1
. 打开新的窗口并传送参数:
传送参数:
response.write( " <script>window.open('*.aspx?id= " + this .DropDownList1.SelectIndex + " &id1= " + ... + " ')</script> " )
接收参数:
string a = Request.QueryString( " id " );
string b = Request.QueryString( " id1 " );
2 .为按钮添加对话框
Button1.Attributes.Add( " onclick " , " return confirm('确认?') " );
button.attributes.add( " onclick " , " if(confirm('are you sure...?')){return true;}else{return false;} " )
3 .删除表格选定记录
int intEmpID = ( int )MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = " DELETE from Employee where emp_id = " + intEmpID.ToString()
4 .删除表格记录警告
private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e)
{
switch (e.Item.ItemType)
{
case ListItemType.Item :
case ListItemType.AlternatingItem :
case ListItemType.EditItem:
TableCell myTableCell;
myTableCell = e.Item.Cells[ 14 ];
LinkButton myDeleteButton ;
myDeleteButton = (LinkButton)myTableCell.Controls[ 0 ];
myDeleteButton.Attributes.Add( " onclick " , " return confirm('您是否确定要删除这条信息'); " );
break ;
default :
break ;
}
}
5 .点击表格行链接另一页
private void grdCustomer_ItemDataBound( object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
// 点击表格打开
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
e.Item.Attributes.Add( " onclick " , " window.open('Default.aspx?id= " + e.Item.Cells[ 0 ].Text + " '); " );
}
双击表格连接到另一页
在itemDataBind事件中
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
...
e.item.Attributes.Add( " ondblclick " , " location.href='../ShippedGrid.aspx?id= " + OrderItemID + " ' " );
}
双击表格打开新一页
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
...
e.item.Attributes.Add( " ondblclick " , " open('../ShippedGrid.aspx?id= " + OrderItemID + " ') " );
}
★特别注意:【 ? id = 】 处不能为 【 ? id = 】
6 .表格超连接列传递参数
< asp:HyperLinkColumn Target = " _blank " headertext = " ID号 " DataTextField = " id " NavigateUrl = " aaa.aspx?id='<%# DataBinder.Eval(Container.DataItem, " 数据字段1 " )%>' & name='<%# DataBinder.Eval(Container.DataItem, " 数据字段2 " )%>' />
7 .表格点击改变颜色
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onclick " , " this.style.backgroundColor='#99cc00';this.style.color='buttontext';this.style.cursor='default'; " );
}
写在DataGrid的_ItemDataBound里
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onmouseover " , " this.style.backgroundColor='#99cc00';this.style.color='buttontext';this.style.cursor='default'; " );
e.Item.Attributes.Add( " onmouseout " , " this.style.backgroundColor='';this.style.color=''; " );
}
8 .关于日期格式
日期格式设定
DataFormatString = " {0:yyyy-MM-dd} "
我觉得应该在itembound事件中
e.items.cell[ " 你的列 " ].text = DateTime.Parse(e.items.cell[ " 你的列 " ].text.ToString( " yyyy-MM-dd " ))
9 .获取错误信息并到指定页面
不要使用Response.Redirect,而应该使用Server.Transfer
e.g
// in global.asax
protected void Application_Error(Object sender, EventArgs e) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer( " MyErrorPage.aspx " );
// 其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :)
}
Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理
10 .清空Cookie
Cookie.Expires = [DateTime];
Response.Cookies( " UserName " ).Expires = 0
11 .自定义异常处理
// 自定义异常处理类
using System;
using System.Diagnostics;
namespace MyAppException
{
/// <summary>
/// 从系统异常类ApplicationException继承的应用程序异常处理类。
/// 自动将异常内容记录到Windows NT/2000的应用程序日志
/// </summary>
public class AppException:System.ApplicationException
{
public AppException()
{
if (ApplicationConfiguration.EventLogEnabled)
LogEvent( " 出现一个未知错误。 " );
}
public AppException( string message)
{
LogEvent(message);
}
public AppException( string message,Exception innerException)
{
LogEvent(message);
if (innerException != null )
{
LogEvent(innerException.Message);
}
}
// 日志记录类
using System;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
namespace MyEventLog
{
/// <summary>
/// 事件日志记录类,提供事件日志记录支持
/// <remarks>
/// 定义了4个日志记录方法 (error, warning, info, trace)
/// </remarks>
/// </summary>
public class ApplicationLog
{
/// <summary>
/// 将错误信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteError(String message)
{
WriteLog(TraceLevel.Error, message);
}
/// <summary>
/// 将警告信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteWarning(String message)
{
WriteLog(TraceLevel.Warning, message);
}
/// <summary>
/// 将提示信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteInfo(String message)
{
WriteLog(TraceLevel.Info, message);
}
/// <summary>
/// 将跟踪信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteTrace(String message)
{
WriteLog(TraceLevel.Verbose, message);
}
/// <summary>
/// 格式化记录到事件日志的文本信息格式
/// <param name="ex"> 需要格式化的异常对象 </param>
/// <param name="catchInfo"> 异常信息标题字符串. </param>
/// <retvalue>
/// <para> 格式后的异常信息字符串,包括异常内容和跟踪堆栈. </para>
/// </retvalue>
/// </summary>
public static String FormatException(Exception ex, String catchInfo)
{
StringBuilder strBuilder = new StringBuilder();
if (catchInfo != String.Empty)
{
strBuilder.Append(catchInfo).Append( " " );
}
strBuilder.Append(ex.Message).Append( " " ).Append(ex.StackTrace);
return strBuilder.ToString();
}
/// <summary>
/// 实际事件日志写入方法
/// <param name="level"> 要记录信息的级别(error,warning,info,trace). </param>
/// <param name="messageText"> 要记录的文本. </param>
/// </summary>
private static void WriteLog(TraceLevel level, String messageText)
{
try
{
EventLogEntryType LogEntryType;
switch (level)
{
case TraceLevel.Error:
LogEntryType = EventLogEntryType.Error;
break ;
case TraceLevel.Warning:
LogEntryType = EventLogEntryType.Warning;
break ;
case TraceLevel.Info:
LogEntryType = EventLogEntryType.Information;
