سورس Screen capture در سی شارپ

[CSHARP]
using System;
using System.Drawing;
using System.Windows.Forms;

public class ScreenCaptureByCopyFromScreen : Form
{
public ScreenCaptureByCopyFromScreen()
{
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.cmdCapture = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pictureBox1.Location = new System.Drawing.Point(12, 12);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(271, 249);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//
// cmdCapture
//
this.cmdCapture.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.cmdCapture.Location = new System.Drawing.Point(109, 276);
this.cmdCapture.Name = "cmdCapture";
this.cmdCapture.Size = new System.Drawing.Size(78, 23);
this.cmdCapture.TabIndex = 1;
this.cmdCapture.Text = "Capture";
this.cmdCapture.UseVisualStyleBackColor = true;
this.cmdCapture.Click += new System.EventHandler(this.cmdCapture_Click);
//
// ScreenCaptureByCopyFromScreen
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(295, 311);
this.Controls.Add(this.cmdCapture);
this.Controls.Add(this.pictureBox1);
this.Text = "Screen Capture";
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
}

private void cmdCapture_Click(object sender, EventArgs e)
{
    Bitmap screen = new Bitmap(Screen.PrimaryScreen.Bounds.Width,Screen.PrimaryScreen.Bounds.Height);
    
    Graphics g = Graphics.FromImage(screen);
    g.CopyFromScreen(0, 0, 0, 0, screen.Size);

    pictureBox1.Image = screen;
}
[STAThread]
static void Main()
{
    Application.EnableVisualStyles();
    Application.SetCompatibleTextRenderingDefault(false);
    Application.Run(new ScreenCaptureByCopyFromScreen());
}
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button cmdCapture;

}
[/CSHARP]