WPF VB.Net

   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
   x:Class="Microsoft.Samples.Graphics.UsingImageBrush.TilingExample" >
  
          Grid.Row="6" Grid.Column="1"
      Width="200" Height="150"
      Stroke="LimeGreen" StrokeThickness="1" HorizontalAlignment="Left">
      
                  Viewport="0,0,25,25"
          ViewportUnits="Absolute"
          TileMode="Tile"
          AlignmentX="Left"
          AlignmentY="Top"
          ImageSource="c:\image.jpg" />