Multi-color linear gradient in WinForms

Question

How to create multi-color linear gradient in WinForms? System.Drawing.Drawing2D.LinearGradientBrush allows only two colors.

Answer 1

same answer as here: Multi-color diagonal gradient in winforms Multi-color diagonal gradient in winforms

Here is a little example

void MainFormPaint(object sender, PaintEventArgs e) {   LinearGradientBrush br = new LinearGradientBrush(this.ClientRectangle, Color.Black, Color.Black, 0 , false);   ColorBlend cb = new ColorBlend();   cb.Positions = new[] {0, 1/6f, 2/6f, 3/6f, 4/6f, 5/6f, 1};   cb.Colors = new[] {Color.Red, Color.Orange, Color.Yellow, Color.Green, Color.Blue, Color.Indigo, Color.Violet};   br.InterpolationColors= cb;   // rotate   br.RotateTransform(45);   // paint   e.Graphics.FillRectangle(br, this.ClientRectangle); } 

here is the result

hope this helps