1.為按鈕添加確認(rèn)對(duì)話框
button1.attributes.add("onclick","return confirm(’確認(rèn)?’)");
button.attributes.add("onclick","if(confirm(’are you sure...?’)){return true;}else{return false;}")
2.刪除表格選定記錄
//獲得datagrid主鍵
int intempid = (int)mydatagrid.datakeys[e.item.itemindex];
string deletecmd = "delete from employee where emp_id = " + intempid.tostring();
3.刪除表格記錄警告
private void datagrid_itemcreated(object sender,datagriditemeventargs e)
{
 switch(e.item.itemtype)
 {
  case listitemtype.item :
  case listitemtype.alternatingitem :
  case listitemtype.edititem://編輯項(xiàng)
   tablecell mytablecell;
   mytablecell = e.item.cells[14];
   linkbutton mydeletebutton ;
   mydeletebutton = (linkbutton)mytablecell.controls[0];
   mydeletebutton.attributes.add("onclick","return confirm(’您是否確定要?jiǎng)h除這條信息’);");
   break;
  default:
   break;
 }
}
4.點(diǎn)擊表格行鏈接另一頁(yè)
private void grdcustomer_itemdatabound(object sender, system.web.ui.webcontrols.datagriditemeventargs e)
{
 //點(diǎn)擊表格打開(kāi)
 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 + "’);");
}
5.雙擊表格連接到另一頁(yè)
在itemdatabound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 + "’");
}
6.雙擊表格打開(kāi)新一頁(yè)
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 + "’)");
}
7.表格超連接列傳遞參數(shù)
<asp:hyperlinkcolumn target="_blank" headertext="id號(hào)" datatextfield="id" navigateurl="aaa.aspx?id=’
 <%# databinder.eval(container.dataitem, "數(shù)據(jù)字段1")%>’&name=’<%# databinder.eval(container.dataitem, "數(shù)據(jù)字段2")%>’/>
8.表格點(diǎn)擊改變顏色
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’;");
} 
9.在表格行中移動(dòng)鼠標(biāo)時(shí)改變顏色
寫(xiě)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=’’;");
}
10.關(guān)于日期格式
日期格式設(shè)定
dataformatstring="{0:yyyy-mm-dd}"
我覺(jué)得應(yīng)該在itembound事件中
e.items.cell["你的列"].text=datetime.parse(e.items.cell["你的列"].text.tostring("yyyy-mm-dd"))
11.獲取錯(cuò)誤信息并到指定頁(yè)面
不要使用response.redirect,而應(yīng)該使用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異常交給asp.net自己處理就okay了 :)
}
redirect會(huì)導(dǎo)致post-back的產(chǎn)生從而丟失了錯(cuò)誤信息,所以頁(yè)面導(dǎo)向應(yīng)該直接在服務(wù)器端執(zhí)行,這樣就可以在錯(cuò)誤處理頁(yè)面得到出錯(cuò)信息并進(jìn)行相應(yīng)的處理。
12.清空cookie
cookie.expires=[datetime];
response.cookies("username").expires = 0;
13.自定義異常處理
//自定義異常處理類(lèi) 
using system;
using system.diagnostics;
namespace myappexception
{
 /// <summary>
 /// 從系統(tǒng)異常類(lèi)applicationexception繼承的應(yīng)用程序異常處理類(lèi)。
 /// 自動(dòng)將異常內(nèi)容記錄到windows nt/2000的應(yīng)用程序日志
 /// </summary>
 public class appexception:system.applicationexception
 {
  public appexception()
  {
   if (applicationconfiguration.eventlogenabled)logevent("出現(xiàn)一個(gè)未知錯(cuò)誤。");
  }
 public appexception(string message)
 {
  logevent(message);
 }
 public appexception(string message,exception innerexception)
 {
  logevent(message);
  if (innerexception != null)
  {
   logevent(innerexception.message);
  }
 }
 //日志記錄類(lèi)
 using system;
 using system.configuration;
 using system.diagnostics;
 using system.io;
 using system.text;
 using system.threading;
 namespace myeventlog
 {
