Question

我希望DropDownList被禁用，並且只有在點擊編輯鏈接Gridview後才能啓用它。截至目前，它顯示DropDownList在編輯鏈接之前和之後被禁用。
代碼：

<asp:DropDownList ID="DropDownList1" runat="server" Height="30px" Width="190px" SelectedValue='<%# Eval("FAQGroup") %>' Enabled="false" > 
    <asp:ListItem Value="Most asked FAQ"></asp:ListItem> 
    <asp:ListItem Value="Normal FAQ"></asp:ListItem> 
</asp:DropDownList> 

aspx.cs

protected void gvFAQ_RowEditing(object sender, GridViewEditEventArgs e) 
    { 
     gvFAQ.Columns[3].Visible = true; 

     DropDownList DDL= (DropDownList)gvFAQ.Rows[e.NewEditIndex].FindControl("DropDownList1"); 
     DDL.Enabled = true; 

     gvFAQ.EditIndex = e.NewEditIndex; 
     bind(); 
    } 

Answer 1

當你在RowEditing事件處理程序的末尾調用bind，GridView控件被清除和重新填充，並創建一個新的DropDownList每一行。在RowDataBound事件處理程序中的數據被綁定後，控制必須使能，例如：

protected void gvFAQ_RowDataBound(object sender, GridViewRowEventArgs e) 
{ 
    if (e.Row.RowType == DataControlRowType.DataRow) 
    { 
     DropDownList ddl = e.Row.FindControl("DropDownList1") as DropDownList; 
     ddl.Enabled = e.Row.RowIndex == gvFAQ.EditIndex; 
    } 
}