ASP.NET程序中常用代码汇总

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：stringa=Request.QueryString(id);stringb=Request.QueryString(id1);2.为按钮添加对话框Button1.Attributes.Add(onclick,returnconfirm(’确认?’));button.attributes.add(onclick,if(confirm(’areyousure?’)){returntrue;}else{returnfalse;})3.删除表格选定记录intintEmpID=(int)MyDataGrid.DataKeys[e.Item.ItemIndex];stringdeleteCmd=DELETEfromEmployeewhereemp_id=+intEmpID.ToString()4.删除表格记录警告privatevoidDataGrid_ItemCreated(Objectsender,DataGridItemEventArgse){switch(e.Item.ItemType){caseListItemType.Item:caseListItemType.AlternatingItem:caseListItemType.EditItem:TableCellmyTableCell;myTableCell=e.Item.Cells[14];LinkButtonmyDeleteButton;myDeleteButton=(LinkButton)myTableCell.Controls[0];myDeleteButton.Attributes.Add(onclick,returnconfirm(’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privatevoidgrdCustomer_ItemDataBound(objectsender,System.Web.UI.WebControls.DataGridItemEventArgse){//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){stringOrderItemID=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){stringOrderItemID=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:HyperLinkColumnTarget=_blankheadertext=ID号DataTextField=idNavigateUrl=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.Transfere.g//inglobal.asaxprotectedvoidApplication_Error(Objectsender,EventArgse){if(Server.GetLastError()isHttpUnhandledException)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CookieCookie.Expires=[DateTime];Response.Cookies(UserName).Expires=011.自定义异常处理//自定义异常处理类usingSystem;usingSystem.Diagnostics;namespaceMyAppException{///＜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WindowsNT/2000的应用程序日志///＜/summary＞publicclassAppException:System.ApplicationException{publicAppException(){if(ApplicationConfiguration.EventLogEnabled)LogEvent(出现一个未知错误。);}publicAppException(stringmessage){LogEvent(message);}publicAppException(stringmessage,ExceptioninnerException){LogEvent(message);if(innerException!=null){LogEvent(innerException.Message);}}//日志记录类usingSystem;usingSystem.Configuration;usingSystem.Diagnostics;usingSystem.IO;usingSystem.Text;usingSystem.Threading;namespaceMyEventLog{///＜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＞publicclassApplicationLog{///＜summary＞///将错误信息记录到Win2000/NT事件日志中///＜paramname=message＞需要记录的文本信息＜/param＞///＜/summary＞publicstaticvoidWriteError(Stringmessage){WriteLog(TraceLevel.Error,message);}///＜summary＞///将警告信息记录到Win2000/NT事件日志中///＜paramname=message＞需要记录的文本信息＜/param＞///＜/summary＞publicstaticvoidWriteWarning(Stringmessage){WriteLog(TraceLevel.Warning,message);}///＜summary＞///将提示信息记录到Win2000/NT事件日志中///＜paramname=message＞需要记录的文本信息＜/param＞///＜/summary＞publicstaticvoidWriteInfo(Stringmessage){WriteLog(TraceLevel.Info,message);}///＜summary＞///将跟踪信息记录到Win2000/NT事件日志中///＜paramname=message＞需要记录的文本信息＜/param＞///＜/summary＞publicstaticvoidWriteTrace(Stringmessage){WriteLog(TraceLevel.Verbose,message);}///＜summary＞///格式化记录到事件日志的文本信息格式///＜paramname=ex＞需要格式化的异常对象＜/param＞///＜paramname=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＞publicstaticStringFormatException(Exceptionex,StringcatchInfo){StringBuilderstrBuilder=newStringBuilder();if(catchInfo!=String.Empty){strBuilder.Append(catchInfo).Append(\r\n);}strBuilder.Append(ex.Message).Append(\r\n).Append(ex.StackTrace);returnstrBuilder.ToString();}///＜summary＞///实际事件日志写入方法///＜paramname=level＞要记录信息的级别（error,warning,info,trace).＜/param＞///＜paramname=messa