c# - Gridview Itemtemplate DropDownList 已启用

Question

我希望禁用 DropDownList 并仅在单击 Gridview 上的编辑链接后启用它。截至目前，它显示 DropDownList 在编辑链接之前和之后被禁用。
代码:

<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

当您在 RowEditing 事件处理程序结束时调用 bind 时，GridView 将被清除并重新填充，并在每一行中创建一个新的 DropDownList。绑定(bind)数据后必须启用控件，例如在 RowDataBound 事件处理程序中:

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;
    }
}