Draw shapes to the bitmap in memory : Bitmap « 2D Graphics « C# / C Sharp

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C# / C Sharp » 2D Graphics » Bitmap Screenshots  Draw shapes to the bitmap in memory     using System;   using System.Drawing;   using System.Drawing.Drawing2D;   using System.Collections;   using System.ComponentModel;   using System.Windows.Forms;   using System.Data;   using System.Drawing.Imaging;   public class Form1 : System.Windows.Forms.Form   {     public Form1()     {       InitializeComponent();     }     private void InitializeComponent()     {       this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);       this.ClientSize = new System.Drawing.Size(292, 273);       this.Text = "";       this.Resize += new System.EventHandler(this.Form1_Resize);       this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);     }     static void Main()      {       Application.Run(new Form1());     }     private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)     {             Graphics gForm = e.Graphics;       gForm.FillRectangle(Brushes.White, this.ClientRectangle);       // Create a Bitmap image in memory and set its CompositingMode       Bitmap bmp = new Bitmap(260, 260, PixelFormat.Format32bppArgb);       Graphics gBmp = Graphics.FromImage(bmp);       gBmp.CompositingMode = CompositingMode.SourceCopy;       // draw a red circle to the bitmap in memory       Color red = Color.FromArgb(0x60, 0xff, 0, 0);       Brush redBrush = new SolidBrush(red);       gBmp.FillEllipse(redBrush, 70, 70, 160, 160);       // draw a green rectangle to the bitmap in memory       Color green = Color.FromArgb(0x40, 0, 0xff, 0);       Brush greenBrush = new SolidBrush(green);       gBmp.FillRectangle(greenBrush, 10, 10, 140, 140);              // draw the bitmap on our window       gForm.DrawImage(bmp, 20, 20, bmp.Width, bmp.Height);       bmp.Dispose();       gBmp.Dispose();       redBrush.Dispose();       greenBrush.Dispose();     }     private void Form1_Resize(object sender, System.EventArgs e)     {       Invalidate();     }   }                          Related examples in the same category 1. Draw on an Bitmap 2. Resize the Bitmap using the lowest quality interpolation mode 3. Resize the Bitmap using the highest quality interpolation mode 4. Create Graphics object From Image 5. Bitmap.SetResolution 6. Bitmap property: Height, Physical Dimension, width, raw format and size 7. Create your own BitMap 8. new Bitmap(bitmap, size) 9. Read Bitmap Size by using BinaryReader 10. Bitmap.HorizontalResolution 11. Use a color matrix to change the color properties of the image 12. Create a Bitmap image in memory and set its CompositingMode 13. Create a red color with an alpha component then draw a red circle to the bitmap in memory 14. Create a green color with an alpha component then draw a green rectangle to the bitmap in memory 15. write the pixel information to the console window 16. Double buffer with Bitmap 17. Draw an array of images 18. Bit operation with PixelFormat.Alpha 19. PixelFormat.DontCare 20. Scale Bitmap By Percent