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
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.InfLogEntryType = 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>
onkeydown="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="http://xx/inc/delete.aspx?ID={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.shtm
22.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")%>' onkeyup="javascript：DoCal()"/>
<asp:RegularExpressionValidator id="revS" runat="server" ControlToValidate="ShuLiang" ErrorMessage="must be integer" ValidationExpression="^/d+$" /></ItemTemplate></asp:TemplateColumn>
<asp:TemplateColumn HeaderText="单价"> <ItemTemplate><asp:TextBox id="DanJian" runat='server' Text='<%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%>' onkeyup="javascript：DoCal()"/>
<asp:RegularExpressionValidator id="revS2" runat="server" ControlToValidate="DanJian" ErrorMessage="must be numeric" ValidationExpression="^/d+(/./d*)?$" />
</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=true
25.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);}
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