C#

namespace Freepour.Studio.Controls.Grid
{

    public class InventoryWorksheetGridImageColumn : GridImageColumn
    {
.....

 protected override void DrawCell(Divelements.SandGrid.Rendering.RenderingContext context, GridRow row, object value, Font rowFont, Image image, Rectangle bounds, bool selected, Divelements.SandGrid.Rendering.TextFormattingInformation textFormat, Color foreColor)
        {
            float x = (2) + bounds.Left;
            float y = (1) + bounds.Top;
            float width = 16.0F;
            float height = 16.0F;

            object O = row.DataItem;
            DownloadAudit D = O as DownloadAudit;

            if (D.Flags == 1)
            {
                context.Graphics.DrawImage(ExclusionImage, x, y, width, height);
            }

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim mTable As New DataTable
        Dim mTable2 As New InheritedTable
        mTable.Columns.Add("Col1", System.Type.GetType("System.String"))
        mTable.Columns.Add("Col2", System.Type.GetType("System.String"))
        Dim Row As DataRow = mTable.NewRow
        Row(0) = "A" : Row(1) = "B" : mTable.Rows.Add(Row)
        Row = mTable.NewRow
        Row(0) = "C" : Row(1) = "D" : mTable.Rows.Add(Row)
        mTable2 = DirectCast(mTable.Clone, InheritedTable).Copy
    End Sub

End Class
Public Class InheritedTable
    Inherits System.Data.DataTable
    Private Sub DoSomething()
        'Any code.
    End Sub
End Class