Turn a autoGenerate datgrid column visible property to false

I turned on the autogenerate dtagrid columns otherwise I need to create 3 different datagrid froms my sql statements.  I need to hide the second column in the datagrid which is the ID column of the table.  If I put in my statement this.

 myDataGrid.Columns(1).Visible = False

It gives me the follwoing error.
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

But if I take out it works fine, how can I hide the first autogenerated column of my statement.

Private Sub FillDatagrid()
        Dim UicId As String = ddlUic.SelectedValue

        sql = "Select af.intAssignedId as ID, uf.strTaskName as TaskName, uf.strProponent as Proponent, uf.strApprovalLevel as Approval, uf.strPriority as Priority, " _
                 & "Convert(varchar(12), af.dtAssigned, 106) as Date_Assigned, Convert(varchar(12), DateAdd(dd,  uf.strSusDays, af.dtAssigned), 106) as Suspense_Date, uf.strSMEContact as SME_Contact " _
                 & "from tblUnitFilter as uf INNER JOIN tblAssignUnitFilters as af on af.intFilterID = uf.intFilterID where af.intUnitMobId = " & UicId & " AND dtRemoved IS NULL AND " _
                 & "dtCompleted IS NULL"

        myDataTable = New DataTable
        myDataTable = getData(sql)

        myDataGrid.DataSource = myDataTable
        myDataGrid.DataBind()

        myDataGrid.Columns(1).Visible = False

    End Sub