【原】C# 二维码生成和解析

Csharp小记 2023-10-29 发布于江苏

展开全文

现如今二维码广泛应用，已经成为了生活中不可或缺的东西；所以我们日常的开发中，也肯定少不了对二维码的生成或者解析。

实现功能：

将字符串生成二维码和解析二维码图片

开发环境：

开发工具：Visual Studio 2013

.NET Framework版本：4.5

实现代码：

//需添加zxing.dll和zxing.presentation.dll到自己项目
//需引入命名空间using ZXing;using ZXing.Common;using ZXing.QrCode.Internal;
 //生成二维码 private void btnGenerate_Click(object sender, EventArgs e) {     if (string.IsNullOrWhiteSpace(textBox1.Text))     {         MessageBox.Show("请输入要生成的文本信息");         return;     }     BarcodeWriter barCodeWriter = new BarcodeWriter();     barCodeWriter.Format = BarcodeFormat.QR_CODE;     barCodeWriter.Options.Hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");     barCodeWriter.Options.Height = 230;     barCodeWriter.Options.Width = 230;     BitMatrix bm = barCodeWriter.Encode(textBox1.Text);     Bitmap img = barCodeWriter.Write(bm);     pictureBox1.Image = img; }
 //解析二维码 private void btnAnalysis_Click(object sender, EventArgs e) {     if (pictureBox1.Image == null)     {         MessageBox.Show("请先复制图片到图片框");         return;     }
     BarcodeReader reader = new BarcodeReader();     reader.Options.CharacterSet = "UTF-8";     Result result = reader.Decode((Bitmap)pictureBox1.Image);     textBox1.Text = result.Text; }
 //获取剪切板中的图片 private Image CopyImage() {     try     {         Image image = null;         IDataObject iData = Clipboard.GetDataObject();         if (iData.GetDataPresent(DataFormats.FileDrop))         {             object obj = iData.GetData(DataFormats.FileDrop);             image = Image.FromFile((obj as string[])[0].ToString());         }         else if (iData.GetDataPresent(DataFormats.Bitmap))         {             object obj = iData.GetData(DataFormats.Bitmap);             image = obj as Image;         }         return image;     }     catch { return null; }
 }
 //给予pictureBox1焦点 private void pictureBox1_Click(object sender, EventArgs e) {     pictureBox1.Focus(); }
 //ctrl+v复制到pictureBox1 private void pictureBox1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e) {     if (e.Control && e.KeyCode == Keys.V)     {         pictureBox1.Image = CopyImage();     } }