1.//弹出对话框.点击转向指定页面 Response.Write(" <mce:script type="text/javascript"><!-- window.alert('该会员没有提交申请,请重新提交!') // --></mce:script>"); Response.Write(" <mce:script type="text/javascript"><!-- window.location ='http://www.51aspx.com/bizpulic/upmeb.aspx' // --></mce:script>"); 2.//弹出对话框 Response.Write(" <script language='javascript'>alert('产品添加成功!') </script >"); 3.//删除文件 string filename ="20059595157517.jpg"; pub.util.DeleteFile(HttpContext.Current.Server.MapPath("../file/") +filename); 4.//绑定下拉列表框datalist System.Data.DataView dv=conn.Exec_ex("select -1 as code,'请选择经营模式' as content from dealin union select code,content from dealin"); this.dealincode.DataSource=dv; this.dealincode.DataTextField="content"; this.dealincode.DataValueField="code"; this.dealincode.DataBind(); this.dealincode.Items.FindByValue(dv[0]["dealincode"].ToString ()).Selected=true; 5.//时间去秒显示 <%# System.DateTime.Parse(DataBinder.Eval (Container.DataItem,&quot;begtime&quot;).ToString()).ToShortDateString()%> 6.//标题带链接 <%# &quot; <a class=/&quot;12c/&quot; target=/&quot;_blank/&quot; href=/&quot;http://www.51aspx/CV/_&quot;+DataBinder.Eval (Container.DataItem,&quot;procode&quot;)+&quot;.html/&quot;>&quot;+ DataBinder.Eval(Container.DataItem,&quot;proname&quot;)+&quot; </a>&quot;%> 7.//修改转向 <%# &quot; <A href="/&quot;editpushpro.aspx?id=&quot;+DataBinder.Eval" mce_href="/&quot;editpushpro.aspx?id=&quot;+DataBinder.Eval" (Container.DataItem,&quot;code&quot;)+&quot;/&quot;>&quot;+&quot;修改 &quot;+&quot; </A>&quot;%> 8.//弹出确定按钮 <%# &quot; <A id=/&quot;btnDelete/&quot; onclick=/&quot;return confirm('你是否 确定删除这条记录吗?');/&quot; href="/&quot;pushproduct.aspx?" mce_href="/&quot;pushproduct.aspx" dl=&quot;+DataBinder.Eval(Container.DataItem,&quot;code&quot;) +&quot;/&quot;>&quot;+&quot;删除&quot;+&quot; </A>&quot;%> 9.//输出数据格式化 "{0:F2}" 是格式 F2表示小数点后剩两位 <%# DataBinder.Eval(Container, &quot;DataItem.PriceMoney&quot;,&quot;{0:F2} &quot;) %> 10.//提取动态网页内容 Uri uri = new Uri("http://www.51aspx.com/"); WebRequest req = WebRequest.Create(uri); WebResponse resp = req.GetResponse(); Stream str = resp.GetResponseStream(); StreamReader sr = new StreamReader(str,System.Text.Encoding.Default); string t = sr.ReadToEnd(); this.Response.Write(t.ToString()); 11.//获取" . "后面的字符 i.ToString().Trim().Substring(i.ToString().Trim().LastIndexOf(".") +1).ToLower().Trim() 12. 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"); 12.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;}") 13.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() 14.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;   } } 15.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 + "’)"); } 16.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")%>’ / > 17.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=’’;"); } 18.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")) 19.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 20.清空Cookie Cookie.Expires=[DateTime]; Response.Cookies("UserName").Expires = 0 21.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 } 22.Panel 横向滚动,纵向自动扩展 <asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel> 23.回车转换成Tab (1) <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> (2) //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"); } 24.DataGrid超级连接列 DataNavigateUrlField="字段名" DataNavigateUrlFormatString="http://xx/inc/delete.aspx?ID={0}" 25.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"+"/"");   } } 26.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" horiz></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;   }   } } 27.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"); 28.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) 29.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 30.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 31.读取DataGrid控件TextBox值 foreach(DataGrid dgi in yourDataGrid.Items) {   TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");   tb.Text.... } 33.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? <asp:TemplateColumn HeaderText="数量"> <ItemTemplate> <asp:TextBox id="ShuLiang" runat=’server’ Text=’<%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%>’ /> <asp:RegularExpressionValidator id="revS" runat="server" C ErrorMessage="must be integer" Validati /> </ItemTemplate> </asp:TemplateColumn> <asp:TemplateColumn HeaderText="单价"> <ItemTemplate> <asp:TextBox id="DanJian" runat=’server’ Text=’<%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%>’ /> <asp:RegularExpressionValidator id="revS2" runat="server" C ErrorMessage="must be numeric" Validati /> </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> 34.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 35.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.Attributes.Add("Width", "80px")   } } 36.对话框 private static string ScriptBegin = "<script language=/"JavaScript/">"; private static string ScriptEnd = "</script>"; public static void ConfirmMessageBox(string PageTarget,string Content) {   string C+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); } 37. 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;