How to Disable auto sorting in GridView.

Question

 This is my GridView I want disable auto sort in this. How can I do this. I set AllowSorting="false" but it is not working

 

<asp:GridView ID="GridView1" ShowFooter="true" runat="server" AutoGenerateColumns="False" EnableModelValidation="True" DataKeyNames="emb_id" Width="896px" OnRowCommand="GridView1_RowCommand" AllowSorting="false" >

 

<asp:TemplateField HeaderText = "?????? <br> <br>Profession" ItemStyle-Width="40">

<ItemTemplate>

<asp:Label ID="lblProfession" Text='<%# Eval("job_title_arabic") %>' runat="server" Width="120"/>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText = "??? <br> <br>Year" ItemStyle-Width="40">

<ItemTemplate>

<asp:Label ID="lblYear" Text='<%# Eval("visa_iss_date","{0:y}") %>' runat="server" Width="120"/>

</ItemTemplate>

</asp:TemplateField>

 

</asp:GridView> 

 

thanks