break ;
case TraceLevel.Verbose:
LogEntryType = EventLogEntryType.SuccessAudit;
break ;
default :
LogEntryType = EventLogEntryType.SuccessAudit;
break ;
}
EventLog eventLog = new EventLog( " Application " , ApplicationConfiguration.EventLogMachineName, ApplicationConfiguration.EventLogSourceName );
// 写入事件日志
eventLog.WriteEntry(messageText, LogEntryType);
}
catch {} // 忽略任何异常
}
} // class ApplicationLog
}
12 .Panel 横向滚动,纵向自动扩展
< asp:panel style = " overflow-x:scroll;overflow-y:auto; " ></ asp:panel >
13 .回车转换成Tab
< script language = " javascript " for = " document " event = " onkeydown " >
if ( event .keyCode == 13 && event .srcElement.type != ' button ' && event .srcElement.type != ' submit ' && event .srcElement.type != ' reset ' && event .srcElement.type != '' && event .srcElement.type != ' textarea ' );
event .keyCode = 9 ;
</ script >
onkeydown = " if(event.keyCode==13) event.keyCode=9 "
http: // dotnet.aspx.cc/exam/enter2tab.aspx
14 .DataGrid超级连接列
DataNavigateUrlField = " 字段名 " DataNavigateUrlFormatString = " http://xx/inc/delete.aspx?ID={0} "
15 .DataGrid行随鼠标变色
private void DGzf_ItemDataBound( object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if (e.Item.ItemType != ListItemType.Header)
{
e.Item.Attributes.Add( " onmouseout " , " this.style.backgroundColor=" " + e.Item.Style[ " BACKGROUND-COLOR " ] + " " " );
e.Item.Attributes.Add( " onmouseover " , " this.style.backgroundColor=" " + " #EFF3F7 " + " " " );
}
}
16 .模板列
< ASP:TEMPLATECOLUMN visible = " False " sortexpression = " demo " headertext = " ID " >
< ITEMTEMPLATE >
< ASP:LABEL text = ' <%# DataBinder.Eval(Container.DataItem, "ArticleID")%> ' runat = " server " width = " 80% " id = " lblColumn " />
</ ITEMTEMPLATE >
</ ASP:TEMPLATECOLUMN >
< ASP:TEMPLATECOLUMN headertext = " 选中 " >
< HEADERSTYLE wrap = " False " horizontalalign = " Center " ></ HEADERSTYLE >
< ITEMTEMPLATE >
< ASP:CHECKBOX id = " chkExport " runat = " server " />
</ ITEMTEMPLATE >
< EDITITEMTEMPLATE >
< ASP:CHECKBOX id = " chkExportON " runat = " server " enabled = " true " />
</ EDITITEMTEMPLATE >
</ ASP:TEMPLATECOLUMN >
后台代码
protected void CheckAll_CheckedChanged( object sender, System.EventArgs e)
{
// 改变列的选定,实现全选或全不选。
CheckBox chkExport ;
if ( CheckAll.Checked)
{
foreach (DataGridItem oDataGridItem in MyDataGrid.Items)
{
chkExport = (CheckBox)oDataGridItem.FindControl( " chkExport " );
chkExport.Checked = true ;
}
}
else
{
foreach (DataGridItem oDataGridItem in MyDataGrid.Items)
{
chkExport = (CheckBox)oDataGridItem.FindControl( " chkExport " );
chkExport.Checked = false ;
}
}
}
17 .数字格式化
【 <% #Container.DataItem( " price " ) %> 的结果是500. 0000 ,怎样格式化为500. 00 ? 】
<% #Container.DataItem( " price " , " {0:¥#,##0.00} " ) %>
int i = 123456 ;
string s = i.ToString( " ###,###.00 " );
18 .日期格式化
【aspx页面内: <% # DataBinder.Eval(Container.DataItem, " Company_Ureg_Date " ) %>
显示为: 2004 - 8 - 11 19 : 44 : 28
我只想要: 2004 - 8 - 11 】
<% # DataBinder.Eval(Container.DataItem, " Company_Ureg_Date " , " {0:yyyy-M-d} " ) %>
应该如何改?
【格式化日期】
取出来,一般是object
((DateTime)objectFromDB).ToString( " yyyy-MM-dd " );
【日期的验证表达式】
A.以下正确的输入格式: [ 2004 - 2 - 29 ], [ 2004 - 02 - 29 10 : 29 : 39 pm], [ 2004 / 12 / 31 ]
^ ((d{ 2 }(([ 02468 ][ 048 ]) | ([ 13579 ][ 26 ]))[ - / s] ? (((( 0 ? [ 13578 ]) | ( 1 [ 02 ]))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 3 [ 01 ]))) | ((( 0 ? [ 469 ]) | ( 11 ))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 30 ))) | ( 0 ? 2 [ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]))))) | (d{ 2 }(([ 02468 ][ 1235679 ]) | ([ 13579 ][ 01345789 ]))[ - / s] ? (((( 0 ? [ 13578 ]) | ( 1 [ 02 ]))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 3 [ 01 ]))) | ((( 0 ? [ 469 ]) | ( 11 ))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 30 ))) | ( 0 ? 2 [ - / s] ? (( 0 ? [ 1 - 9 ]) | ( 1 [ 0 - 9 ]) | ( 2 [ 0 - 8 ]))))))(s((( 0 ? [ 1 - 9 ]) | ( 1 [ 0 - 2 ])):([ 0 - 5 ][ 0 - 9 ])((s) | (:([ 0 - 5 ][ 0 - 9 ])s))([AM | PM | am | pm]{ 2 , 2 }))) ? $
B.以下正确的输入格式:[ 0001 - 12 - 31 ], [ 9999 09 30 ], [ 2002 / 03 / 03 ]
^ d{ 4 }[ - / s] ? (((( 0 [ 13578 ]) | ( 1 [ 02 ]))[ - / s] ? (([ 0 - 2 ][ 0 - 9 ]) | ( 3 [ 01 ]))) | ((( 0 [ 469 ]) | ( 11 ))[ - / s] ? (([ 0 - 2 ][ 0 - 9 ]) | ( 30 ))) | ( 02 [ - / s] ? [ 0 - 2 ][ 0 - 9 ]))$
【大小写转换】
HttpUtility.HtmlEncode( string );
HttpUtility.HtmlDecode( string )
19 .如何设定全局变量
Global.asax中
Application_Start()事件中
添加Application[属性名] = xxx;
就是你的全局变量
20 .怎样作到HyperLinkColumn生成的连接后,点击连接,打开新窗口?
HyperLinkColumn有个属性Target,将器值设置成 " _blank " 即可.(Target = " _blank " )
【ASPNETMENU】点击菜单项弹出新窗口
在你的menuData.xml文件的菜单项中加入URLTarget = " _blank "
如:
<? xml version = " 1.0 " encoding = " GB2312 " ?>
< MenuData ImagesBaseURL = " images/ " >
< MenuGroup >
< MenuItem Label = " 内参信息 " URL = " Infomation.aspx " >
< MenuGroup ID = " BBC " >
< MenuItem Label = " 公告信息 " URL = " Infomation.aspx " URLTarget = " _blank " LeftIcon = " file.gif " />
< MenuItem Label = " 编制信息简报 " URL = " NewInfo.aspx " LeftIcon = " file.gif " />
......
最好将你的aspnetmenu升级到1.2版
21 .委托讨论
http: // community.youkuaiyun.com/Expert/topic/2651/2651579.xml?temp=.7183191
http: // dev.youkuaiyun.com/develop/article/22/22951.shtm
22 .读取DataGrid控件TextBox值
foreach (DataGrid dgi in yourDataGrid.Items)
{
TextBox tb = (TextBox)dgi.FindControl( " yourTextBoxId " );
tb.Text....
}
23 .在DataGrid中有3个模板列包含Textbox分别为 DG_ShuLiang (数量) DG_DanJian(单价) DG_JinE(金额)分别在5. 6 .7列,要求在录入数量及单价的时候自动算出金额即:数量 * 单价 = 金额还要求录入时限制为 数值型.我如何用客户端脚本实现这个功能 ?
