1.为按钮添加确认对话框
Button1.Attributes.Add("onclick","return confirm(’确认?’)");button.attributes.add("onclick","if(confirm(’are you sure...?’)){return true;}else{return false;}")
2.删除表格选定记录
// 获得DataGrid主键int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString();
3.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: // 编辑项 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; }}
4.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 + "’);");}
5.双击表格连接到另一页
在itemDataBound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 + "’");}
6.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 + "’)");}
7.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")%>’/>
8.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’;");}
9.在表格行中移动鼠标时改变颜色
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=’’;");}
10.关于日期格式
// 日期格式设定
DataFormatString="{0:yyyy-MM-dd}"
// 写在itembound事件中
e.items.cell["你的列"].text=DateTime.Parse(e.items.cell["你的列"].text.ToString("yyyy-MM-dd"))
11.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.asaxprotected 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 :)}
注: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。
12.清空Cookie
Cookie.Expires=[DateTime];Response.Cookies("UserName").Expires = 0;
13.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}
14.Panel横向滚动,纵向自动扩展
<asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel>
15.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"
16.DataGrid超级连接列
DataNavigateUrlField="字段名" DataNavigateUrlFormatString=http://xx/inc/delete.aspx?ID={0}
17.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( "onmouseo
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