Asp.net c# GridView Sort AutoGenerateColumns false

Question

i'm having trouble to be able to sort my gridview with the parameter AutoGenerateColumns = false The headers are not clickable and so i can't sort, although having the parameter AllowSort = true

Here is my gridview:

 <asp:Label ID="lbSortColumn" runat="server" Visible="False"></asp:Label>
            <asp:GridView ID="gvDeslocFinal" runat="server" Height="181px" Width="1042px" OnRowDataBound="gvDeslocFinal_RowDataBound" AutoGenerateColumns="false" AllowSorting="true" OnSorting="gvDeslocFinal_Sorting" OnPageIndexChanging="gvDeslocFinal_PageIndexChanging" OnSorted="gvDeslocFinal_Sorted" AllowPaging="True">

            <Columns>
                ...
            </Columns>
            <EditRowStyle HorizontalAlign="Center" />
            <HeaderStyle VerticalAlign="Middle" HorizontalAlign="Center" Font-Bold="False" Height="30px" />

            <RowStyle HorizontalAlign="Center" VerticalAlign="Middle" Height="20px" />
        </asp:GridView>

This are my functions:

     protected void gvDeslocFinal_Sorting(object sender, GridViewSortEventArgs e)
        {
            if (gvDeslocFinal.EditIndex >= 0)
                return;

            string[] values = lbSortColumn.Text.Split(' ');
            if (values[0] == e.SortExpression)
            {
                if (values[1] != null && values[1] == "ASC")
                    lbSortColumn.Text = e.SortExpression + " DESC";
                else
                    lbSortColumn.Text = e.SortExpression + " ASC";
            }
            else
            {
                lbSortColumn.Text = e.SortExpression + " ASC";
            }


        }


 protected void gvDeslocFinal_Sorted(object sender, EventArgs e)
        {
            if (gvDeslocFinal.EditIndex >= 0)
                return;
            BindGrid();
        }

Answer 1

In the code snippet you pasted, you don't show your Column definitions for me to confirm, but this is probably your problem:

If you set AutoGenerateColumns=false, then you must define your columns, and in those Column definitions you must set the SortExpression property. E.g....

<Columns>
    <asp:BoundField HeaderText="Name" DataField="itemName" SortExpression="itemName"/>
    ...
</Columns>