Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Xceed.Grid.Viewers
Imports Xceed.Grid
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.IO 

Class PaintingViewer
   Inherits CellViewerManager

  Shared Sub New()
     Dim stream As Stream = GetType(PaintingViewer).Assembly.GetManifestResourceStream("Xceed.Grid.Samples.Favorites.PNG") 

     ' We clone the bitmap so that exceptions do not occur when the source stream is disposed of.    
     Dim image As New Bitmap( New Bitmap( stream ), New Size( 16, 16 ) )

     PaintingViewer.ValueImage = image 

     stream.Dispose()
  End Sub 

   Public Sub New()
     MyBase.New()
  End Sub 

   Protected Overrides Sub PaintCellBackground( ByVal cell As Cell, _
                                                ByVal e As GridPaintEventArgs, _
                                                ByRef handled As Boolean )
     Dim quantity As Single = 0 

     If( ( Not cell.Value Is Nothing ) And ( Not cell.Value Is DBNull.Value ) And _
                                           ( Not cell.Value Is cell.NullValue ) ) Then
       quantity = CType( Convert.ChangeType( cell.Value, GetType( Single ) ), Single )
     End If    

     Dim x As Integer = e.DisplayRectangle.X
     Dim y As Integer = e.DisplayRectangle.Y + ( e.DisplayRectangle.Height - PaintingViewer.ValueImage.Height ) / 2

     Dim imageHeight As Integer = PaintingViewer.ValueImage.Height
     Dim i As Integer 

     For i = 1 To quantity Step 1
       e.Graphics.DrawImage( PaintingViewer.ValueImage, x, y )
       x += PaintingViewer.ValueImage.Width
     Next i 

     ' Notify the cell that its background has been painted by the CellViewerManager.
     handled = True
  End Sub 

   Protected Overrides Sub PaintCellForeground( ByVal cell As Cell, _
                                          ByVal e As GridPaintEventArgs, ByRef handled As Boolean )

     ' Notify the cell that its foreground has been painted by the CellViewerManager.
     handled = True
  End Sub 

   Protected Overrides Function GetFittedHeightCore( ByVal cell As Cell, _
                                                     ByVal mode As AutoHeightMode, _
                                                     ByVal cellDisplayWidth As Integer, _
                                                     ByVal graphics As Graphics, _
                                                     ByVal printing As Boolean ) As Integer
     Return PaintingViewer.ValueImage.Height + 2
  End Function 

   Private Shared ValueImage As Image
End Class

using System;
using System.Collections.Generic;
using System.Text;
using Xceed.Grid.Viewers;
using Xceed.Grid;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.IO;

namespace WindowsApplication29
{
   class PaintingViewer : CellViewerManager
   {
    static PaintingViewer()
    {
       using( Stream stream = typeof( PaintingViewer ).Assembly.GetManifestResourceStream( "Xceed.Grid.Samples.Favorites.PNG" ) )
       {
        // We clone the bitmap so that exceptions do not occur in the case where the source stream
        // is disposed of.     
        Bitmap image = new Bitmap( new Bitmap( stream ), new Size( 16, 16 ) );
        PaintingViewer.ValueImage = image;
       }
    }    

    public PaintingViewer()
       : base()
    {
    } 

     protected override void PaintCellBackground( Cell cell, GridPaintEventArgs e, ref bool handled )
    {
       float quantity = 0; 

       if( ( cell.Value != null ) && ( cell.Value != DBNull.Value ) &&
                                     ( cell.Value != cell.NullValue ) )

        quantity = ( float )Convert.ChangeType( cell.Value, typeof( float ) ); 

        int x = e.DisplayRectangle.X;
        int y = e.DisplayRectangle.Y +
                     ( ( e.DisplayRectangle.Height - PaintingViewer.ValueImage.Height ) / 2 );

        int imageHeight = PaintingViewer.ValueImage.Height;

        for( int i = 1; i <= quantity; i++ )
        {
          e.Graphics.DrawImage( PaintingViewer.ValueImage, x, y );
          x += PaintingViewer.ValueImage.Width;
        }      

        // Notify the cell that its background has been painted by the CellViewerManager.
        handled = true;
    }    

     protected override void PaintCellForeground( Cell cell, GridPaintEventArgs e, ref bool handled )
    {
       // Notify the cell that its foreground has been painted by the CellViewerManager.
       handled = true;
    } 

     protected override int GetFittedHeightCore( Cell cell, 
                                                AutoHeightMode mode, 
                                                int cellDisplayWidth, 
                                                Graphics graphics, bool printing )
    {
       return PaintingViewer.ValueImage.Height + 2;
    } 

    static private Image ValueImage;     
   }
}