2D Graphics C#

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  4. Two-Point Linear Gradient Brush
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
   
class TwoPointLinearGradientBrush: Form
{
     public static void Main()
     {
          Application.Run(new TwoPointLinearGradientBrush());
     }
     TwoPointLinearGradientBrush()
     {
          ResizeRedraw = true; 
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }      
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          LinearGradientBrush lgbrush = 
               new LinearGradientBrush(
                         new Point(cx / 4, cy / 4), 
                         new Point(3 * cx / 4, 3 * cy / 4),
                         Color.White, Color.Black);
   
          grfx.FillRectangle(lgbrush, 0, 0, cx, cy);
     }
}