Csharp/CSharp Tutorial/2D/LinearGradientBrush

Brush Example for filling shapes

<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;

 class Form1 : Form
 {
   public Form1()
   {
     InitializeComponent();
   }
   protected override void OnPaint(PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     g.FillRectangle(Brushes.White, ClientRectangle);
     g.FillRectangle(Brushes.Red, new Rectangle(10, 10, 50, 50));
     Brush linearGradientBrush = new LinearGradientBrush(
       new Rectangle(10, 60, 50, 50), Color.Blue, Color.White, 45);
     g.FillRectangle(linearGradientBrush, new Rectangle(10, 60, 50, 50));
     linearGradientBrush.Dispose();
     g.FillEllipse(Brushes.Aquamarine, new Rectangle(60, 20, 50, 30));
     g.FillPie(Brushes.Chartreuse, new Rectangle(60, 60, 50, 50), 90, 210);
     g.FillPolygon(Brushes.BlueViolet, new Point[] {
                               new Point(110, 10),
                               new Point(150, 10),
                               new Point(160, 40),
                               new Point(120, 20),
                               new Point(120, 60),
     });
   }
 
   private void InitializeComponent()
   {
   }
   [STAThread]
   static void Main()
   {
     Application.EnableVisualStyles();
     Application.Run(new Form1());
   }
 }</source>

LinearGradientBrush and LinearGradientMode

<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class LinearGradientBrushMode : System.Windows.Forms.Form {

 private System.ruponentModel.Container components;
 public LinearGradientBrushMode()
 {
   InitializeComponent();
 }
 protected override void Dispose( bool disposing )
 {
   if( disposing )
   {
     if (components != null) 
     {
       components.Dispose();
     }
   }
   base.Dispose( disposing );
 }

 private void InitializeComponent()
 {
   this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
   this.ClientSize = new System.Drawing.Size(292, 273);
   this.Paint += new System.Windows.Forms.PaintEventHandler(this.LinearGradientBrushMode_Paint);
 }
 [STAThread]
 static void Main() 
 {
   Application.Run(new LinearGradientBrushMode());
 }
 private void LinearGradientBrushMode_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
 {
   Graphics g = e.Graphics;
   Rectangle r = new Rectangle(10, 10, 100, 100);
   LinearGradientBrush theBrush = null;
   int yOffSet = 10;
   Array obj = Enum.GetValues(typeof(LinearGradientMode));
   for(int x = 0; x < obj.Length; x++)
   {
     LinearGradientMode temp = (LinearGradientMode)obj.GetValue(x);
     theBrush = new LinearGradientBrush(r, Color.GreenYellow, Color.Blue, temp);      
     
     g.DrawString(temp.ToString(), new Font("Times New Roman", 10), new SolidBrush(Color.Black), 0, yOffSet);
     g. FillRectangle(theBrush, 150, yOffSet, 200, 50);
     yOffSet += 80;
   }
 }

}</source>