m0_45474448的博客

注：async修饰的方法是异步方法，直接调用不会阻塞主/调用线程，和主线程并行执行；加await调用则变成同步方法，会阻塞主/调用线程。示例参考：c# async和await 用法(阻塞与不阻塞) - NLazyo - 博客园 (cnblogs.com)...

可空类型修饰符（？）引用类型可以使用空引用表示一个不存在的值，而值类型通常不能表示为空。例如：string str=null; 是正确的，int i=null; 编译器就会报错。为了使值类型也可为空，就可以使用可空类型，即用可空类型修饰符"？“来表示，表现形式为"T？”例如：int? 表示可空的整形，DateTime? 表示可为空的时间。T? 其实是System.Nullable(泛型结构）的缩写形式，也就意味着当你用到T？时编译器编译时会把T？编译成System.Nullable的形式。..

1.引用 Microsoft.Office.Interop.Excel.dll 类库//导出内容，创建Excel表格public class ExcelExport { public static string CurFileName = ""; public static bool MarkExport(List<MarkInfoDTO> markInfoDTOs) { try {

1.引用ICSharpCode.SharpZipLib.dll类库public class ZipFile { public static byte[] bytes; ///压缩文件 //strFilePath 待压缩文件全路径 //strZipPath 输出压缩文件全路径 .zip结尾 public static void FileToZip(string strFilePath, string strZipPath

/// <summary>/// 鼠标控制/// </summary>public class MouseHelper{ private static MouseHelper instance; public static MouseHelper Instance { get { if (instance == null) instance = new MouseH

[DllImport("kernel32.dll")] public static extern IntPtr _lopen(string lpPathName, int iReadWrite); [DllImport("kernel32.dll")] public static extern bool CloseHandle(IntPtr hObject); public const int OF_READWRITE = 2; public const i...

class Program{static void Main(string[] args){//增删改权限CRUD flags = CRUD.Create | CRUD.Delete | CRUD.Update;//去除删除权限flags = flags & ~CRUD.Delete;//添加查询权限flags = flags | CRUD.Read;//判断是否有读取枚举if ((flags & CRUD.Read) == CRUD.Read){ }

using System;using System.Collections.Generic;using System.IO;using System.Text.RegularExpressions;namespace 特殊字符转译{public class StringOperate{/// /// 判断字符串中是否包含非法字符/// /// /// public sta...

using System;using System.Collections;using System.Windows.Forms;namespace CoDesign.Cad.ResourceDialog{/// /// 对ListView点击列标题自动排序功能/// public class ListViewHelper{/// /// 构造函数/// public L...

1.TreeView初始化完后会默认选中第一个节点，触发treeView1_AfterSelect事件，若想不默认选中节点，可将TabStop属性设置为false

需求：TreeView树节点上移下移实现方案：1.用到节点的PrevNode属性，获取上一个同级树节点。2.用到节点的NextNode属性，获取下一个同级树节点。 /// <summary> /// 选中节点上移方法 /// </summary> /// <param name="node"></param> ...

if (IsDate(xText) && IsDate(yText)) { compareResult = CompareDate(xText, yText); } /// <summary> /// 判断字符串是否是日期 /// </summary> /// ...

#region 隐藏CheckBoxs public void treeViewGroupStatements_DrawNode(object sender, DrawTreeNodeEventArgs e) { HideLevelOfTreeView(e.Node); e.DrawDefault = true; } public v...

public partial class Form1 : Form{ public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { int width = 0; List<...

class PDFHelper{/// /// 读取合并的pdf文件名称/// /// 目录/// 导出的路径public static void MergePDF(string pdfpath, string outpath){if (File.Exists(outpath)){File.Delete(outpath);}List pdfFileLst = new Li...

/// /// 阿拉伯数字转换成中文数字/// /// /// public string NumToChinese(string x){string[] pArrayNum = { “零”, “一”, “二”, “三”, “四”, “五”, “六”, “七”, “八”, “九” };//为数字位数建立一个位数组string[] pArrayDigit = { “”, “十”, ...

需求：支持ListView节点拖拽至TreeView，TreeView节点拖拽至ListView，TreeView节点拖拽至TreeView实现方案：需以下三个事件联合使用1.源控件的ItemDrag事件2.目标控件的DragEnter事件3.目标控件的DragDrop事件#region ListView节点拖拽至TreeViewprivate void TlvDwgInfos_Ite...

/// /// 自定义支持多选的TreeView控件/// public class MultiSelectTreeView : TreeView{/// /// This is private member which caches the last treenode user clicked/// private TreeNode lastNode; /// <...

/// /// 将图纸目录中图名相同的记录合并，图号取相同部分，折合A1和张数相加/// /// private void MergeSameDwgName(List<List> selFrameAttInfos){for (int i = 0; i < selFrameAttInfos.Count; i++){for (int j = i + 1; j <...

//重绘Checkbox，支持自定义图标public class CoCheckBox : CheckBox{public CoCheckBox() : base(){//3.获取image路径//DirectoryInfo di = new DirectoryInfo(string.Format(@"{0}…\image", Application.StartupPath));//...

1.文件流形式public class LogManager{ private static string m_RootPath =string.Empty; public static string RootPath { get { try { if (st...