〖思归〗
< asp:TemplateColumn HeaderText = " 数量 " >
< ItemTemplate >
< asp:TextBox id = " ShuLiang " runat = ' server ' Text = ' <%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%> '
onkeyup = " javascript:DoCal() "
/>
< asp:RegularExpressionValidator id = " revS " runat = " server " ControlToValidate = " ShuLiang " ErrorMessage = " must be integer " ValidationExpression = " ^d+$ " />
</ ItemTemplate >
</ asp:TemplateColumn >
< asp:TemplateColumn HeaderText = " 单价 " >
< ItemTemplate >
< asp:TextBox id = " DanJian " runat = ' server ' Text = ' <%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%> '
onkeyup = " javascript:DoCal() "
/>
< asp:RegularExpressionValidator id = " revS2 " runat = " server " ControlToValidate = " DanJian " ErrorMessage = " must be numeric " ValidationExpression = " ^d+(.d*)?$ " />
</ ItemTemplate >
</ asp:TemplateColumn >
< asp:TemplateColumn HeaderText = " 金额 " >
< ItemTemplate >
< asp:TextBox id = " JinE " runat = ' server ' Text = ' <%# DataBinder.Eval(Container.DataItem,"DG_JinE")%> ' />
</ ItemTemplate >
</ asp:TemplateColumn >
< script language = " javascript " >
function DoCal()
{
var e = event .srcElement;
var row = e.parentNode.parentNode;
var txts = row.all.tags( " INPUT " );
if ( ! txts.length || txts.length < 3 )
return ;
var q = txts[txts.length - 3 ].value;
var p = txts[txts.length - 2 ].value;
if (isNaN(q) || isNaN(p))
return ;
q = parseInt(q);
p = parseFloat(p);
txts[txts.length - 1 ].value = (q * p).toFixed( 2 );
}
</ script >
24 .datagrid选定比较底下的行时,为什么总是刷新一下,然后就滚动到了最上面,刚才选定的行因屏幕的关系就看不到了
page_load
page.smartNavigation = true
25 .在Datagrid中修改数据,当点击编辑键时,数据出现在文本框中,怎么控制文本框的大小 ?
private void DataGrid1_ItemDataBound(obj sender,DataGridItemEventArgs e)
{
for ( int i = 0 ;i < e.Item.Cells.Count - 1 ;i ++ )
if (e.Item.ItemType == ListItemType.EditType)
{
e.Item.Cells[i].Attributes.Add( " Width " , " 80px " )
}
}
26 .对话框
private static string ScriptBegin = " <script language="JavaScript"> " ;
private static string ScriptEnd = " </script> " ;
public static void ConfirmMessageBox( string PageTarget, string Content)
{
string ConfirmContent = " var retValue=window.confirm(' " + Content + " '); " + " if(retValue){window.location=' " + PageTarget + " ';} " ;
ConfirmContent = ScriptBegin + ConfirmContent + ScriptEnd;
Page ParameterPage = (Page)System.Web.HttpContext.Current.Handler;
ParameterPage.RegisterStartupScript( " confirm " ,ConfirmContent);
// Response.Write(strScript);
}
----------------------------------------
27 . 将时间格式化: string aa = DateTime.Now.ToString( " yyyy年MM月dd日 " );
1.1 取当前年月日时分秒
currentTime = System.DateTime.Now;
1.2 取当前年
int 年 = DateTime.Now.Year;
1.3 取当前月
int 月 = DateTime.Now.Month;
1.4 取当前日
int 日 = DateTime.Now.Day;
1.5 取当前时
int 时 = DateTime.Now.Hour;
1.6 取当前分
int 分 = DateTime.Now.Minute;
1.7 取当前秒
int 秒 = DateTime.Now.Second;
1.8 取当前毫秒
int 毫秒 = DateTime.Now.Millisecond;
28 .自定义分页代码:
先定义变量 : public static int pageCount; // 总页面数
public static int curPageIndex = 1 ; // 当前页面
下一页:
if (DataGrid1.CurrentPageIndex < (DataGrid1.PageCount - 1 ))
{
DataGrid1.CurrentPageIndex += 1 ;
curPageIndex += 1 ;
}
bind(); // DataGrid1数据绑定函数
上一页:
if (DataGrid1.CurrentPageIndex > 0 )
{
DataGrid1.CurrentPageIndex += 1 ;
curPageIndex -= 1 ;
}
bind(); // DataGrid1数据绑定函数
直接页面跳转:
int a = int .Parse(JumpPage.Value.Trim()); // JumpPage.Value.Trim()为跳转值
if (a < DataGrid1.PageCount)
{
this .DataGrid1.CurrentPageIndex = a;
}
bind();
29 .DataGrid使用:
3 .1添加删除确认:
private void DataGrid1_ItemCreated( object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
foreach (DataGridItem di in this .DataGrid1.Items)
{
if (di.ItemType == ListItemType.Item || di.ItemType == ListItemType.AlternatingItem)
{
((LinkButton)di.Cells[ 8 ].Controls[ 0 ]).Attributes.Add( " onclick " , " return confirm('确认删除此项吗?'); " );
}
}
}
3 .2样式交替:
ListItemType itemType = e.Item.ItemType;
if (itemType == ListItemType.Item )
{
e.Item.Attributes[ " onmouseout " ] = " javascript:this.style.backgroundColor='#FFFFFF'; " ;
e.Item.Attributes[ " onmouseover " ] = " javascript:this.style.backgroundColor='#d9ece1';cursor='hand'; " ;
}
else if ( itemType == ListItemType.AlternatingItem)
{
e.Item.Attributes[ " onmouseout " ] = " javascript:this.style.backgroundColor='#a0d7c4'; " ;
e.Item.Attributes[ " onmouseover " ] = " javascript:this.style.backgroundColor='#d9ece1';cursor='hand'; " ;
}
3 .3添加一个编号列:
DataTable dt = c.ExecuteRtnTableForAccess(sqltxt); // 执行sql返回的DataTable
DataColumn dc = dt.Columns.Add( " number " ,System.Type.GetType( " System.String " ));
for ( int i = 0 ;i < dt.Rows.Count;i ++ )
{
dt.Rows[i][ " number " ] = (i + 1 ).ToString();
}
DataGrid1.DataSource = dt;
DataGrid1.DataBind();
3 . 4 DataGrid1中添加一个CheckBox,页面中添加一个全选框
private void CheckBox2_CheckedChanged( object sender, System.EventArgs e)
{
foreach (DataGridItem thisitem in DataGrid1.Items)
{
((CheckBox)thisitem.Cells[ 0 ].Controls[ 1 ]).Checked = CheckBox2.Checked;
}
}
将当前页面中DataGrid1显示的数据全部删除
foreach (DataGridItem thisitem in DataGrid1.Items)
{
if (((CheckBox)thisitem.Cells[ 0 ].Controls[ 1 ]).Checked)
{
string strloginid = DataGrid1.DataKeys[thisitem.ItemIndex].ToString();
Del (strloginid); // 删除函数
}
}
30 .当文件在不同目录下,需要获取数据库连接字符串(如果连接字符串放在Web.config,然后在Global.asax中初始化)
在Application_Start中添加以下代码:
Application[ " ConnStr " ] = this .Context.Request.PhysicalApplicationPath + ConfigurationSettings.AppSettings[ " ConnStr " ].ToString();
31 . 变量.ToString()
字符型转换 转为字符串
12345 .ToString( " n " ); // 生成 12,345.00
12345 .ToString( " C " ); // 生成 ¥12,345.00
12345 .ToString( " e " ); // 生成 1.234500e+004
12345 .ToString( " f4 " ); // 生成 12345.0000
12345 .ToString( " x " ); // 生成 3039 (16进制)
12345 .ToString( " p " ); // 生成 1,234,500.00%
32 、变量.Substring(参数1,参数2);
截取字串的一部分,参数1为左起始位数,参数2为截取几位。
如: string s1 = str.Substring( 0 , 2 );
34 .在自己的网站上登陆其他网站:(如果你的页面是通过嵌套方式的话,因为一个页面只能有一个FORM,这时可以导向另外一个页面再提交登陆信息)
<SCRIPT language = " javascript " >
< !--
function gook(pws)
{
frm.submit();
}
// -->
< / SCRIPT> <body leftMargin = " 0 " topMargin = " 0 " onload = " javascript:gook() " marginwidth = " 0 " marginheight = " 0 " >
<form name = " frm " action = " http://220.194.55.68:6080/login.php?retid=7259 " method = " post " >
