1. 開啟新的視窗並傳送參數:
傳送參數:
response.write("<script>window.open
('*.aspx?id="+this.DropDownList1.SelectIndex+"&id1="++"')</ script>")
接收參數:
string a = Request.QueryString("id");
string b = Request.QueryString("id1");
2.為按鈕新增對話方塊
Button1.Attributes.Add("onclick","return confirm('確認?')");
button.attributes.add("onclick","if(confirm('are you sure?'))
{return true;}else{return false;}")
3.刪除表格選定記錄
int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString()
4.刪除表格記錄警告
private void DataGrid_ItemItemCreated(Object senderender, DataGridItemEventArgs e)
{
switch(e.Item.ItemType)
{
case ListItemType.Item :
case ListItemType.AlternatingItem :
case ListItemType.EditItem:
TableCell myTableCell;
myTableCell
= e.Item.Cells[14]
;
myTableCell.Controls[0];
myDeleteButton.Attributes.Add
("onclick","return confirm('您是否確定要刪除這條訊息');");
break;
default:
break;
}
}
5.點擊表格行連結另一頁
private void grdCustomer_ItemDataBound
(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//點選表格開啟
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 + "');");
}
雙擊表格連接到另一頁,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 + "'");
}
雙擊表格開啟新一頁
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 + "')");
}
★特別注意:【?id=】 處不能為【? id =】
6.表格超連接列傳遞參數
<asp:HyperLinkColumn Target="_blank" headertext="ID號碼" DataTextField="id"
NavigateUrl="aaa.aspx?id='<%# DataBinder.Eval(Container.DataItem, "資料欄位1")%>'
& name='<%# DataBinder.Eval(Container.DataItem, "資料欄位2")%>' />
7.表格點擊改變顏色
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';");
}
寫在DataGrid的_ItemDataBound裡
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.關於日期格式
日期格式設定
DataformatString="{0:yyyy-MM-dd}"
我覺得應該在itembound事件中
e.items.cell["你的列"].text=DateTime.Parse(e .items.cell["你的列"].text.ToString("yyyy-MM-dd"))
9.取得錯誤訊息並到指定頁面
不要使用Response.Redirect,而應該使用Server.Transfer
eg
// in global.asax
protected void Application_Error(Object sender, EventArgs e) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer("MyErrorPage.aspx");
//其餘的非HttpUnhandledException異常交給ASP.NET自己處理就okay了
}
Redirect會導致post-back的產生從而遺失了錯誤訊息,所以頁面導向應該直接在伺服器端執行,這樣就可以在錯誤處理頁面得到出錯訊息並進行對應的處理
10.清空Cookie
Cookie.Expires=[DateTime ];
Response.Cookies("UserName").Expires = 0
11.自訂異常處理
//自訂異常處理類
using System;
using System.Diagnostics;
namespace MyAppException
{
/**//// <summary>
/// 從系統異常類別ApplicationException繼承的應用程式異常處理類別。
/// 自動將異常內容記錄到Windows NT/2000的應用程式日誌
/// </summary>
public class AppException:System.ApplicationException
{
public AppException()
{
if (ApplicationConfiguration.EventLogEnabled)
LogEvent("出現一個未知錯誤。");
}
public AppException(string message)
{
LogEvent(message);
}
public AppException(string message,Exception innerException)
{
LogEvent(message);
if (innerException != null)
{
LogEvent(innerException.Message);
}
}
//日誌記錄類
using System;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
namespace MyEventLog
{
/**//// <summary>
/// 事件日誌記錄類,提供事件日誌記錄支持
/// <remarks>
/// 定義了4個日誌記錄方法(error, warning, info, trace)
/// </remarks>
/// </summary>
public class ApplicationLog
{
/**//// <summary>
/// 將錯誤訊息記錄到Win2000/NT事件日誌中
/// <param name="message">需要記錄的文字資訊</param>
/// </summary>
public static void WriteError(String message)
