ASP.NET - Problème de page de contenu

Question

J'ai copié les commandes et les décorations d'une page de contenu à une autre, car elles sont presque similaires.

Mais les problèmes suivants se produisent:

(1) Button events are not firing. 

(2) One page is loaded multiple times. 

(3) Some AJAX buttons are not visible. 

Quelqu'un peut-il me dire pourquoi est-ce qui se passe?

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="StudentControlPanel.aspx.cs" Inherits="Student_StudentControlPanel" Title="Untitled Page" %> 

<%@ Register Assembly="Coolite.Ext.Web" Namespace="Coolite.Ext.Web" TagPrefix="ext" %> 
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> 
    <asp:Label ID="Label1" runat="server" Font-Bold="True" ForeColor="#C00000" Text="Label" 
     Width="318px"></asp:Label><br /> 
    <ext:button id="btnLogOut" runat="server" autopostback="True" onclick="btnLogOut_Click" 
     text="Log Out"></ext:button> 
    <table> 
     <tr> 
      <td style="width: 3px"> 
    <table> 
     <tr> 
      <td colspan="5"> 
       <strong><span>Student Control Panel</span></strong></td> 
     </tr> 
     <tr> 
      <td align="right"> 
       Username :</td> 
      <td colspan="2"> 
       <asp:Label ID="labUsername" runat="server" Text="Label"></asp:Label></td> 
      <td colspan="1" align="right"> 
       Roll No. :</td> 
      <td colspan="1"> 
       <asp:Label ID="labRollNo" runat="server" Text="Label"></asp:Label></td> 
     </tr> 
     <tr> 
      <td align="right"> 
       Student Name :</td> 
      <td colspan="2"> 
       <asp:Label ID="labName" runat="server" Text="Label"></asp:Label></td> 
      <td colspan="1" align="right"> 
       Reg No. :</td> 
      <td colspan="1"> 
       <asp:Label ID="labRegNo" runat="server" Text="Label"></asp:Label></td> 
     </tr> 
     <tr> 
      <td align="right"> 
      </td> 
      <td colspan="2"> 
      </td> 
      <td colspan="1" align="right"> 
       Department :</td> 
      <td colspan="1"> 
       <asp:Label ID="labDepartment" runat="server" Text="Label"></asp:Label></td> 
     </tr> 
     <tr> 
      <td align="right"> 
      </td> 
      <td colspan="2"> 
      </td> 
      <td colspan="1"> 
      </td> 
      <td colspan="1"> 
      </td> 
     </tr> 
     <tr> 
      <td align="right" style="height: 21px"> 
      </td> 
      <td colspan="2" style="height: 21px"> 
      </td> 
      <td colspan="1" style="height: 21px"> 
      </td> 
      <td colspan="1" style="height: 21px"> 
      </td> 
     </tr> 
    </table> 
      </td> 
      <td colspan="2" valign="top"><table> 
        <tr> 
         <td colspan="3"> 
          <strong>Mails</strong></td> 
        </tr> 
        <tr> 
         <td colspan="3" style="text-align: center"> 
          <asp:Button ID="btnMail" runat="server" Height="24px" Text="Send Mail" Width="82px" OnClick="btnMail_Click" /> 
         </td> 
        </tr> 
        <tr> 
         <td colspan="3"> 
          <asp:Button ID="btnOldMails" runat="server" Text="Old Mails" OnClick="btnOldMails_Click" /></td> 
        </tr> 
       </table> 
      </td> 
     </tr> 
    </table> 
    <br /> 
    &nbsp;<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="NoticeObjectDataSource" OnSelectedIndexChanging="GridView1_SelectedIndexChanging"> 
     <Columns> 
      <asp:CommandField HeaderText="View Notice" ShowSelectButton="True" /> 
      <asp:BoundField DataField="NoticeCode" HeaderText="NoticeCode" SortExpression="NoticeCode" /> 
      <asp:BoundField DataField="HangingDate" HeaderText="HangingDate" SortExpression="HangingDate" /> 
      <asp:BoundField DataField="TeacherCode" HeaderText="TeacherCode" SortExpression="TeacherCode" /> 
      <asp:BoundField DataField="TargetSessionCode" HeaderText="TargetSessionCode" SortExpression="TargetSessionCode" /> 
      <asp:BoundField DataField="CourseCode" HeaderText="CourseCode" SortExpression="CourseCode" /> 
      <asp:BoundField DataField="NoticeSubject" HeaderText="NoticeSubject" SortExpression="NoticeSubject" /> 
      <asp:BoundField DataField="NoticeContent" HeaderText="NoticeContent" SortExpression="NoticeContent" /> 
      <asp:BoundField DataField="ExpiryDate" HeaderText="ExpiryDate" SortExpression="ExpiryDate" /> 
      <asp:CheckBoxField DataField="IsExpired" HeaderText="IsExpired" SortExpression="IsExpired" /> 
     </Columns> 
    </asp:GridView> 
    <asp:ObjectDataSource 
     ID="NoticeObjectDataSource" 
     runat="server" 
     SelectMethod="GetNoticesBySessionCode" 
     TypeName="Ice_Web_Portal.BO.Notice" OnSelecting="NoticeObjectDataSource_Selecting"> 
     <SelectParameters> 
      <asp:Parameter Name="sessionCode" Type="String" /> 
     </SelectParameters> 
    </asp:ObjectDataSource> 
    <br /> 
    <ext:scriptmanager id="ScriptManager1" runat="server" theme="Slate"></ext:scriptmanager> 
</asp:Content> 