<tr>
<td>
<input id = " f_user " type = " hidden " size = " 1 " name = " f_user " runat = " server " >
<input id = " f_domain " type = " hidden " size = " 1 " name = " f_domain " runat = " server " >
<input class = " box " id = " f_pass " type = " hidden " size = " 1 " name = " pwshow " runat = " server " >
<INPUT id = " lng " type = " hidden " maxLength = " 20 " size = " 1 " value = " 5 " name = " lng " >
<INPUT id = " tem " type = " hidden " size = " 1 " value = " 2 " name = " tem " >
< / td>
< / tr>
< / form>
文本框的名称必须是你要登陆的网页上的名称,如果源码不行可以用vsniffer 看看。
下面是获取用户输入的登陆信息的代码:
string name;
name = Request.QueryString[ " EmailName " ];
try
{
int a = name.IndexOf( " @ " , 0 ,name.Length);
f_user.Value = name.Substring( 0 ,a);
f_domain.Value = name.Substring(a + 1 ,name.Length - (a + 1 ));
f_pass.Value = Request.QueryString[ " Psw " ];
}
catch
{
Script.Alert( " 错误的邮箱! " );
Server.Transfer( " index.aspx " );
}
35 .警告窗口
/**/ /// <summary>
/// 服务器端弹出alert对话框
/// </summary>
/// <param name="str_Message"> 提示信息,例子:"不能为空!" </param>
/// <param name="page"> Page类 </param>
public void Alert( string str_Message,Page page)
{
page.RegisterStartupScript( "" , " <script>alert(' " + str_Message + " ');</script> " );
}
36 .重载此警告窗口,使某控件获得焦点
/**/ /// <summary>
/// 服务器端弹出alert对话框,并使控件获得焦点
/// </summary>
/// <param name="str_Ctl_Name"> 获得焦点控件Id值,比如:txt_Name </param>
/// <param name="str_Message"> 提示信息,例子:"请输入您姓名!" </param>
/// <param name="page"> Page类 </param>
public void Alert( string str_Ctl_Name, string str_Message,Page page)
{
page.RegisterStartupScript( "" , " <script>alert(' " + str_Message + " ');document.forms(0). " + str_Ctl_Name + " .focus(); document.forms(0). " + str_Ctl_Name + " .select();</script> " );
}
37 .确认对话框
/**/ /// <summary>
/// 服务器端弹出confirm对话框
/// </summary>
/// <param name="str_Message"> 提示信息,例子:"您是否确认删除!" </param>
/// <param name="btn"> 隐藏Botton按钮Id值,比如:btn_Flow </param>
/// <param name="page"> Page类 </param>
public void Confirm( string str_Message, string btn,Page page)
{
page.RegisterStartupScript( "" , " <script> if (confirm(' " + str_Message + " ')==true){document.forms(0). " + btn + " .click();}</script> " );
}
38 .重载确认对话框,点击确定触发一个隐藏按钮事件,点击取消触发一个隐藏按钮事件
/**/ /// <summary>
/// 服务器端弹出confirm对话框,询问用户准备转向那些操作,包括“确定”和“取消”时的操作
/// </summary>
/// <param name="str_Message"> 提示信息,比如:"成功增加数据,单击"确定"按钮填写流程,单击"取消"修改数据" </param>
/// <param name="btn_Redirect_Flow"> "确定"按钮id值 </param>
/// <param name="btn_Redirect_Self"> "取消"按钮id值 </param>
/// <param name="page"> Page类 </param>
public void Confirm( string str_Message, string btn_Redirect_Flow, string btn_Redirect_Self,Page page)
{
page.RegisterStartupScript( "" , " <script> if (confirm(' " + str_Message + " ')==true){document.forms(0). " + btn_Redirect_Flow + " .click();}else{document.forms(0). " + btn_Redirect_Self + " .click();}</script> " );
}
39 .获得焦点
/**/ /// <summary>
/// 使控件获得焦点
/// </summary>
/// <param name="str_Ctl_Name"> 获得焦点控件Id值,比如:txt_Name </param>
/// <param name="page"> Page类 </param>
public void GetFocus( string str_Ctl_Name,Page page)
{
page.RegisterStartupScript( "" , " <script>document.forms(0). " + str_Ctl_Name + " .focus(); document.forms(0). " + str_Ctl_Name + " .select();</script> " );
}
40 .子窗体返回主窗体
/**/ /// <summary>
/// 名称:redirect
/// 功能:子窗体返回主窗体
/// 参数:url
/// 返回值:空
/// </summary>
public void redirect( string url,Page page)
{
if ( Session[ " IfDefault " ] != ( object ) " Default " )
{
page.RegisterStartupScript( "" , " <script>window.top.document.location.href=' " + url + " ';</script> " );
}
}
41 .判断是否为数字
/**/ /// <summary>
/// 名称:IsNumberic
/// 功能:判断输入的是否是数字
/// 参数:string oText:源文本
/// 返回值: bool true:是 false:否
/// </summary>
public bool IsNumberic( string oText)
{
try
{
int var1 = Convert.ToInt32 (oText);
return true ;
}
catch
{
return false ;
}
}
获得字符串实际长度(包括中文字符)
// 获得字符串oString的实际长度
public int StringLength( string oString)
{
byte [] strArray = System.Text .Encoding.Default .GetBytes (oString);
int res = strArray.Length ;
return res;
}
42 .将回车转换为TAB
// 当在有keydown事件的控件上敲回车时,变为tab
public void Tab(System.Web .UI.WebControls .WebControl webcontrol)
{
webcontrol.Attributes .Add ( " onkeydown " , " if(event.keyCode==13) event.keyCode=9 " );
}
43 .datagrid分页中如果删除时出现超出索引
public void jumppage(System.Web.UI.WebControls.DataGrid dg)
{
int int_PageLess; // 定义页面跳转的页数
// 如果当前页是最后一页
if (dg.CurrentPageIndex == dg.PageCount - 1 )
{
// 如果就只有一页
if (dg.CurrentPageIndex == 0 )
{
// 删除后页面停在当前页
dg.CurrentPageIndex = dg.PageCount - 1 ;
}
else
{
// 如果最后一页只有一条记录
if ((dg.Items.Count % dg.PageSize == 1 ) || dg.PageSize == 1 )
{
// 把最后一页最后一条记录删除后,页面应跳转到前一页
int_PageLess = 2 ;
}
else // 如果最后一页的记录数大于1,那么在最后一页删除记录后仍然停在当前页
{
int_PageLess = 1 ;
}
dg.CurrentPageIndex = dg.PageCount - int_PageLess;
}
}
}
传送参数:
response.write( " <script>window.open('*.aspx?id= " + this .DropDownList1.SelectIndex + " &id1= " + ... + " ')</script> " )
接收参数:
string a = Request.QueryString( " id " );
string b = Request.QueryString( " id1 " );
2 .为按钮添加对话框
Button1.Attributes.Add( " onclick " , " return confirm('确认?') " );
button.attributes.add( " onclick " , " if(confirm('are you sure...?')){return true;}else{return false;} " )
3 .删除表格选定记录
int intEmpID = ( int )MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = " DELETE from Employee where emp_id = " + intEmpID.ToString()
4 .删除表格记录警告
private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e)
{
switch (e.Item.ItemType)
{
case ListItemType.Item :
case ListItemType.AlternatingItem :
case ListItemType.EditItem:
TableCell myTableCell;
myTableCell = e.Item.Cells[ 14 ];
LinkButton myDeleteButton ;
myDeleteButton = (LinkButton)myTableCell.Controls[ 0 ];
myDeleteButton.Attributes.Add( " onclick " , " return confirm('您是否确定要删除这条信息'); " );
break ;
default :
break ;
}
}
5 .点击表格行链接另一页
private void grdCustomer_ItemDataBound( object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
// 点击表格打开
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
e.Item.Attributes.Add( " onclick " , " window.open('Default.aspx?id= " + e.Item.Cells[ 0 ].Text + " '); " );
}
双击表格连接到另一页
在itemDataBind事件中
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
...
