Csharp/CSharp Tutorial/GUI Windows Forms/Screen capture

Screen capture

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.ruponentModel.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.ruponentModel.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;
}