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 + "’)");

}


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("\r\n");

    }

    strBuilder.Append(ex.Message).Append("\r\n").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"


  

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");


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