e.item.Attributes.Add( " ondblclick " , " location.href='../ShippedGrid.aspx?id= " + OrderItemID + " ' " );
}
双击表格打开新一页
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
string OrderItemID = e.item.cells[ 1 ].Text;
...
e.item.Attributes.Add( " ondblclick " , " open('../ShippedGrid.aspx?id= " + OrderItemID + " ') " );
}
★特别注意:【 ? id = 】 处不能为 【 ? id = 】
6 .表格超连接列传递参数
< asp:HyperLinkColumn Target = " _blank " headertext = " ID号 " DataTextField = " id " NavigateUrl = " aaa.aspx?id='<%# DataBinder.Eval(Container.DataItem, " 数据字段1 " )%>' & name='<%# DataBinder.Eval(Container.DataItem, " 数据字段2 " )%>' />
7 .表格点击改变颜色
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onclick " , " this.style.backgroundColor='#99cc00';this.style.color='buttontext';this.style.cursor='default'; " );
}
写在DataGrid的_ItemDataBound里
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add( " onmouseover " , " this.style.backgroundColor='#99cc00';this.style.color='buttontext';this.style.cursor='default'; " );
e.Item.Attributes.Add( " onmouseout " , " this.style.backgroundColor='';this.style.color=''; " );
}
8 .关于日期格式
日期格式设定
DataFormatString = " {0:yyyy-MM-dd} "
我觉得应该在itembound事件中
e.items.cell[ " 你的列 " ].text = DateTime.Parse(e.items.cell[ " 你的列 " ].text.ToString( " yyyy-MM-dd " ))
9 .获取错误信息并到指定页面
不要使用Response.Redirect,而应该使用Server.Transfer
e.g
// in global.asax
protected void Application_Error(Object sender, EventArgs e) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer( " MyErrorPage.aspx " );
// 其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :)
}
Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理
10 .清空Cookie
Cookie.Expires = [DateTime];
Response.Cookies( " UserName " ).Expires = 0
11 .自定义异常处理
// 自定义异常处理类
using System;
using System.Diagnostics;
namespace MyAppException
{
/// <summary>
/// 从系统异常类ApplicationException继承的应用程序异常处理类。
/// 自动将异常内容记录到Windows NT/2000的应用程序日志
/// </summary>
public class AppException:System.ApplicationException
{
public AppException()
{
if (ApplicationConfiguration.EventLogEnabled)
LogEvent( " 出现一个未知错误。 " );
}
public AppException( string message)
{
LogEvent(message);
}
public AppException( string message,Exception innerException)
{
LogEvent(message);
if (innerException != null )
{
LogEvent(innerException.Message);
}
}
// 日志记录类
using System;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
namespace MyEventLog
{
/// <summary>
/// 事件日志记录类,提供事件日志记录支持
/// <remarks>
/// 定义了4个日志记录方法 (error, warning, info, trace)
/// </remarks>
/// </summary>
public class ApplicationLog
{
/// <summary>
/// 将错误信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteError(String message)
{
WriteLog(TraceLevel.Error, message);
}
/// <summary>
/// 将警告信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteWarning(String message)
{
WriteLog(TraceLevel.Warning, message);
}
/// <summary>
/// 将提示信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteInfo(String message)
{
WriteLog(TraceLevel.Info, message);
}
/// <summary>
/// 将跟踪信息记录到Win2000/NT事件日志中
/// <param name="message"> 需要记录的文本信息 </param>
/// </summary>
public static void WriteTrace(String message)
{
WriteLog(TraceLevel.Verbose, message);
}
/// <summary>
/// 格式化记录到事件日志的文本信息格式
/// <param name="ex"> 需要格式化的异常对象 </param>
/// <param name="catchInfo"> 异常信息标题字符串. </param>
/// <retvalue>
/// <para> 格式后的异常信息字符串,包括异常内容和跟踪堆栈. </para>
/// </retvalue>
/// </summary>
public static String FormatException(Exception ex, String catchInfo)
{
StringBuilder strBuilder = new StringBuilder();
if (catchInfo != String.Empty)
{
strBuilder.Append(catchInfo).Append( " " );
}
strBuilder.Append(ex.Message).Append( " " ).Append(ex.StackTrace);
return strBuilder.ToString();
}
/// <summary>
/// 实际事件日志写入方法
/// <param name="level"> 要记录信息的级别(error,warning,info,trace). </param>
/// <param name="messageText"> 要记录的文本. </param>
/// </summary>
private static void WriteLog(TraceLevel level, String messageText)
{
try
{
EventLogEntryType LogEntryType;
switch (level)
{
case TraceLevel.Error:
LogEntryType = EventLogEntryType.Error;
break ;
case TraceLevel.Warning:
LogEntryType = EventLogEntryType.Warning;
break ;
case TraceLevel.Info:
LogEntryType = EventLogEntryType.Information;
break ;
case TraceLevel.Verbose:
LogEntryType = EventLogEntryType.SuccessAudit;
break ;
default :
LogEntryType = EventLogEntryType.SuccessAudit;
break ;
}
EventLog eventLog = new EventLog( " Application " , ApplicationConfiguration.EventLogMachineName, ApplicationConfiguration.EventLogSourceName );
// 写入事件日志
eventLog.WriteEntry(messageText, LogEntryType);
}
catch {} // 忽略任何异常
}
} // class ApplicationLog
}
12 .Panel 横向滚动,纵向自动扩展
< asp:panel style = " overflow-x:scroll;overflow-y:auto; " ></ asp:panel >
13 .回车转换成Tab
< script language = " javascript " for = " document " event = " onkeydown " >
