Sub RemoveColumns( _
   ByVal column As Integer, _
   ByVal columnCount As Integer _
) 

Dim instance As IRangeSupport
Dim column As Integer
Dim columnCount As Integer
 
instance.RemoveColumns(column, columnCount)

void RemoveColumns( 
   int column,
   int columnCount
)

private void Button1Click(object sender, System.EventArgs e)
{
    FarPoint.Web.Spread.Model.IRangeSupport irs;
    irs = (FarPoint.Web.Spread.Model.IRangeSupport)FpSpread1.ActiveSheetView.DataModel;
    irs.RemoveColumns(1, 3); 
    irs.RemoveRows(1, 3);
}

Private Sub Button1Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim irs As FarPoint.Web.Spread.Model.IRangeSupport
    irs = FpSpread1.ActiveSheetView.DataModel
    irs.RemoveColumns(1, 3) 
    irs.RemoveRows(1, 3)
End Sub