Round line WPF code behind

WPF > Line 

Line line = new Line

{
 Stroke = Brushes.Blue,

 StrokeThickness = 18,

 StrokeStartLineCap = PenLineCap.Round,

 StrokeEndLineCap = PenLineCap.Round,

 Height= 50,

 X1 = 50,

 X2 = 100,

 Y1 = 10,

 Y2 = 10

};

canvas.Children.Add(line);