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來源: http://www.360doc.com/content/080601/01/39825_1299786.html一、為GridView添加索引列 <asp:TemplateField HeaderText="ID"> <ItemTemplate> <%# Container.DataItemIndex +1 %> ItemTemplate> asp:TemplateField> 二、批量刪除列 模板列代碼: <asp:TemplateField HeaderText="選擇"> <ItemTemplate> <asp:CheckBox ID="chkSelect" runat="server" /> ItemTemplate> asp:TemplateField> 全選: for (int i = 0; i < gv.Rows.Count; i++) { CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect"); chkSelect.Checked = true; } 反選: for (int i = 0; i < gv.Rows.Count; i++) { CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect"); chkSelect.Checked = !chkSelect.Checked; } 取消選擇: for (int i = 0; i < gv.Rows.Count; i++) { CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect"); chkSelect.Checked = false; } 刪除: for (int i = 0; i < gv.Rows.Count; i++) { CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect"); if (chkSelect.Checked) { //刪除記錄 } } 三、刪除表格選定記錄 int id = (int)MyDataGrid.DataKeys[e.Item.ItemIndex]; //在調用前必須指定DataKeyNames屬性為要獲取
的主鍵。 string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString(); 四、為按鈕添加確認對話框 button.Attributes.Add("onclick","return confirm(’確認?’)"); 五、點擊表格行鏈接另一頁 private void grdCustomer_ItemDataBound(object sender,
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 <asp:HyperLinkColumn Target="_blank" headertext="ID號" DataTextField="id"
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 e.items.cell["time"].text=DateTime.Parse(e.items.cell["time"].text.ToString("yyyy-MM-dd")) 八、統一捕獲異常 Global.asax中: protected void Application_Error(Object sender, EventArgs e) { 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; using System.Diagnostics;
namespace MyAppException { /**//// <summary> /// 從係統異常類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 private void 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=\""+ "#EEE6F8"+"\""); } } 十二、讀取DataGrid控件的TextBox值 foreach(DataGrid dgi in yourDataGrid.Items) { TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId"); tb.Text. } 十三、當點擊編輯鍵時,控製文本框的大小 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") } } 十四、彈出對話框 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); } 十、Panel 橫向滾動,縱向自動擴展 <asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel> |
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