Graphics 2 - Gradients & more advanced brushes - CSharp #4

Code:
SolidBrush:

 SolidBrush b = new SolidBrush(Color.Blue);

Or:

 Brush b = SystemBrushes.Control;

Or:

 Brush b = Brushes.Blue;

TextureBrush

 TextureBrush b = new TextureBrush(new Bitmap(@"PATH HERE", WrapMode.Tile);

HatchBrush

 HatchBrush b = new HatchBrush(HatchStyle.Cross, Color.Black);

LinearGradientBrush

 LinearGradientBrush b = new LinearGradientBrush(new Point(X1, Y1), new Point(X2, Y2), color1, color2);

PathGradientBrush

 PathGradientBrush b = new PathGradientBrush(new [] {new Point(X, Y), new Point(X, Y), ...})
 b.CenterPoint = new Point(X, Y);
 b.CenterColor = Color.Blue;
 b.SurroundColor = new [] {Color.Red, Color.Black, ....};

Don't forget to add this at the end to fill the form with your brush:

 e.Graphics.FillRectangle(b, e.ClipRectangle);

HatchStyles:

All HatchStyles available in C#

Source