Which Gridview property should be enabled to bind column when there is no column created inside gridview?

Answer:

Set AutoGenerateColumns to True. If we do not have columns i.e. TemplateField inside Gridview.In that case,we have to set AutoGenerateColumns property to True.By-default it's false.

For ex:-

<asp:GridView ID="grid_view_employee_details" AutoGenerateColumns = "True" runat="server" AllowPaging="true" PageSize="10">

</asp:GridView>

Whatever columns are there in the Select statement will bind in Gridview.