{
WriteLog(TraceLevel.Error, message);
}
/**//// <summary>
/// 將警告訊息記錄到Win2000/NT事件日誌中
/// <param name="message">需要記錄的文字資訊</param>
/// </summary>
public static void WriteWarning(String message)
{
WriteLog(TraceLevel.Warning, message);
}
/**//// <summary>
/// 將提示資訊記錄到Win2000/NT事件日誌中
/// <param name="message">需要記錄的文字資訊</param>
/// </summary>
public static void WriteInfo(String message)
{
WriteLog(TraceLevel.Info, message);
}
/**//// <summary>
/// 將追蹤資訊記錄到Win2000/NT事件日誌中
/// <param name="message">需要記錄的文字資訊</param>
/// </summary>
public static void WriteTrace(String message)
{
WriteLog(TraceLevel.Verbose, message);
}
/**//// <summary>
/// 格式化記錄到事件日誌的文字資訊格式
/// <param name="ex">需要格式化的例外物件</param>
/// <param name="catchInfo">異常訊息標題字串.</param>
/// <retvalue>
/// <para>格式後的異常訊息字串,包括異常內容和追蹤堆疊.</para>
/// </retvalue>
/// </summary>
public static String formatException(Exception ex, String catchInfo)
{
StringBuilder strBuilder = new StringBuilder();
if (catchInfo != String.Empty)
{
strBuilder.Append(catchInfo).Append("rn");
}
strBuilder.Append(ex.Message).Append("rn").Append(ex.StackTrace);
return strBuilder.ToString();
}
/**//// <summary>
/// 實際事件日誌寫入方法
/// <param name="level">要記錄資訊的層級(error,warning,info,trace).</param>
/// <param name="messageText">要記錄的文字.</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 );
//寫入事件日誌
eventLog.WriteEntry(messageText, LogEntryType);
}
catch {} //忽略任何異常
}
} //class ApplicationLog
}
12.Panel 橫向捲動,縱向自動擴充
<asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel>
13.回車轉換成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"
http://dotnet.aspx.cc/exam/enter2tab.aspx
14.DataGrid超級連線列
DataNavigateUrlField="欄位名稱" DataNavigateUrlformatString =" http://xx/inc/delete.aspx?ID={0 }"
15.DataGrid行隨滑鼠變色
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"+""");
}
}
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="選取">
<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>
後台程式碼
protected void CheckAll_CheckedChanged(object sender, System.EventArgs e)
{
//改變列的選定,實現全選或全不選。
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;
}
}
}
17.數字格式化
【<%#Container.DataItem("price")%>的結果是500.0000,怎樣格式化為500.00?】
<%#Container.DataItem("price","{0:¥#,##0.00}")%>
int i=123456;
string s=i.ToString("###,###.00");
18.日期格式化
【aspx頁面內:<%# 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-Md}")%>
該如何改?
【格式化日期】
取出,一般是object
((DateTime)objectFromDB).ToString("yyyy-MM-dd");
【日期的驗證表達式】
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]))$
【大小寫轉換】
HttpUtility.HtmlEncode(string);
HttpUtility.HtmlDecode(string)
19.如何設定全域變數
Global.asax中Application_Start()事件中新增Application[屬性名稱] = xxx;
就是你的全域變數
20.怎麼作到HyperLinkColumn產生的連接後,點選連接,開啟新視窗?
HyperLinkColumn有個屬性Target,將器值設定成"_blank"即可.(Target="_blank")
【ASPNETMENU】點選選單項目彈出新視窗在你的menuData.xml檔案的選單項目中加入URLTarget="_blank"
如:
<?xml version="1.0" encoding="GB2312"?>
<MenuData ImagesBaseURL="images/">
<MenuGroup>
<MenuItem Label="內參訊息" URL="Infomation.aspx" >
<MenuGroup ID="BBC">
<MenuItem Label="公告資訊" URL="Infomation.aspx"
URLTarget="_blank" LeftIcon="file.gif"/>
<MenuItem Label="編制資訊簡報" URL="NewInfo.aspx" LeftIcon="file.gif" />
最好將你的aspnetmenu升級到1.2版