Drawing a CGGradient in Monotouch

gistfile1.cs

var bounds = Bounds;
var context = UIGraphics.GetCurrentContext ();

// Gradient using CGGradient
PointF start = new PointF (0.0f, 0.0f);
PointF end = new PointF (0.0f, bounds.Height-(bounds.Height*0.20f));
CGGradient gradient;
using (var rgb = CGColorSpace.CreateDeviceRGB ()) {
  float[] color1 = new float[] { 0.0f, 0.0f, 0.0f, 0.0f }; // Black Clear
  float[] color2 = new float[] { 0.0f, 0.0f, 0.0f, 1.0f }; // Black 
  float[] colors = new float[color1.Length + color2.Length];
  Array.Copy (color1, colors, color1.Length);
  Array.Copy (color2, 0, colors, color1.Length, color2.Length);
  gradient = new CGGradient (rgb, colors, null);
}
context.DrawLinearGradient (gradient, start, end, CGGradientDrawingOptions.DrawsAfterEndLocation);