if ( event .keyCode == 13 && event .srcElement.type != ' button ' && event .srcElement.type != ' submit ' && event .srcElement.type != ' reset ' && event .srcElement.type != '' && event .srcElement.type != ' textarea ' );
event .keyCode = 9 ;
</ script >
onkeydown = " if(event.keyCode==13) event.keyCode=9 "
http: // dotnet.aspx.cc/exam/enter2tab.aspx
14 .DataGrid超级连接列
DataNavigateUrlField = " 字段名 " DataNavigateUrlFormatString = " http://xx/inc/delete.aspx?ID={0} "
15 .DataGrid行随鼠标变色
private void DGzf_ItemDataBound( object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if (e.Item.ItemType != ListItemType.Header)
{
e.Item.Attributes.Add( " onmouseout " , " this.style.backgroundColor=" " + e.Item.Style[ " BACKGROUND-COLOR " ] + " " " );
e.Item.Attributes.Add( " onmouseover " , " this.style.backgroundColor=" " + " #EFF3F7 " + " " " );
}
}
16 .模板列
< ASP:TEMPLATECOLUMN visible = " False " sortexpression = " demo " headertext = " ID " >
< ITEMTEMPLATE >
< ASP:LABEL text = ' <%# DataBinder.Eval(Container.DataItem, "ArticleID")%> ' runat = " server " width = " 80% " id = " lblColumn " />
</ ITEMTEMPLATE >
</ ASP:TEMPLATECOLUMN >
< ASP:TEMPLATECOLUMN headertext = " 选中 " >
< HEADERSTYLE wrap = " False " horizontalalign = " Center " ></ HEADERSTYLE >
< ITEMTEMPLATE >
< ASP:CHECKBOX id = " chkExport " runat = " server " />
</ ITEMTEMPLATE >
< EDITITEMTEMPLATE >
< ASP:CHECKBOX id = " chkExportON " runat = " server " enabled = " true " />
</ EDITITEMTEMPLATE >
</ ASP:TEMPLATECOLUMN >
后台代码
protected void CheckAll_CheckedChanged( object sender, System.EventArgs e)
{
// 改变列的选定,实现全选或全不选。
CheckBox chkExport ;
if ( CheckAll.Checked)
{
foreach (DataGridItem oDataGridItem in MyDataGrid.Items)
{
chkExport = (CheckBox)oDataGridItem.FindControl( " chkExport " );
chkExport.Checked = true ;
}
}
else
{
foreach (DataGridItem oDataGridItem in MyDataGrid.Items)
{
chkExport = (CheckBox)oDataGridItem.FindControl( " chkExport " );
chkExport.Checked = false ;
}
}
}
17 .数字格式化
【 <% #Container.DataItem( " price " ) %> 的结果是500. 0000 ,怎样格式化为500. 00 ? 】
<% #Container.DataItem( " price " , " {0:¥#,##0.00} " ) %>
int i = 123456 ;
string s = i.ToString( " ###,###.00 " );
18 .日期格式化
【aspx页面内: <% # DataBinder.Eval(Container.DataItem, " Company_Ureg_Date " ) %>
显示为: 2004 - 8 - 11 19 : 44 : 28
我只想要: 2004 - 8 - 11 】
<% # DataBinder.Eval(Container.DataItem, " Company_Ureg_Date " , " {0:yyyy-M-d} " ) %>
应该如何改?
【格式化日期】
取出来,一般是object
((DateTime)objectFromDB).ToString( " yyyy-MM-dd " );
【日期的验证表达式】
A.以下正确的输入格式: [ 2004 - 2 - 29 ], [ 2004 - 02 - 29 10 : 29 : 39 pm], [ 2004 / 12 / 31 ]
^ ((d{ 2 }(([ 02468 ][ 048 ]) | ([ 13579 ][ 26 ]))[ - / s] ? (((( 0 ? [ 13578 ]) | ( 1 [ 02 ]))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 3 [ 01 ]))) | ((( 0 ? [ 469 ]) | ( 11 ))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 30 ))) | ( 0 ? 2 [ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]))))) | (d{ 2 }(([ 02468 ][ 1235679 ]) | ([ 13579 ][ 01345789 ]))[ - / s] ? (((( 0 ? [ 13578 ]) | ( 1 [ 02 ]))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 3 [ 01 ]))) | ((( 0 ? [ 469 ]) | ( 11 ))[ - / s] ? (( 0 ? [ 1 - 9 ]) | ([ 1 - 2 ][ 0 - 9 ]) | ( 30 ))) | ( 0 ? 2 [ - / s] ? (( 0 ? [ 1 - 9 ]) | ( 1 [ 0 - 9 ]) | ( 2 [ 0 - 8 ]))))))(s((( 0 ? [ 1 - 9 ]) | ( 1 [ 0 - 2 ])):([ 0 - 5 ][ 0 - 9 ])((s) | (:([ 0 - 5 ][ 0 - 9 ])s))([AM | PM | am | pm]{ 2 , 2 }))) ? $
B.以下正确的输入格式:[ 0001 - 12 - 31 ], [ 9999 09 30 ], [ 2002 / 03 / 03 ]
^ d{ 4 }[ - / s] ? (((( 0 [ 13578 ]) | ( 1 [ 02 ]))[ - / s] ? (([ 0 - 2 ][ 0 - 9 ]) | ( 3 [ 01 ]))) | ((( 0 [ 469 ]) | ( 11 ))[ - / s] ? (([ 0 - 2 ][ 0 - 9 ]) | ( 30 ))) | ( 02 [ - / s] ? [ 0 - 2 ][ 0 - 9 ]))$
【大小写转换】
HttpUtility.HtmlEncode( string );
HttpUtility.HtmlDecode( string )
19 .如何设定全局变量
Global.asax中
Application_Start()事件中
添加Application[属性名] = xxx;
就是你的全局变量
20 .怎样作到HyperLinkColumn生成的连接后,点击连接,打开新窗口?
HyperLinkColumn有个属性Target,将器值设置成 " _blank " 即可.(Target = " _blank " )
【ASPNETMENU】点击菜单项弹出新窗口
在你的menuData.xml文件的菜单项中加入URLTarget = " _blank "
如:
<? xml version = " 1.0 " encoding = " GB2312 " ?>
< MenuData ImagesBaseURL = " images/ " >
< MenuGroup >
< MenuItem Label = " 内参信息 " URL = " Infomation.aspx " >
< MenuGroup ID = " BBC " >
< MenuItem Label = " 公告信息 " URL = " Infomation.aspx " URLTarget = " _blank " LeftIcon = " file.gif " />
< MenuItem Label = " 编制信息简报 " URL = " NewInfo.aspx " LeftIcon = " file.gif " />
......
最好将你的aspnetmenu升级到1.2版
21 .委托讨论
http: // community.youkuaiyun.com/Expert/topic/2651/2651579.xml?temp=.7183191
http: // dev.youkuaiyun.com/develop/article/22/22951.shtm
22 .读取DataGrid控件TextBox值
foreach (DataGrid dgi in yourDataGrid.Items)
{
TextBox tb = (TextBox)dgi.FindControl( " yourTextBoxId " );
tb.Text....
}
23 .在DataGrid中有3个模板列包含Textbox分别为 DG_ShuLiang (数量) DG_DanJian(单价) DG_JinE(金额)分别在5. 6 .7列,要求在录入数量及单价的时候自动算出金额即:数量 * 单价 = 金额还要求录入时限制为 数值型.我如何用客户端脚本实现这个功能 ?
