gridview中的dropdownlist从不可用到可用

Question

dropdwonlist 已经绑定好数据，载入页面时时enable=false；在点击“编辑”键后enable=true；但是依然是不可用
给出代码，请大家指点：
 protected void GridView1_RowEditing1(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;            GridViewRow gvr = GridView1.Rows[e.NewEditIndex];            downtest = (DropDownList)gvr.FindControl("DropDownList1");
           
            downtest.Enabled = true;
           
        }

Answer 1

enable=false,这个在哪里定义的，aspx页面？ 

Answer 2

<ItemTemplate> 
<asp:DropDownList ID="ddlSort" runat="server" Width="98%"> 
    </asp:DropDownList> 
<asp:HiddenField ID="Hd_Sort" runat="server" Value=' <%# Eval("BalSort")%>' /> 
</ItemTemplate> 
protected void gv_RowDataBound(object sender, GridViewRowEventArgs e) 
        { 
            if (e.Row.RowIndex != -1) 
            {  if (e.Row.RowState == DataControlRowState.Edit || e.Row.RowState == (DataControlRowState.Alternate | DataControlRowState.Edit)) 
            { 
                ((DropDownList)e.Row.FindControl("ddlSort")).SelectedValue = ((HiddenField)e.Row.FindControl("Hd_Sort")).Value; 
            } 
            } 
        } protected void gv_RowEditing(object sender, GridViewEditEventArgs e) 
        { 
            gv.EditIndex = e.NewEditIndex; 
            string strSort = ((DropDownList)gv.Rows[e.NewEditIndex].FindControl("ddlSort")).SelectedValue.Trim(); 
            gv.EditIndex = -1; 
            BindData(); 
        } 

Answer 3

RowEditing事件的最后要绑定一下gridview

Answer 4

http://blog.csdn.net/xianfajushi/archive/2008/11/30/3413317.aspx