  /// <summary>
  /// 事件日志記錄類(lèi),提供事件日志記錄支持 
  /// <remarks>
  /// 定義了4個(gè)日志記錄方法 (error, warning, info, trace) 
  /// </remarks>
  /// </summary>
  public class applicationlog
  {
   /// <summary>
   /// 將錯(cuò)誤信息記錄到win2000/nt事件日志中
   /// <param name="message">需要記錄的文本信息</param>
   /// </summary>
   public static void writeerror(string message)
   {
    writelog(tracelevel.error, message);
   }
   /// <summary>
   /// 將警告信息記錄到win2000/nt事件日志中
   /// <param name="message">需要記錄的文本信息</param>
   /// </summary>
   public static void writewarning(string message)
   {
    writelog(tracelevel.warning, message);  
   }
   /// <summary>
   /// 將提示信息記錄到win2000/nt事件日志中
   /// <param name="message">需要記錄的文本信息</param>
   /// </summary>
   public static void writeinfo(string message)
   {
    writelog(tracelevel.info, message);
   }
   /// <summary>
   /// 將跟蹤信息記錄到win2000/nt事件日志中
   /// <param name="message">需要記錄的文本信息</param>
   /// </summary>
   public static void writetrace(string message)
   {
    writelog(tracelevel.verbose, message);
   }
   /// <summary>
   /// 格式化記錄到事件日志的文本信息格式
   /// <param name="ex">需要格式化的異常對(duì)象</param>
   /// <param name="catchinfo">異常信息標(biāo)題字符串.</param>
   /// <retvalue>
   /// <para>格式后的異常信息字符串,包括異常內(nèi)容和跟蹤堆棧.</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>
   /// 實(shí)際事件日志寫(xiě)入方法
   /// <param name="level">要記錄信息的級(jí)別(error,warning,info,trace).</param>
   /// <param name="messagetext">要記錄的文本.</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 );
     //寫(xiě)入事件日志
     eventlog.writeentry(messagetext, logentrytype);
    }
   catch {} //忽略任何異常
  } 
 } //class applicationlog
}
14.panel 橫向滾動(dòng),縱向自動(dòng)擴(kuò)展
<asp:panel ></asp:panel>
15.回車(chē)轉(zhuǎn)換成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"
16.datagrid超級(jí)連接列
datanavigateurlfield="字段名" datanavigateurlformatstring=http://xx/inc/delete.aspx?id={0}
17.datagrid行隨鼠標(biāo)變色
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"+"/"");
 }
}
18.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="選中">
<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>  
后臺(tái)代碼
protected void checkall_checkedchanged(object sender, system.eventargs e)
{
 //改變列的選定,實(shí)現(xiàn)全選或全不選。
 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;
  }
 }
}
19.數(shù)字格式化
【<%#container.dataitem("price")%>的結(jié)果是500.0000,怎樣格式化為500.00?】
<%#container.dataitem("price","{0:¥#,##0.00}")%>
int i=123456;
string s=i.tostring("###,###.00");
20.日期格式化
【aspx頁(yè)面內(nèi):<%# databinder.eval(container.dataitem,"company_ureg_date")%>
顯示為: 2004-8-11 19:44:28
我只想要:2004-8-11 】
<%# databinder.eval(container.dataitem,"company_ureg_date","{0:yyyy-m-d}")%>
  應(yīng)該如何改?
【格式化日期】
取出來(lái),一般是object((datetime)objectfromdb).tostring("yyyy-mm-dd");
【日期的驗(yàn)證表達(dá)式】
a.以下正確的輸入格式: [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.以下正確的輸入格式:[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]))$ 
  【大小寫(xiě)轉(zhuǎn)換】
httputility.htmlencode(string);
httputility.htmldecode(string);
21.怎樣作到hyperlinkcolumn生成的連接后,點(diǎn)擊連接,打開(kāi)新窗口?
