strReturn ="";
strTemp="0123456789";if ( NUM.Length== 0)return strReturn;for (i=0;i<NUM.Length;i++){ j=strTemp.IndexOf(NUM[i]); if (j>=0){ //说明有字符不是数字strReturn+=NUM[i];}}//说明是数字return strReturn;} public string isNumeric1(string NUM){ string strReturn;int i;strReturn ="";
if ( NUM.Length== 0)return strReturn;for (i=0;i<NUM.Length;i++){ if (char.IsDigit(NUM,i)){ //说明有字符不是数字strReturn+=NUM[i];}}//说明是数字return strReturn;}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 + "')");}★特别注意：【?id=】 处不能为 【?id =】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.Transfere.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 :)
}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 = 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>οnkeydοwn="if(event.keyCode==13) event.keyCode=9"
http://dotnet.aspx.cc/exam/enter2tab.aspx
14.DataGrid超级连接列DataNavigateUrlField="字段名" DataNavigateUrlFormatString="{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");18.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)19.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
20.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21.委托讨论
http://community.csdn.net/Expert/topic/2651/2651579.xml?temp=.7183191http://dev.csdn.net/develop/article/22/22951.shtm22.读取DataGrid控件TextBox值
foreach(DataGrid dgi in yourDataGrid.Items)
{ TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId"); tb.Text....}23.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?
〖思归〗
<asp:TemplateColumn HeaderText="数量"> <ItemTemplate> <asp:TextBox id="ShuLiang" runat='server' Text='<%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%>' οnkeyup="javascript:DoCal()" /><asp:RegularExpressionValidator id="revS" runat="server" ControlToValidate="ShuLiang" ErrorMessage="must be integer" ValidationExpression="^\d+$" />
</ItemTemplate> </asp:TemplateColumn><asp:TemplateColumn HeaderText="单价">
<ItemTemplate> <asp:TextBox id="DanJian" runat='server' Text='<%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%>' οnkeyup="javascript:DoCal()" /><asp:RegularExpressionValidator id="revS2" runat="server" ControlToValidate="DanJian" ErrorMessage="must be numeric" ValidationExpression="^\d+(\.\d*)?$" />
</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> 24.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=true25.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[i].Attributes.Add("Width", "80px")}
} 26.对话框private static string ScriptBegin = "<script language=\"javascript\">";private static string ScriptEnd = "</script>";public static void ConfirmMessageBox(string PageTarget,string Content)
{string ConfirmContent="var retvalue=window.confirm('"+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); }