ASP.. NET服务器控件显示脱离上下文的消息

本文关键字：上下文 消息 NET 服务器控件 显示 ASP | 更新日期: 2023-09-27 18:01:46

我正在使用这个简单的网页，碰巧放了一些's来纠正我的页面的样式，突然当回到。cs文件编程时，事情很奇怪。所有的代码都显示了类似的错误消息:

错误2名称"TextBox1"在当前上下文中不存在d:'ADO_NETprojects'mywebsite'Default2.aspx.cs

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs"     `enter code here`Inherits="Default2" %>


  <html xmlns="http://www.w3.org/1999/xhtml">
  <head runat="server">
  <title></title>
   </head>
 <body>
 <form id="form1" runat="server">
 <div runat="server">
    <div>
    <asp:ListBox ID="ListBox1" runat="server" AutoPostBack="True" 
        onselectedindexchanged="ListBox1_SelectedIndexChanged" Width="179px"     style="margin-left:100px; margin-bottom:20px;">
    </asp:ListBox>
     </div>
     <hr/>
     <div>
     ListBoxItems 
     <asp:TextBox ID="TextBox1" runat="server"  style="margin-left:20px; margin-top:20px;"></asp:TextBox>
     </div>
     <div>
     <asp:Button ID="Button1" runat="server" onclick="Button1_Click" 
        style="height: 26px; margin-left:100px; margin-top:15px;" Text="ListsBoxItems"  />
     </div>
     <hr/>

     <div>
     DeleteItems:
     <asp:TextBox ID="TextBox2" runat="server" style="margin-top:10px; margin-     left:25px;"></asp:TextBox>
     </div>
     <hr/>
     <div>
     <asp:DropDownList ID="DropDownList1" runat="server" 
             style="margin-top:20px; margin-left:100px; width:200px;" 
            AutoPostBack="True"      onselectedindexchanged="DropDownList1_SelectedIndexChanged">
     </asp:DropDownList>
     </div>
     <div>
     DropDownList:
     <asp:TextBox ID="TextBox3" runat="server" style="margin-left:2px; margin-top:15px;" 
            AutoPostBack="True"></asp:TextBox>
     </div>
     <hr/>

    </div>
    </form>
    </body>
    </html>

ASP.. NET服务器控件显示脱离上下文的消息

右键单击aspx文件，然后选择"convert to web application"， designer.cs文件就生成了

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