my datagrid won't sort

[kisslogicgoodbye]

I have a datagrid. Allow Sorting is checked. My Column headings are links. WHen I click them, the page flickers as if it is refreshing data but the data sort does not change. Can anyone help?

This is the code:
Protected Sub DataGrid1_SortCommand(ByVal source As Object, _
ByVal e As System.Web.UI.WebControls.DataGridSortCommandEventArgs) _
Handles DataGrid1.SortCommand
DataView1.Sort = e.SortExpression
DataGrid1.DataBind()
End Sub

This is my asp stuff:
<asp:datagrid id=DataGrid1 style=&quot;Z-INDEX: 101; LEFT: 21px; POSITION: absolute; TOP: 24px&quot; runat=&quot;server&quot; ForeColor=&quot;Black&quot; BorderColor=&quot;#999999&quot; BackColor=&quot;#CCCCCC&quot; AllowSorting=&quot;True&quot; OnSortCommand=&quot;DataGrid1_SortCommand&quot;