Csharp/C Sharp by API/System.Drawing.Drawing2D/LinearGradientMode

LinearGradientMode.BackwardDiagonal

<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D; public class Form1 : System.Windows.Forms.Form {

   [STAThread]
   static void Main() {
       Application.Run(new Form1());
   }
   protected override void OnPaint(PaintEventArgs e) {
       Graphics g = e.Graphics;
       Font f = new Font(new FontFamily("Times New Roman"), 10);
       Brush fb = new SolidBrush(Color.Black);
       LinearGradientBrush lGB;  
       Color cR = Color.Red, cW = Color.White;
       int w = 100, h = 70;
       g.DrawString("Horizontal", f, fb, 10, 5);
       Rectangle rec = new Rectangle(10, 20, w, h);
       LinearGradientMode lGM = LinearGradientMode.Horizontal;
       lGB = new LinearGradientBrush(rec, cR, cW, lGM);
       g.FillRectangle(lGB, rec);
       g.DrawString("Vertical", f, fb, w + 20, 5);
       rec.Offset(w + 10, 0);
       lGM = LinearGradientMode.Vertical;
       lGB = new LinearGradientBrush(rec, cR, cW, lGM);
       g.FillRectangle(lGB, rec);
       g.DrawString("ForwardDiagonal", f, fb, 10, h + 25);
       rec.Offset(-w - 10, h + 20);
       lGM = LinearGradientMode.ForwardDiagonal;
       lGB = new LinearGradientBrush(rec, cR, cW, lGM);
       g.FillRectangle(lGB, rec);
       g.DrawString("BackwardDiagonal", f, fb, w + 20, h + 25);
       rec.Offset(w + 10, 0);
       lGM = LinearGradientMode.BackwardDiagonal;
       lGB = new LinearGradientBrush(rec, cR, cW, lGM);
       g.FillRectangle(lGB, rec);
       fb.Dispose();
       g.Dispose();
   }

}

 </source>

LinearGradientMode.ForwardDiagonal

<source lang="csharp"> /* Professional Windows GUI Programming Using C# by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,

  Zach Greenvoss, Shripad Kulkarni, Neil Whitlow

Publisher: Peer Information ISBN: 1861007663

• /

using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D; // LinearGradientBrush namespace LinGradient {

   /// <summary>
   /// Summary description for LinGradient.
   /// </summary>
   public class LinGradient : System.Windows.Forms.Form
   {
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.Container components = null;
       public LinGradient()
       {
           //
           // Required for Windows Form Designer support
           //
           InitializeComponent();
           this.Text = "LinearGradientMode";
           //
           // TODO: Add any constructor code after InitializeComponent call
           //
       }
       /// <summary>
       /// Clean up any resources being used.
       /// </summary>
       protected override void Dispose( bool disposing )
       {
           if( disposing )
           {
               if (components != null) 
               {
                   components.Dispose();
               }
           }
           base.Dispose( disposing );
       }
       #region Windows Form Designer generated code
       /// <summary>
       /// Required method for Designer support - do not modify
       /// the contents of this method with the code editor.
       /// </summary>
       private void InitializeComponent()
       {
           // 
           // LinGradient
           // 
           this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
           this.ClientSize = new System.Drawing.Size(256, 205);
           this.Name = "LinGradient";
           this.Text = "LinGradient";
       }
       #endregion
       /// <summary>
       /// The main entry point for the application.
       /// </summary>
       [STAThread]
       static void Main() 
       {
           Application.Run(new LinGradient());
       }
       protected override void OnPaint(PaintEventArgs e)
       {   
           Graphics g = e.Graphics;
           Font f = new Font(new FontFamily("Times New Roman"), 10);
           Brush fb = new SolidBrush(Color.Black);
           LinearGradientBrush lGB;  // namespace System.Drawing.Drawing2D;
           Color cR = Color.Red, cW = Color.White;
           int w = 100, h = 70;
           // Left upper rectangle:
           g.DrawString("Horizontal", f, fb, 10, 5);
           Rectangle rec = new Rectangle(10, 20, w, h);
           LinearGradientMode lGM = LinearGradientMode.Horizontal;
           lGB = new LinearGradientBrush(rec, cR, cW, lGM);
           g.FillRectangle(lGB, rec);
        
           // Right upper rectangle:
           g.DrawString("Vertical", f, fb, w + 20, 5);
           rec.Offset(w + 10, 0);
           lGM = LinearGradientMode.Vertical;
           lGB = new LinearGradientBrush(rec, cR, cW, lGM);
           g.FillRectangle(lGB, rec);
           // Left down rectangle:
           g.DrawString("ForwardDiagonal", f, fb, 10, h + 25);
           rec.Offset(-w - 10, h + 20);
           lGM = LinearGradientMode.ForwardDiagonal;
           lGB = new LinearGradientBrush(rec, cR, cW, lGM);
           g.FillRectangle(lGB, rec);
           // Right down rectangle:
           g.DrawString("BackwardDiagonal", f, fb, w + 20, h + 25);
           rec.Offset(w + 10, 0);
           lGM = LinearGradientMode.BackwardDiagonal;
           lGB = new LinearGradientBrush(rec, cR, cW, lGM);
           g.FillRectangle(lGB, rec);
           fb.Dispose();
           g.Dispose();
       }
   }

}

 </source>