Public Function GetIndex( _
   ByVal row As Integer _
) As Integer

Dim instance As GroupDataModel
Dim row As Integer
Dim value As Integer
 
value = instance.GetIndex(row)

public int GetIndex( 
   int row
)

protected void Button1_Click(object sender, EventArgs e)
{
  FarPoint.Web.Spread.Model.GroupDataModel gm;
  if ((FpSpread1.ActiveSheetView.DataModel) is FarPoint.Web.Spread.Model.GroupDataModel)
  {
        gm = (FarPoint.Web.Spread.Model.GroupDataModel)FpSpread1.ActiveSheetView.DataModel;
        if ((gm.TargetModel) is FarPoint.Web.Spread.Model.IRangeSupport)
        {
                FarPoint.Web.Spread.Model.IRangeSupport im = (FarPoint.Web.Spread.Model.IRangeSupport)gm.TargetModel;
                int i;
                i = gm.GetIndex(2);
                String msg = i.ToString();
                Response.Write("alert('" + msg + "')");
        }
  }
}

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
  Dim gm As FarPoint.Web.Spread.Model.GroupDataModel
  If TypeOf (FpSpread1.ActiveSheetView.DataModel) Is FarPoint.Web.Spread.Model.GroupDataModel Then
        gm = FpSpread1.ActiveSheetView.DataModel
        If TypeOf (gm.TargetModel) Is FarPoint.Web.Spread.Model.IRangeSupport Then
                Dim im As FarPoint.Web.Spread.Model.IRangeSupport = gm.TargetModel
                Dim i As Integer
                i = gm.GetIndex(2)
                Dim msg As String = i.ToString()
                Response.Write("alert('" & msg & "')")
        End If
  End If
End Sub