WPF C# Tutorial

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="Microsoft.Samples.Graphics.RectangleExample"
    WindowTitle="Example">
  
  Corner radius of 10 (X) and 25 (Y).
                   Width="100" Height="60" Margin="5"  HorizontalAlignment="Left">