目录
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 + "')");}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"); x;" />//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Cookie []Cookie.Expires=[DateTime];Response.Cookies("UserName").Expires = 011.自定义异常处理 []
1 //自定义异常处理类 2 using System; 3 using System.Diagnostics; 4 namespace MyAppException 5 { 6 /// <summary> 7 /// 从系统异常类ApplicationException继承的应用程序异常处理类。 8 /// 自动将异常内容记录到Windows NT/2000的应用程序日志 9 /// </summary> 10 public class AppException:System.ApplicationException 11 { 12 public AppException() 13 { 14 if (ApplicationConfiguration.EventLogEnabled)LogEvent("出现一个未知错误。"); 15 } 16 public AppException(string message) 17 { 18 LogEvent(message); 19 } 20 public AppException(string message,Exception innerException) 21 { 22 LogEvent(message); 23 if (innerException != null) 24 { 25 LogEvent(innerException.Message); 26 } 27 } 28 //日志记录类 29 using System; 30 using System.Configuration; 31 using System.Diagnostics; 32 using System.IO; 33 using System.Text; 34 using System.Threading; 35 namespace MyEventLog 36 { 37 /// <summary> 38 /// 事件日志记录类,提供事件日志记录支持 39 /// <remarks> 40 /// 定义了4个日志记录方法 (error, warning, info, trace) 41 /// </remarks> 42 /// </summary> 43 public class ApplicationLog 44 { 45 /// <summary> 46 /// 将错误信息记录到Win2000/NT事件日志中 47 /// <param name="message">需要记录的文本信息</param> 48 /// </summary> 49 public static void WriteError(String message) 50 { 51 WriteLog(TraceLevel.Error, message); 52 } 53 /// <summary> 54 /// 将警告信息记录到Win2000/NT事件日志中 55 /// <param name="message">需要记录的文本信息</param> 56 /// </summary> 57 public static void WriteWarning(String message) 58 { 59 WriteLog(TraceLevel.Warning, message); 60 } 61 /// <summary> 62 /// 将提示信息记录到Win2000/NT事件日志中 63 /// <param name="message">需要记录的文本信息</param> 64 /// </summary> 65 public static void WriteInfo(String message) 66 { 67 WriteLog(TraceLevel.Info, message); 68 } 69 /// <summary> 70 /// 将跟踪信息记录到Win2000/NT事件日志中 71 /// <param name="message">需要记录的文本信息</param> 72 /// </summary> 73 public static void WriteTrace(String message) 74 { 75 WriteLog(TraceLevel.Verbose, message); 76 } 77 /// <summary> 78 /// 格式化记录到事件日志的文本信息格式 79 /// <param name="ex">需要格式化的异常对象</param> 80 /// <param name="catchInfo">异常信息标题字符串.</param> 81 /// <retvalue> 82 /// <para>格式后的异常信息字符串,包括异常内容和跟踪堆栈.</para> 83 /// </retvalue> 84 /// </summary> 85 public static String FormatException(Exception ex, String catchInfo) 86 { 87 StringBuilder strBuilder = new StringBuilder(); 88 if (catchInfo != String.Empty) 89 { 90 strBuilder.Append(catchInfo).Append("\r\n"); 91 } 92 strBuilder.Append(ex.Message).Append("\r\n").Append(ex.StackTrace); 93 return strBuilder.ToString(); 94 } 95 /// <summary> 96 /// 实际事件日志写入方法 97 /// <param name="level">要记录信息的级别(error,warning,info,trace).</param> 98 /// <param name="messageText">要记录的文本.</param> 99 /// </summary> 100 private static void WriteLog(TraceLevel level, String messageText) 101 { 102 try 103 { 104 EventLogEntryType LogEntryType; 105 switch (level) 106 { 107 case TraceLevel.Error: 108 LogEntryType = EventLogEntryType.Error; 109 break; 110 case TraceLevel.Warning: 111 LogEntryType = EventLogEntryType.Warning; 112 break; 113 case TraceLevel.Info: 114 LogEntryType = EventLogEntryType.Information; 115 break; 116 case TraceLevel.Verbose: 117 LogEntryType = EventLogEntryType.SuccessAudit; 118 break; 119 default: 120 LogEntryType = EventLogEntryType.SuccessAudit; 121 break; 122 } 123 EventLog eventLog = new EventLog("Application", ApplicationConfiguration.EventLogMachineName, ApplicationConfiguration.EventLogSourceName ); 124 //写入事件日志 125 eventLog.WriteEntry(messageText, LogEntryType); 126 } 127 catch {} //忽略任何异常 128 } 129 } //class ApplicationLog 130 }
