爲GridView添加索引列
<ItemTemplate>
<%# Container.DataItemIndex +1 %>
</ItemTemplate>
</asp:TemplateField>
二、批量刪除列
模板列代碼:
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" />
</ItemTemplate>
</asp:TemplateField>
全選:
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
chkSelect.Checked = true;
}
反選:
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
chkSelect.Checked = !chkSelect.Checked;
}
取消選擇:
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
chkSelect.Checked = false;
}
刪除:
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
if (chkSelect.Checked)
{
//刪除記錄
}
}
三、刪除表格選定記錄
的主鍵。
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString();
四、爲按鈕添加確認對話框
五、點擊表格行鏈接另一頁
System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//點擊表格打開
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 + "
’);");
}
六、超連接列傳遞參數
NavigateUrl="aaa.aspx?id=’
<%# DataBinder.Eval(Container.DataItem, "數據字段1")%>’ & name=’<%# DataBinder.Eval
(Container.DataItem, "數據字段2")%>’ />
七、綁定日期格式
八、統一捕獲異常 Global.asax中:
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer("MyErrorPage.aspx");
//編寫添加到日誌的代碼Log.add();
}
九、自定義異常處理
using System.Diagnostics;
namespace MyAppException
{
/// <summary>
/// 從系統異常類ApplicationException繼承的應用程序異常處理類。
/// 自動將異常內容記錄到Windows NT/2000的應用程序日誌
/// </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>
/// 將錯誤信息記錄到Win2000/NT事件日誌中
/// <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事件日誌中
/// <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事件日誌中
/// <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事件日誌中
/// <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誌的文本信息格式
/// <param name="ex">需要格式化的異常對象</param>
/// <param name="catchInfo">異常信息標題字符串.</param>
/// <retvalue>
/// <para>格式後的異常信息字符串,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>
/// 實際事件日誌寫入方法
/// <param name="level">要記錄信息的級別(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 );
//寫入事件日誌
eventLog.WriteEntry(messageText, LogEntryType);
}
catch {} //忽略任何異常
}
} //class ApplicationLog
}
十一、DataGrid行隨鼠標變色
十、Panel 橫向滾動,縱向自動擴展
{
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=/""+ "#EEE6F8"+"/"");
}
}
十二、讀取DataGrid控件的TextBox值
{
TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");
tb.Text.
}
十三、當點擊編輯鍵時,控制文本框的大小
{
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")
}
}
十四、彈出對話框
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);
}