錯誤的SqlDataSource數據綁定到GridView的

Question

我收到此錯誤：

Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

我試圖綁定SqlDataSource的結果爲GridView。

這是代碼：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
    DataSourceID="grid_getbranch" Height="111px" Width="91px"> 
    <Columns> 
     <asp:TemplateField HeaderText="branch" SortExpression="branch"> 
      <EditItemTemplate> 
       <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("branch") %>'></asp:TextBox> 
      </EditItemTemplate> 
      <ItemTemplate> 
       <asp:Label ID="Label1" runat="server" Text='<%# Bind("branch") %>'></asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
     <asp:TemplateField HeaderText="name" SortExpression="name"> 
      <EditItemTemplate> 
       <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("name") %>'></asp:TextBox> 
      </EditItemTemplate> 
      <ItemTemplate> 
       <asp:Label ID="Label2" runat="server" Text='<%# Bind("name") %>'></asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
    </Columns> 
</asp:GridView> 
<asp:SqlDataSource ID="grid_getbranch" runat="server" 
    ConnectionString="<%$ ConnectionStrings:svpolyConnectionString %>" 
    SelectCommand="SELECT branch.branch, course.name FROM branch INNER JOIN course ON branch.c_id = course.id WHERE (branch.c_id = @c_id)"> 
    <SelectParameters> 
     <asp:ControlParameter ControlID="DropDownList2" Name="c_id" 
      PropertyName="SelectedValue" /> 
    </SelectParameters> 
</asp:SqlDataSource> 

Answer 1

你可以嘗試改變你的SelectCommand查詢：

SELECT branch.branch AS branch, course.name AS name FROM branch INNER JOIN course ON branch.c_id = course.id WHERE (branch.c_id = @c_id) 

我不知道它是造成你的錯誤，但它是我想嘗試的第一件事。

Answer 2

刪除綁定到標籤字段。

也可參考這個問題How to 'bind' Text property of a label in markup