〖思归〗
< asp:TemplateColumn HeaderText = " 数量 " >
< ItemTemplate >
< asp:TextBox id = " ShuLiang " runat = ' server ' Text = ' <%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%> '
onkeyup = " javascript:DoCal() "
/>
< asp:RegularExpressionValidator id = " revS " runat = " server " ControlToValidate = " ShuLiang " ErrorMessage = " must be integer " ValidationExpression = " ^d+$ " />
</ ItemTemplate >
</ asp:TemplateColumn >
< asp:TemplateColumn HeaderText = " 单价 " >
< ItemTemplate >
< asp:TextBox id = " DanJian " runat = ' server ' Text = ' <%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%> '
onkeyup = " javascript:DoCal() "
/>
< asp:RegularExpressionValidator id = " revS2 " runat = " server " ControlToValidate = " DanJian " ErrorMessage = " must be numeric " ValidationExpression = " ^d+(.d*)?$ " />
</ ItemTemplate >
</ asp:TemplateColumn >
< asp:TemplateColumn HeaderText = " 金额 " >
< ItemTemplate >
< asp:TextBox id = " JinE " runat = ' server ' Text = ' <%# DataBinder.Eval(Container.DataItem,"DG_JinE")%> ' />
</ ItemTemplate >
</ asp:TemplateColumn >
< script language = " javascript " >
function DoCal()
{
var e = event .srcElement;
var row = e.parentNode.parentNode;
var txts = row.all.tags( " INPUT " );
if ( ! txts.length || txts.length < 3 )
return ;
var q = txts[txts.length - 3 ].value;
var p = txts[txts.length - 2 ].value;
if (isNaN(q) || isNaN(p))
return ;
q = parseInt(q);
p = parseFloat(p);
txts[txts.length - 1 ].value = (q * p).toFixed( 2 );
}
</ script >
24 .datagrid选定比较底下的行时,为什么总是刷新一下,然后就滚动到了最上面,刚才选定的行因屏幕的关系就看不到了
page_load
page.smartNavigation = true
25 .在Datagrid中修改数据,当点击编辑键时,数据出现在文本框中,怎么控制文本框的大小 ?
private void DataGrid1_ItemDataBound(obj sender,DataGridItemEventArgs e)
{
for ( int i = 0 ;i < e.Item.Cells.Count - 1 ;i ++ )
if (e.Item.ItemType == ListItemType.EditType)
{
e.Item.Cells[i].Attributes.Add( " Width " , " 80px " )
}
}
26 .对话框
private static string ScriptBegin = " <script language="JavaScript"> " ;
private static string ScriptEnd = " </script> " ;
public static void ConfirmMessageBox( string PageTarget, string Content)
{
string ConfirmContent = " var retValue=window.confirm(' " + Content + " '); " + " if(retValue){window.location=' " + PageTarget + " ';} " ;
ConfirmContent = ScriptBegin + ConfirmContent + ScriptEnd;
Page ParameterPage = (Page)System.Web.HttpContext.Current.Handler;
ParameterPage.RegisterStartupScript( " confirm " ,ConfirmContent);
// Response.Write(strScript);
}
----------------------------------------
27 . 将时间格式化: string aa = DateTime.Now.ToString( " yyyy年MM月dd日 " );
1.1 取当前年月日时分秒
currentTime = System.DateTime.Now;
1.2 取当前年
int 年 = DateTime.Now.Year;
1.3 取当前月
int 月 = DateTime.Now.Month;
1.4 取当前日
int 日 = DateTime.Now.Day;
1.5 取当前时
int 时 = DateTime.Now.Hour;
1.6 取当前分
int 分 = DateTime.Now.Minute;
1.7 取当前秒
int 秒 = DateTime.Now.Second;
1.8 取当前毫秒
int 毫秒 = DateTime.Now.Millisecond;
28 .自定义分页代码:
先定义变量 : public static int pageCount; // 总页面数
public static int curPageIndex = 1 ; // 当前页面
下一页:
if (DataGrid1.CurrentPageIndex < (DataGrid1.PageCount - 1 ))
{
DataGrid1.CurrentPageIndex += 1 ;
curPageIndex += 1 ;
}
bind(); // DataGrid1数据绑定函数
上一页:
if (DataGrid1.CurrentPageIndex > 0 )
{
DataGrid1.CurrentPageIndex += 1 ;
curPageIndex -= 1 ;
}
bind(); // DataGrid1数据绑定函数
直接页面跳转:
int a = int .Parse(JumpPage.Value.Trim()); // JumpPage.Value.Trim()为跳转值
if (a < DataGrid1.PageCount)
{
this .DataGrid1.CurrentPageIndex = a;
}
bind();
29 .DataGrid使用:
3 .1添加删除确认:
private void DataGrid1_ItemCreated( object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
foreach (DataGridItem di in this .DataGrid1.Items)
{
if (di.ItemType == ListItemType.Item || di.ItemType == ListItemType.AlternatingItem)
{
((LinkButton)di.Cells[ 8 ].Controls[ 0 ]).Attributes.Add( " onclick " , " return confirm('确认删除此项吗?'); " );
}
}
}
3 .2样式交替:
ListItemType itemType = e.Item.ItemType;
if (itemType == ListItemType.Item )
{
e.Item.Attributes[ " onmouseout " ] = " javascript:this.style.backgroundColor='#FFFFFF'; " ;
e.Item.Attributes[ " onmouseover " ] = " javascript:this.style.backgroundColor='#d9ece1';cursor='hand'; " ;
}
else if ( itemType == ListItemType.AlternatingItem)
{
e.Item.Attributes[ " onmouseout " ] = " javascript:this.style.backgroundColor='#a0d7c4'; " ;
e.Item.Attributes[ " onmouseover " ] = " javascript:this.style.backgroundColor='#d9ece1';cursor='hand'; " ;
}
3 .3添加一个编号列:
DataTable dt = c.ExecuteRtnTableForAccess(sqltxt); // 执行sql返回的DataTable
DataColumn dc = dt.Columns.Add( " number " ,System.Type.GetType( " System.String " ));
for ( int i = 0 ;i < dt.Rows.Count;i ++ )
{
dt.Rows[i][ " number " ] = (i + 1 ).ToString();
}
DataGrid1.DataSource = dt;
DataGrid1.DataBind();
3 . 4 DataGrid1中添加一个CheckBox,页面中添加一个全选框
private void CheckBox2_CheckedChanged( object sender, System.EventArgs e)
{
foreach (DataGridItem thisitem in DataGrid1.Items)
{
((CheckBox)thisitem.Cells[ 0 ].Controls[ 1 ]).Checked = CheckBox2.Checked;
}
}
将当前页面中DataGrid1显示的数据全部删除
foreach (DataGridItem thisitem in DataGrid1.Items)
{
if (((CheckBox)thisitem.Cells[ 0 ].Controls[ 1 ]).Checked)
{
string strloginid = DataGrid1.DataKeys[thisitem.ItemIndex].ToString();
Del (strloginid); // 删除函数
}
}
30 .当文件在不同目录下,需要获取数据库连接字符串(如果连接字符串放在Web.config,然后在Global.asax中初始化)
在Application_Start中添加以下代码:
Application[ " ConnStr " ] = this .Context.Request.PhysicalApplicationPath + ConfigurationSettings.AppSettings[ " ConnStr " ].ToString();
31 . 变量.ToString()
字符型转换 转为字符串
12345 .ToString( " n " ); // 生成 12,345.00
