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ApplicationException繼承的應用程式異常處理類。
/// 自動將異常內容記錄到Windows NT/2000的應用程式記錄檔
/// </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>
/// 事件記錄記錄類,提供事件記錄記錄支援
/// <remarks>
/// 定義了4個日誌記錄方法 (error, warning, info, trace)
///
</remarks>
/// </summary>
public class ApplicationLog
{
///
<summary>
/// 將錯誤資訊記錄到Win2000/NT事件記錄中
/// <param
name="message">需要記錄的文本資訊</param>
/// </summary>
public static void
WriteError(String message)
{
WriteLog(TraceLevel.Error, message);
}
/// <summary>
/// 將警告資訊記錄到Win2000/NT事件記錄中
/// <param
name="message">需要記錄的文本資訊</param>
/// </summary>
public static void
WriteWarning(String message)
{
WriteLog(TraceLevel.Warning, message);
}
/// <summary>
/// 將提示資訊記錄到Win2000/NT事件記錄中
/// <param
name="message">需要記錄的文本資訊</param>
/// </summary>
public static void
WriteInfo(String message)
{
WriteLog(TraceLevel.Info, message);
}
/// <summary>
/// 將跟蹤資訊記錄到Win2000/NT事件記錄中
/// <param
name="message">需要記錄的文本資訊</param>
/// </summary>
public static void
WriteTrace(String message)
{
WriteLog(TraceLevel.Verbose, message);
}
/// <summary>
/// 格式化記錄到事件記錄的文本資訊格式
/// <param
name="ex">需要格式化的異常對象</param>
/// <param name="catchInfo">異常資訊標題字串.</param>
/// <retvalue>
/// <para>格式後的異常資訊字串,包括異常內容和跟蹤堆棧.</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>
/// 實際事件記錄寫入方法
/// <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 );
//寫入事件記錄
eventLog.WriteEntry(messageText, LogEntryType);
}
catch {} //忽略任何異常
}
} //class ApplicationLog
}
12.Panel 橫向滾動,縱向自動擴充
<asp:panel
style="overflow-x:scroll;overflow-y:auto;"></asp:panel>
13.斷行符號轉換成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"
14.DataGrid超級串連列
DataNavigateUrlField="欄位名" 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>
後台代碼
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-M-d}")%>
應該如何改?
【格式化日期】
取出來,一般是object((DateTime)objectFromDB).ToString("yyyy-MM-dd");
【日期的驗證運算式】
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
添加Application[屬性名稱] = xxx;
就是你的全域變數