hyperlinkcolumn有個(gè)屬性target,將器值設(shè)置成"_blank"即可.(target="_blank")
【aspnetmenu】點(diǎn)擊菜單項(xiàng)彈出新窗口
在你的menudata.xml文件的菜單項(xiàng)中加入urltarget="_blank",如:
<?xml version="1.0" encoding="gb2312"?>
<menudata imagesbaseurl="images/"> 
<menugroup>
<menuitem label="內(nèi)參信息" url="infomation.aspx" >
<menugroup id="bbc">
<menuitem label="公告信息" url="infomation.aspx" urltarget="_blank" lefticon="file.gif"/>
<menuitem label="編制信息簡(jiǎn)報(bào)" url="newinfo.aspx" lefticon="file.gif" />
......
  最好將你的aspnetmenu升級(jí)到1.2版
22.讀取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個(gè)模板列包含textbox分別為 dg_shuliang (數(shù)量) dg_danjian(單價(jià)) dg_jine(金額)分別在5.6.7列,要求在錄入數(shù)量及單價(jià)的時(shí)候自動(dòng)算出金額即:數(shù)量*單價(jià)=金額還要求錄入時(shí)限制為 數(shù)值型.我如何用客戶端腳本實(shí)現(xiàn)這個(gè)功能?
<asp:templatecolumn headertext="數(shù)量"> 
<itemtemplate>
<asp:textbox id="shuliang" runat=’server’ text=’<%# databinder.eval(container.dataitem,"dg_shuliang")%>’ 
onkeyup=" docal()"
/>
<asp:regularexpressionvalidator id="revs" runat="server" controltovalidate="shuliang" errormessage="must be integer" validationexpression="^/d+$" />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="單價(jià)"> 
<itemtemplate>
<asp:textbox id="danjian" runat=’server’ text=’<%# databinder.eval(container.dataitem,"dg_danjian")%>’ 
onkeyup=" docal()"
/>
<asp:regularexpressionvalidator id="revs2" runat="server" controltovalidate="danjian" errormessage="must be numeric" validationexpression="^/d+(/./d*)?$" />
</itemtemplate>
</asp:templatecolumn>
<asp:templatecolumn headertext="金額"> 
<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選定比較底下的行時(shí),為什么總是刷新一下,然后就滾動(dòng)到了最上面,剛才選定的行因屏幕的關(guān)系就看不到了。
page_load 
page.smartnavigation=true
25.在datagrid中修改數(shù)據(jù),當(dāng)點(diǎn)擊編輯鍵時(shí),數(shù)據(jù)出現(xiàn)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.對(duì)話框
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. 將時(shí)間格式化:
string aa=datetime.now.tostring("yyyy年mm月dd日");
1.1 取當(dāng)前年月日時(shí)分秒
currenttime=system.datetime.now;
1.2 取當(dāng)前年
int 年= datetime.now.year;
1.3 取當(dāng)前月
int 月= datetime.now.month;
1.4 取當(dāng)前日
int 日= datetime.now.day;
1.5 取當(dāng)前時(shí)
int 時(shí)= datetime.now.hour;
1.6 取當(dāng)前分
int 分= datetime.now.minute;
1.7 取當(dāng)前秒
int 秒= datetime.now.second;
1.8 取當(dāng)前毫秒
int 毫秒= datetime.now.millisecond;
28.自定義分頁(yè)代碼:
先定義變量 :
public static int pagecount; //總頁(yè)面數(shù) 
public static int curpageindex=1; //當(dāng)前頁(yè)面   
下一頁(yè):
if(datagrid1.currentpageindex < (datagrid1.pagecount - 1)) 
{ 
 datagrid1.currentpageindex += 1; 
 curpageindex+=1; 
} 
bind(); // datagrid1數(shù)據(jù)綁定函數(shù)
上一頁(yè):
if(datagrid1.currentpageindex >0) 
{ 
 datagrid1.currentpageindex += 1; 
 curpageindex-=1; 
} 
bind(); // datagrid1數(shù)據(jù)綁定函數(shù)
直接頁(yè)面跳轉(zhuǎn):
