namespace WinQRCode 
{ 
 partial class Form1 
 { 
  /// <summary> 
  /// 必需的设计器变量。 
  /// </summary> 
  private System.ComponentModel.IContainer components = null; 
 
  /// <summary> 
  /// 清理所有正在使用的资源。 
  /// </summary> 
  /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> 
  protected override void Dispose(bool disposing) 
  { 
   if (disposing && (components != null)) 
   { 
    components.Dispose(); 
   } 
   base.Dispose(disposing); 
  } 
 
  #region Windows 窗体设计器生成的代码 
 
  /// <summary> 
  /// 设计器支持所需的方法 - 不要 
  /// 使用代码编辑器修改此方法的内容。 
  /// </summary> 
  private void InitializeComponent() 
  { 
   this.button1 = new System.Windows.Forms.Button(); 
   this.button2 = new System.Windows.Forms.Button(); 
   this.pictureBox1 = new System.Windows.Forms.PictureBox(); 
   this.label1 = new System.Windows.Forms.Label(); 
   this.textBox1 = new System.Windows.Forms.TextBox(); 
   this.label2 = new System.Windows.Forms.Label(); 
   this.lbl解码信息 = new System.Windows.Forms.Label(); 
   ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit(); 
   this.SuspendLayout(); 
   // 
   // button1 
   // 
   this.button1.Location = new System.Drawing.Point(446, 31); 
   this.button1.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5); 
   this.button1.Name = "button1"; 
   this.button1.Size = new System.Drawing.Size(103, 37); 
   this.button1.TabIndex = 0; 
   this.button1.Text = "编码"; 
   this.button1.UseVisualStyleBackColor = true; 
   this.button1.Click += new System.EventHandler(this.button1_Click); 
   // 
   // button2 
   // 
   this.button2.Location = new System.Drawing.Point(446, 81); 
   this.button2.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5); 
   this.button2.Name = "button2"; 
   this.button2.Size = new System.Drawing.Size(103, 37); 
   this.button2.TabIndex = 1; 
   this.button2.Text = "解码"; 
   this.button2.UseVisualStyleBackColor = true; 
   this.button2.Click += new System.EventHandler(this.button2_Click); 
   // 
   // pictureBox1 
   // 
   this.pictureBox1.Location = new System.Drawing.Point(23, 117); 
   this.pictureBox1.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5); 
   this.pictureBox1.Name = "pictureBox1"; 
   this.pictureBox1.Size = new System.Drawing.Size(279, 253); 
   this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage; 
   this.pictureBox1.TabIndex = 2; 
   this.pictureBox1.TabStop = false; 
   // 
   // label1 
   // 
   this.label1.AutoSize = true; 
   this.label1.Location = new System.Drawing.Point(18, 39); 
   this.label1.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0); 
   this.label1.Name = "label1"; 
   this.label1.Size = new System.Drawing.Size(69, 25); 
   this.label1.TabIndex = 3; 
   this.label1.Text = "信息："; 
   // 
   // textBox1 
   // 
   this.textBox1.Location = new System.Drawing.Point(95, 37); 
   this.textBox1.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5); 
   this.textBox1.Name = "textBox1"; 
   this.textBox1.Size = new System.Drawing.Size(333, 31); 
   this.textBox1.TabIndex = 4; 
   // 
   // label2 
   // 
   this.label2.AutoSize = true; 
   this.label2.Location = new System.Drawing.Point(18, 81); 
   this.label2.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0); 
   this.label2.Name = "label2"; 
   this.label2.Size = new System.Drawing.Size(88, 25); 
   this.label2.TabIndex = 5; 
   this.label2.Text = "二维码："; 
   // 
   // lbl解码信息 
   // 
   this.lbl解码信息.AutoSize = true; 
   this.lbl解码信息.Location = new System.Drawing.Point(101, 81); 
   this.lbl解码信息.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0); 
   this.lbl解码信息.Name = "lbl解码信息"; 
   this.lbl解码信息.Size = new System.Drawing.Size(0, 25); 
   this.lbl解码信息.TabIndex = 6; 
   // 
   // Form1 
   // 
   this.AutoScaleDimensions = new System.Drawing.SizeF(11F, 24F); 
   this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
   this.ClientSize = new System.Drawing.Size(572, 384); 
   this.Controls.Add(this.lbl解码信息); 
   this.Controls.Add(this.label2); 
   this.Controls.Add(this.textBox1); 
   this.Controls.Add(this.label1); 
   this.Controls.Add(this.pictureBox1); 
   this.Controls.Add(this.button2); 
   this.Controls.Add(this.button1); 
   this.Font = new System.Drawing.Font("微软雅黑", 10.8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134))); 
   this.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5); 
   this.Name = "Form1"; 
   this.Text = "二维码"; 
   ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit(); 
   this.ResumeLayout(false); 
   this.PerformLayout(); 
 
  } 
 
  #endregion 
 
  private System.Windows.Forms.Button button1; 
  private System.Windows.Forms.Button button2; 
  private System.Windows.Forms.PictureBox pictureBox1; 
  private System.Windows.Forms.Label label1; 
  private System.Windows.Forms.TextBox textBox1; 
  private System.Windows.Forms.Label label2; 
  private System.Windows.Forms.Label lbl解码信息; 
 } 
} 

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
 
namespace WinQRCode 
{ 
 using ThoughtWorks.QRCode.Codec; 
 using ThoughtWorks.QRCode.Codec.Data; 
 using ThoughtWorks.QRCode.Codec.Util; 
 using System.IO; 
 using PdfToImage; 
 public partial class Form1 : Form 
 { 
  public Form1() 
  { 
   InitializeComponent(); 
  } 
  /// <summary> 
  /// 编码 
  /// </summary> 
  /// <param name="sender"></param> 
  /// <param name="e"></param> 
  private void button1_Click(object sender, EventArgs e) 
  { 
   if (this.textBox1.Text != "") 
   { 
    Cursor.Current = Cursors.WaitCursor; 
    if (textBox1.Text.Trim() == String.Empty) 
    { 
     MessageBox.Show("不能为空."); 
     return; 
    } 
    QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();    
    qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE; 
    qrCodeEncoder.QRCodeScale = 4; 
    qrCodeEncoder.QRCodeVersion = 7;    
    qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;    
    System.Drawing.Image image; 
    String data = textBox1.Text; 
    //编码 
    image = qrCodeEncoder.Encode(data); 
    //图片显示 
    this.pictureBox1.Image = image; 
    Cursor.Current = Cursors.Default; 
 
   } 
  } 
  /// <summary> 
  /// 解码 
  /// </summary> 
  /// <param name="sender"></param> 
  /// <param name="e"></param> 
  private void button2_Click(object sender, EventArgs e) 
  { 
   Cursor.Current = Cursors.WaitCursor; 
   Bitmap b = this.pictureBox1.Image as Bitmap; 
   try 
   { 
    QRCodeDecoder decoder = new QRCodeDecoder(); 
    //解码 
    String decodedString = decoder.decode(new QRCodeBitmapImage(b)); 
    //显示解码信息 
    this.lbl解码信息.Text += decodedString ; 
   } 
   catch (Exception ex) 
   { 
    MessageBox.Show(ex.Message); 
   } 
   Cursor.Current = Cursors.Default; 
  } 
 
  private void Form1_Load(object sender, EventArgs e) 
  { 
 
  } 
 } 
}