12345 .ToString( " C " ); // 生成 ¥12,345.00
12345 .ToString( " e " ); // 生成 1.234500e+004
12345 .ToString( " f4 " ); // 生成 12345.0000
12345 .ToString( " x " ); // 生成 3039 (16进制)
12345 .ToString( " p " ); // 生成 1,234,500.00%
32 、变量.Substring(参数1,参数2);
截取字串的一部分,参数1为左起始位数,参数2为截取几位。
如: string s1 = str.Substring( 0 , 2 );
34 .在自己的网站上登陆其他网站:(如果你的页面是通过嵌套方式的话,因为一个页面只能有一个FORM,这时可以导向另外一个页面再提交登陆信息)
<SCRIPT language = " javascript " >
< !--
function gook(pws)
{
frm.submit();
}
// -->
< / SCRIPT> <body leftMargin = " 0 " topMargin = " 0 " onload = " javascript:gook() " marginwidth = " 0 " marginheight = " 0 " >
<form name = " frm " action = " http://220.194.55.68:6080/login.php?retid=7259 " method = " post " >
<tr>
<td>
<input id = " f_user " type = " hidden " size = " 1 " name = " f_user " runat = " server " >
<input id = " f_domain " type = " hidden " size = " 1 " name = " f_domain " runat = " server " >
<input class = " box " id = " f_pass " type = " hidden " size = " 1 " name = " pwshow " runat = " server " >
<INPUT id = " lng " type = " hidden " maxLength = " 20 " size = " 1 " value = " 5 " name = " lng " >
<INPUT id = " tem " type = " hidden " size = " 1 " value = " 2 " name = " tem " >
< / td>
< / tr>
< / form>
文本框的名称必须是你要登陆的网页上的名称,如果源码不行可以用vsniffer 看看。
下面是获取用户输入的登陆信息的代码:
string name;
name = Request.QueryString[ " EmailName " ];
try
{
int a = name.IndexOf( " @ " , 0 ,name.Length);
f_user.Value = name.Substring( 0 ,a);
f_domain.Value = name.Substring(a + 1 ,name.Length - (a + 1 ));
f_pass.Value = Request.QueryString[ " Psw " ];
}
catch
{
Script.Alert( " 错误的邮箱! " );
Server.Transfer( " index.aspx " );
}
35 .警告窗口
/**/ /// <summary>
/// 服务器端弹出alert对话框
/// </summary>
/// <param name="str_Message"> 提示信息,例子:"不能为空!" </param>
/// <param name="page"> Page类 </param>
public void Alert( string str_Message,Page page)
{
page.RegisterStartupScript( "" , " <script>alert(' " + str_Message + " ');</script> " );
}
36 .重载此警告窗口,使某控件获得焦点
/**/ /// <summary>
/// 服务器端弹出alert对话框,并使控件获得焦点
/// </summary>
/// <param name="str_Ctl_Name"> 获得焦点控件Id值,比如:txt_Name </param>
/// <param name="str_Message"> 提示信息,例子:"请输入您姓名!" </param>
/// <param name="page"> Page类 </param>
public void Alert( string str_Ctl_Name, string str_Message,Page page)
{
page.RegisterStartupScript( "" , " <script>alert(' " + str_Message + " ');document.forms(0). " + str_Ctl_Name + " .focus(); document.forms(0). " + str_Ctl_Name + " .select();</script> " );
}
37 .确认对话框
/**/ /// <summary>
/// 服务器端弹出confirm对话框
/// </summary>
/// <param name="str_Message"> 提示信息,例子:"您是否确认删除!" </param>
/// <param name="btn"> 隐藏Botton按钮Id值,比如:btn_Flow </param>
/// <param name="page"> Page类 </param>
public void Confirm( string str_Message, string btn,Page page)
{
page.RegisterStartupScript( "" , " <script> if (confirm(' " + str_Message + " ')==true){document.forms(0). " + btn + " .click();}</script> " );
}
38 .重载确认对话框,点击确定触发一个隐藏按钮事件,点击取消触发一个隐藏按钮事件
/**/ /// <summary>
/// 服务器端弹出confirm对话框,询问用户准备转向那些操作,包括“确定”和“取消”时的操作
/// </summary>
/// <param name="str_Message"> 提示信息,比如:"成功增加数据,单击"确定"按钮填写流程,单击"取消"修改数据" </param>
/// <param name="btn_Redirect_Flow"> "确定"按钮id值 </param>
/// <param name="btn_Redirect_Self"> "取消"按钮id值 </param>
/// <param name="page"> Page类 </param>
public void Confirm( string str_Message, string btn_Redirect_Flow, string btn_Redirect_Self,Page page)
{
page.RegisterStartupScript( "" , " <script> if (confirm(' " + str_Message + " ')==true){document.forms(0). " + btn_Redirect_Flow + " .click();}else{document.forms(0). " + btn_Redirect_Self + " .click();}</script> " );
}
39 .获得焦点
/**/ /// <summary>
/// 使控件获得焦点
/// </summary>
/// <param name="str_Ctl_Name"> 获得焦点控件Id值,比如:txt_Name </param>
/// <param name="page"> Page类 </param>
public void GetFocus( string str_Ctl_Name,Page page)
{
page.RegisterStartupScript( "" , " <script>document.forms(0). " + str_Ctl_Name + " .focus(); document.forms(0). " + str_Ctl_Name + " .select();</script> " );
}
40 .子窗体返回主窗体
/**/ /// <summary>
/// 名称:redirect
/// 功能:子窗体返回主窗体
/// 参数:url
/// 返回值:空
/// </summary>
public void redirect( string url,Page page)
{
if ( Session[ " IfDefault " ] != ( object ) " Default " )
{
page.RegisterStartupScript( "" , " <script>window.top.document.location.href=' " + url + " ';</script> " );
}
}
41 .判断是否为数字
/**/ /// <summary>
/// 名称:IsNumberic
/// 功能:判断输入的是否是数字
/// 参数:string oText:源文本
/// 返回值: bool true:是 false:否
/// </summary>
public bool IsNumberic( string oText)
{
try
{
int var1 = Convert.ToInt32 (oText);
return true ;
}
catch
{
return false ;
}
}
获得字符串实际长度(包括中文字符)
// 获得字符串oString的实际长度
public int StringLength( string oString)
{
byte [] strArray = System.Text .Encoding.Default .GetBytes (oString);
int res = strArray.Length ;
return res;
}
42 .将回车转换为TAB
// 当在有keydown事件的控件上敲回车时,变为tab
public void Tab(System.Web .UI.WebControls .WebControl webcontrol)
{
webcontrol.Attributes .Add ( " onkeydown " , " if(event.keyCode==13) event.keyCode=9 " );
}
43 .datagrid分页中如果删除时出现超出索引
public void jumppage(System.Web.UI.WebControls.DataGrid dg)
{
int int_PageLess; // 定义页面跳转的页数
// 如果当前页是最后一页
if (dg.CurrentPageIndex == dg.PageCount - 1 )
{
// 如果就只有一页
if (dg.CurrentPageIndex == 0 )
{
// 删除后页面停在当前页
dg.CurrentPageIndex = dg.PageCount - 1 ;
}
else
{
// 如果最后一页只有一条记录
if ((dg.Items.Count % dg.PageSize == 1 ) || dg.PageSize == 1 )
{
// 把最后一页最后一条记录删除后,页面应跳转到前一页
int_PageLess = 2 ;
}
else // 如果最后一页的记录数大于1,那么在最后一页删除记录后仍然停在当前页
{
int_PageLess = 1 ;
}
dg.CurrentPageIndex = dg.PageCount - int_PageLess;
}
}
}