int a=int.parse(jumppage.value.trim());//jumppage.value.trim()為跳轉(zhuǎn)值
if(a<datagrid1.pagecount) 
{ 
 this.datagrid1.currentpageindex=a; 
} 
bind();
29.datagrid添加刪除確認(rèn):
private void datagrid1_itemcreated(object sender, system.web.ui.webcontrols.datagriditemeventargs e) 
{ 
 foreach(datagriditem di in this.datagrid1.items) 
 { 
  if(di.itemtype==listitemtype.item||di.itemtype==listitemtype.alternatingitem) 
  { 
   ((linkbutton)di.cells[8].controls[0]).attributes.add("onclick","return confirm(’確認(rèn)刪除此項(xiàng)嗎?’);"); 
  } 
 } 
} 
30.datagrid樣式交替:
listitemtype itemtype = e.item.itemtype;
if (itemtype == listitemtype.item ) 
{ 
 e.item.attributes["onmouseout"] = " this.style.backgroundcolor=’#ffffff’;"; 
 e.item.attributes["onmouseover"] = " this.style.backgroundcolor=’#d9ece1’;cursor=’hand’;" ; 
} 
else if( itemtype == listitemtype.alternatingitem) 
{ 
 e.item.attributes["onmouseout"] = " this.style.backgroundcolor=’#a0d7c4’;"; 
 e.item.attributes["onmouseover"] = " this.style.backgroundcolor=’#d9ece1’;cursor=’hand’;" ; 
} 
31.datagrid添添加一個(gè)編號(hào)列:
datatable dt= c.executertntableforaccess(sqltxt); //執(zhí)行sql返回的datatable 
datacolumn 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();   
32.datagrid1中添加一個(gè)checkbox,頁(yè)面中添加一個(gè)全選框
private void checkbox2_checkedchanged(object sender, system.eventargs e) 
{ 
 foreach(datagriditem thisitem in datagrid1.items) 
 { 
  ((checkbox)thisitem.cells[0].controls[1]).checked=checkbox2.checked; 
 } 
} 
33.datagrid添將當(dāng)前頁(yè)面中datagrid1顯示的數(shù)據(jù)全部刪除
foreach(datagriditem thisitem in datagrid1.items) 
{ 
 if(((checkbox)thisitem.cells[0].controls[1]).checked) 
 { 
  string strloginid= datagrid1.datakeys[thisitem.itemindex].tostring(); 
  del (strloginid); //刪除函數(shù) 
 } 
} 
34.當(dāng)文件在不同目錄下,需要獲取數(shù)據(jù)庫(kù)連接字符串(如果連接字符串放在web.config,然后在global.asax中初始化)
在application_start中添加以下代碼:
application["connstr"]=this.context.request.physicalapplicationpath+configurationsettings.
   appsettings["connstr"].tostring();
35.變量.tostring()
字符型轉(zhuǎn)換 轉(zhuǎn)為字符串
12345.tostring("n"); //生成 12,345.00 
12345.tostring("c"); //生成 ¥12,345.00 
12345.tostring("e"); //生成 1.234500e+004 
12345.tostring("f4"); //生成 12345.0000 
12345.tostring("x"); //生成 3039 (16進(jìn)制) 
12345.tostring("p"); //生成 1,234,500.00% 
36.在自己的網(wǎng)站上登陸其他網(wǎng)站:(如果你的頁(yè)面是通過(guò)嵌套方式的話,因?yàn)橐粋€(gè)頁(yè)面只能有一個(gè)form,這時(shí)可以導(dǎo)向另外一個(gè)頁(yè)面再提交登陸信息)
<script language="javascript"> 
<!-- 
 function gook(pws) 
 { 
  frm.submit(); 
 } 
//--> 
</script> <body leftmargin="0" topmargin="0" 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> 
文本框的名稱必須是你要登陸的網(wǎng)頁(yè)上的名稱,如果源碼不行可以用vsniffer 看看。
下面是獲取用戶輸入的登陸信息的代碼:
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("錯(cuò)誤的郵箱!"); 
 server.transfer("index.aspx"); 
}
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