ASP.NET 程序中常用代码

string a = Request.QueryString("id");
string b = Request.QueryString("id1");

Button1.Attributes.Add("onclick","return confirm('确认?')");
button.attributes.add("onclick","if(confirm('are you sure...?')){return true;}else{return false;}")

int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString()

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;
　}
}

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 + "')");
}

<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")%>' />

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='';");
}

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")) 

　　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 :)
} 　<span style="font-family: Georgia; line-height: 19px; white-space: normal;">　</span>

Cookie.Expires=[DateTime]; Response.Cookies("UserName").Expires = 0 　

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);
}
}
}
}

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>