using System; 
using System.Data; 
using System.Configuration; 
using System.Collections; 
using System.Web; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.UI.WebControls.WebParts; 
using System.Web.UI.HtmlControls; 
using System.Collections.Generic; 



public partial class Student_StudentControlPanel : System.Web.UI.Page 
{ 
    string sessionCode = string.Empty; 
    string username = string.Empty; 

    protected void Page_Load(object sender, EventArgs e) 
    { 
     username = (string)Request.QueryString["username"]; 

     Student std = Student.GetStudentByUsername(username); 

     if (std != null) 
     { 
      labName.Text = std.StudentName; 
      labUsername.Text = username; 
      labRollNo.Text = std.RollNo; 
      labRegNo.Text = std.RegNo; 

      Dept dpt = std.Department; 

      if (dpt != null) 
      { 
       labDepartment.Text = dpt.DeptName; 
      } 
      else 
      { 
       labDepartment.Text = "?"; 
      } 

      sessionCode = std.SessionCode; 
     } 
    } 

    protected void NoticeObjectDataSource_Selecting(object sender, ObjectDataSourceSelectingEventArgs e) 
    { 
     e.InputParameters["SessionCode"] = sessionCode; 
    } 

    protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e) 
    { 
     int rowIndex = e.NewSelectedIndex; 

     string noticeCode = GridView1.Rows[rowIndex].Cells[1].Text; 
     string username = this.labUsername.Text; 

     Server.Transfer(@"~/Student/ViewNoticeDetails.aspx?NoticeCode=" + noticeCode + "&username=" + username); 
    } 

    protected void btnMail_Click(object sender, EventArgs e) 
    { 
     try 
     { 
      Server.Transfer(@"~/Student/StudentSendMail.aspx?username=" + username); 
      //Response.Redirect(@"~/Student/StudentSendMail.aspx?username=" + username); 
     } 
     catch (Exception ex) 
     { 
      string m; 
     } 
    } 
    protected void btnOldMails_Click(object sender, EventArgs e) 
    { 
     try 
     { 
      Server.Transfer(@"~/Student/StudentOldMail.aspx?username=" + username); 
      //Response.Redirect(@"~/Student/StudentSendMail.aspx?username=" + username); 
     } 
     catch (Exception ex) 
     { 
      string m; 
     } 
    } 

    protected void btnLogOut_Click(object sender, EventArgs e) 
    { 
     AspNetUtil util = new AspNetUtil(this.Page); 
     util.DisposeCookie("user"); 

     Server.Transfer("~/Default.aspx"); 
    } 
} 

Answer 1

Si vous utilisez Visual Studio, il est possible que les contrôles ne sont pas enregistrés w/le fichier .designer.cs. Vérifiez pour vous assurer qu'ils sont tous là.