Trim().Split('.'); // Array.Reverse(array); // return array[0].ToString(); //} ////// 将数据表转换成JSON类型串 /// /// 要转换的数据表 /// public static StringBuilder DataTableToJSON(System.Data.DataTable dt) { return DataTableToJson(dt, true); } ////// 将数据表转换成JSON类型串 /// /// 要转换的数据表 /// 数据表转换结束后是否dispose掉 /// public static StringBuilder DataTableToJson(System.Data.DataTable dt, bool dt_dispose) { StringBuilder stringBuilder = new StringBuilder(); stringBuilder.Append("[/r/n"); //数据表字段名和类型数组 string[] dt_field = new string[dt.Columns.Count]; int i = 0; string formatStr = "{{"; string fieldtype = ""; foreach (System.Data.DataColumn dc in dt.Columns) { dt_field[i] = dc.Caption.ToLower().Trim(); formatStr += "'" + dc.Caption.ToLower().Trim() + "':"; fieldtype = dc.DataType.ToString().Trim().ToLower(); if (fieldtype.IndexOf("int") > 0 || fieldtype.IndexOf("deci") > 0 || fieldtype.IndexOf("floa") > 0 || fieldtype.IndexOf("doub") > 0 || fieldtype.IndexOf("bool") > 0) { formatStr += "{" + i + "}"; } else { formatStr += "'{" + i + "}'"; } formatStr += ","; i++; } if (formatStr.EndsWith(",")) formatStr = formatStr.Substring(0, formatStr.Length - 1);//去掉尾部","号 formatStr += "}},"; i = 0; object[] objectArray = new object[dt_field.Length]; foreach (System.Data.DataRow dr in dt.Rows) { foreach (string fieldname in dt_field) { //对/ , ' 符号进行转换 objectArray[i] = dr[dt_field[i]].ToString().Trim().Replace("//", "////").Replace("'", "//'"); switch (objectArray[i].ToString()) { case "True": { objectArray[i] = "true"; break; } case "False": { objectArray[i] = "false"; break; } default: break; } i++; } i = 0; stringBuilder.Append(string.Format(formatStr, objectArray)); } if (stringBuilder.ToString().EndsWith(",")) stringBuilder.Remove(stringBuilder.Length - 1, 1);//去掉尾部","号 if (dt_dispose) dt.Dispose(); return stringBuilder.Append("/r/n];"); } ////// 字段串是否为Null或为""(空) /// /// /// public static bool StrIsNullOrEmpty(string str) { if (str == null || str.Trim() == string.Empty) return true; return false; } ////// 是否为数值串列表，各数值间用","间隔 /// /// /// public static bool IsNumericList(string numList) { if (StrIsNullOrEmpty(numList)) return false; return IsNumericArray(numList.Split(',')); } ////// 检查颜色值是否为/6位的合法颜色 /// /// 待检查的颜色 /// public static bool CheckColorValue(string color) { if (StrIsNullOrEmpty(color)) return false; color = color.Trim().Trim('#'); if (color.Length != 3 && color.Length != 6) return false; //不包含-9 a-f以外的字符 if (!Regex.IsMatch(color, "[^0-9a-f]", RegexOptions.IgnoreCase)) return true; return false; } ////// 获取ajax形式的分页链接 /// /// 当前页数 /// 总页数 /// 回调函数 /// 周边页码显示个数上限 /// public static string GetAjaxPageNumbers(int curPage, int countPage, string callback, int extendPage) { string pagetag = "page"; int startPage = 1; int endPage = 1; string t1 = "" + string.Format(callback, "&" + pagetag + "=1"); string t2 = "" + string.Format(callback, "&" + pagetag + "=" + countPage); t1 += "/">«"; t2 += "/">»"; if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = ""; } } else { endPage = extendPage; t1 = ""; } } else { startPage = 1; endPage = countPage; t1 = ""; t2 = ""; } StringBuilder s = new StringBuilder(""); s.Append(t1); for (int i = startPage; i <= endPage; i++) { if (i == curPage) { s.Append(""); s.Append(i); s.Append(""); } else { s.Append(""); s.Append(string.Format(callback, pagetag + "=" + i)); s.Append("/">"); s.Append(i); s.Append(""); } } s.Append(t2); return s.ToString(); } ////// 根据Url获得源文件内容 /// /// 合法的Url地址 /// public static string GetSourceTextByUrl(string url) { WebRequest request = WebRequest.Create(url); request.Timeout = 20000;//20秒超时 WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream); return sr.ReadToEnd(); } ////// 转换时间为unix时间戳 /// /// 需要传递UTC时间,避免时区误差,例:DataTime.UTCNow /// public static double ConvertToUnixTimestamp(DateTime date) { DateTime origin = new DateTime(1970, 1, 1, 0, 0, 0, 0); TimeSpan diff = date - origin; return Math.Floor(diff.TotalSeconds); } ////// Json特符字符过滤，参见http://www.json.org/ /// /// 要过滤的源字符串 /// 返回过滤的字符串 public static string JsonCharFilter(string sourceStr) { sourceStr = sourceStr.Replace("//", "////"); sourceStr = sourceStr.Replace("/b", "///b"); sourceStr = sourceStr.Replace("/t", "///t"); sourceStr = sourceStr.Replace("/n", "///n"); sourceStr = sourceStr.Replace("/n", "///n"); sourceStr = sourceStr.Replace("/f", "///f"); sourceStr = sourceStr.Replace("/r", "///r"); return sourceStr.Replace("/"", "///""); } ////// 合并字符 /// /// 要合并的源字符串 /// 要被合并到的目的字符串 /// 合并符 /// 合并到的目的字符串 public static string MergeString(string source, string target) { return MergeString(source, target, ","); } ////// 合并字符 /// /// 要合并的源字符串 /// 要被合并到的目的字符串 /// 合并符 /// 并到字符串 public static string MergeString(string source, string target, string mergechar) { if (StrIsNullOrEmpty(target)) target = source; else target += mergechar + source; return target; } ////// 清除UBB标签 /// /// 帖子内容 /// 帖子内容 public static string ClearUBB(string sDetail) { return Regex.Replace(sDetail, @"/[[^/]]*?/]", string.Empty, RegexOptions.IgnoreCase); } ////// 获取站点根目录URL /// /// public static string GetRootUrl(string forumPath) { int port = HttpContext.Current.Request.Url.Port; return string.Format("{0}://{1}{2}{3}", HttpContext.Current.Request.Url.Scheme, HttpContext.Current.Request.Url.Host.ToString(), (port == 80 || port == 0) ? "" : ":" + port, forumPath); } ////// 获取指定文件的扩展名 /// /// 指定文件名 /// 扩展名 public static string GetFileExtName(string fileName) { if (StrIsNullOrEmpty(fileName) || fileName.IndexOf('.') <= 0) return ""; fileName = fileName.ToLower().Trim(); return fileName.Substring(fileName.LastIndexOf('.'), fileName.Length - fileName.LastIndexOf('.')); } } }
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