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"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))([AMPMampm]{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.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_loadpage.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);}27. 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;28.自定义分页代码: []先定义变量 :public static int pageCount; //总页面数public static int curPageIndex=1; //当前页面下一页:if(DataGrid1.CurrentPageIndex < (DataGrid1.PageCount - 1)){ DataGrid1.CurrentPageIndex += 1; curPageIndex+=1;}bind(); // DataGrid1数据绑定函数上一页:if(DataGrid1.CurrentPageIndex >0){ DataGrid1.CurrentPageIndex += 1; curPageIndex-=1;}bind(); // DataGrid1数据绑定函数直接页面跳转:int a=int.Parse(JumpPage.Value.Trim());//JumpPage.Value.Trim()为跳转值if(a<DataGrid1.PageCount){ this.DataGrid1.CurrentPageIndex=a;}bind(); 29.DataGrid使用: []添加删除确认:private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e){ foreach(DataGridItem di in this.DataGrid1.Items) { if(di.ItemType==ListItemType.Itemdi.ItemType==ListItemType.AlternatingItem){ ((LinkButton)di.Cells[8].Controls[0]).Attributes.Add("onclick","return confirm('确认删除此项吗?');");} }}样式交替:ListItemType itemType = e.Item.ItemType;if (itemType == ListItemType.Item ){ e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor='#FFFFFF';"; e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor='#d9ece1';cursor='hand';" ;}else if( itemType == ListItemType.AlternatingItem){ e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor='#a0d7c4';"; e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor='#d9ece1';cursor='hand';" ;}添加一个编号列:DataTable dt= c.ExecuteRtnTableForAccess(sqltxt); //执行sql返回的DataTableDataColumn dc=dt.Columns.Add("number",System.Type.GetType("System.String"));for(int i=0;i<dt.Rows.Count;i++){ dt.Rows[i]["number"]=(i+1).ToString();}DataGrid1.DataSource=dt;DataGrid1.DataBind();DataGrid1中添加一个CheckBox,页面中添加一个全选框private void CheckBox2_CheckedChanged(object sender, System.EventArgs e){ foreach(DataGridItem thisitem in DataGrid1.Items) { ((CheckBox)thisitem.Cells[0].Controls[1]).Checked=CheckBox2.Checked; }}将当前页面中DataGrid1显示的数据全部删除foreach(DataGridItem thisitem in DataGrid1.Items){ if(((CheckBox)thisitem.Cells[0].Controls[1]).Checked) { string strloginid= DataGrid1.DataKeys[thisitem.ItemIndex].ToString();Del (strloginid); //删除函数 }}30.当文件在不同目录下,需要获取数据库连接字符串(如果连接字符串放在Web.config,然后在Global.asax中初始化) []在Application_Start中添加以下代码:Application["ConnStr"]=this.Context.Request.PhysicalApplicationPath+ConfigurationSettings. AppSettings["ConnStr"].ToString();31. 变量.ToString() []字符型转换 转为字符串12345.ToString("n"); //生成 12,345.0012345.ToString("C"); //生成 ¥12,345.0012345.ToString("e"); //生成 1.234500e+00412345.ToString("f4"); //生成 12345.000012345.ToString("x"); //生成 3039 (16进制)12345.ToString("p"); //生成 1,234,500.00%32、变量.Substring(参数1,参数2); []截取字串的一部分,参数1为左起始位数,参数2为截取几位。 如:string s1 = str.Substring(0,2);33.在自己的网站上登陆其他网站:(如果你的页面是通过嵌套方式的话,因为一个页面只能有一个FORM,这时可以导向另外一个页面再提交登陆信息) []<SCRIPT language="javascript"><!-- function gook(pws) { frm.submit(); }//--></SCRIPT> <body leftMargin="0" topMargin="0" οnlοad="javascript:gook()" marginwidth="0" marginheight="0"><form name="frm" action=" http://220.194.55.68:6080/login.php?retid=7259 " method="post"><tr><td><input id="f_user" type="hidden" size="1" name="f_user" runat="server"><input id="f_domain" type="hidden" size="1" name="f_domain" runat="server"><input class="box" id="f_pass" type="hidden" size="1" name="pwshow" runat="server"><INPUT id="lng" type="hidden" maxLength="20" size="1" value="5" name="lng"><INPUT id="tem" type="hidden" size="1" value="2" name="tem"></td></tr></form>文本框的名称必须是你要登陆的网页上的名称,如果源码不行可以用vsniffer 看看。下面是获取用户输入的登陆信息的代码:string name;name=Request.QueryString["EmailName"];try{ int a=name.IndexOf("@",0,name.Length); f_user.Value=name.Substring(0,a); f_domain.Value=name.Substring(a+1,name.Length-(a+1)); f_pass.Value=Request.QueryString["Psw"];}catch{ Script.Alert("错误的邮箱!"); Server.Transfer("index.aspx");}