复制代码 代码如下:
private void button1_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(this.textBox1.Text.Trim()))
{
MessageBox.Show("请输入需要转换的信息！");
return;
}

string content = textBox1.Text;

Hashtable hints= new Hashtable();
hints.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);//纠错级别
hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");//编码格式

ByteMatrix byteMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, 300, 300, hints);
Bitmap bitmap = toBitmap(byteMatrix);
pictureBox1.Image = bitmap;

SaveFileDialog sFD = new SaveFileDialog();
sFD.Filter = "*.png|*.png";
sFD.AddExtension = true;
try
{
if (sFD.ShowDialog() == DialogResult.OK)
{
writeToFile(byteMatrix, System.Drawing.Imaging.ImageFormat.Png, sFD.FileName);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

}

public static void writeToFile(ByteMatrix matrix, System.Drawing.Imaging.ImageFormat format, string file)
{
System.Drawing.Imaging.EncoderParameters eps = new System.Drawing.Imaging.EncoderParameters();
eps.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);
Bitmap bmap = toBitmap(matrix);
bmap.Save(file, format);
}
public static Bitmap toBitmap(ByteMatrix matrix)
{
int width = matrix.Width;
int height = matrix.Height;
Bitmap bmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
bmap.SetPixel(x, y, matrix.get_Renamed(x, y) != -1 ? ColorTranslator.FromHtml("Purple") : ColorTranslator.FromHtml("0xFFFFFFFF"));//可以自定义颜色和背景色
}
}

return bmap;
}