/// <summary>
/// 生成条形码
/// </summary>
private void button1_Click(object sender, EventArgs e)
{
lbshow.Text = "";
Regex rg = new Regex("^[0-9]{13}$");
if (!rg.IsMatch(txtMsg.Text))
{
lbshow.Text = "请输入13位数字！";
return;
}
try
{
//本例子采用EAN_13编码
com.google.zxing.MultiFormatWriter mutiWriter = new com.google.zxing.MultiFormatWriter();
ByteMatrix bm = mutiWriter.encode(txtMsg.Text, com.google.zxing.BarcodeFormat.EAN_13, 363, 150);
Bitmap img = bm.ToBitmap();
pictureBox1.Image = img;
//自动保存图片到当前目录
string filename = GetSaveImagePath("EAN13");
img.Save(filename, System.Drawing.Imaging.ImageFormat.Jpeg);
lbshow.Text = "图片已保存到：" + filename;
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
}
/// <summary>
/// 生成二维码
/// </summary>
private void button2_Click(object sender, EventArgs e)
{
lbshow.Text = "";
if (string.IsNullOrEmpty(txtMsg.Text))
{
lbshow.Text = "请输入内容！";
return;
}
try
{
//构造二维码写码器
com.google.zxing.MultiFormatWriter mutiWriter = new com.google.zxing.MultiFormatWriter();
ByteMatrix bm = mutiWriter.encode(txtMsg.Text, com.google.zxing.BarcodeFormat.QR_CODE, 300, 300);
Bitmap img = bm.ToBitmap();
pictureBox1.Image = img;
//自动保存图片到当前目录
string filename = GetSaveImagePath("QR");
img.Save(filename, System.Drawing.Imaging.ImageFormat.Jpeg);
lbshow.Text = "图片已保存到：" + filename;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// 生成中间带图片的二维码
/// </summary>
private void button5_Click(object sender, EventArgs e)
{
lbshow.Text = "";
if (string.IsNullOrEmpty(txtMsg.Text))
{
lbshow.Text = "请输入内容！";
return;
}
try
{
//构造二维码写码器
com.google.zxing.MultiFormatWriter mutiWriter = new com.google.zxing.MultiFormatWriter();
Hashtable hint = new Hashtable();
hint.Add(com.google.zxing.EncodeHintType.CHARACTER_SET, "UTF-8");
hint.Add(com.google.zxing.EncodeHintType.ERROR_CORRECTION,
com.google.zxing.qrcode.decoder.ErrorCorrectionLevel.H);
//生成二维码
ByteMatrix bm = mutiWriter.encode(txtMsg.Text, com.google.zxing.BarcodeFormat.QR_CODE, 300, 300, hint);
Bitmap img = bm.ToBitmap();
//要插入到二维码中的图片
Image middlImg = QRMiddleImg.Image;
//获取二维码实际尺寸（去掉二维码两边空白后的实际尺寸）
System.Drawing.Size realSize = mutiWriter.GetEncodeSize(txtMsg.Text,
com.google.zxing.BarcodeFormat.QR_CODE, 300, 300);
//计算插入图片的大小和位置
int middleImgW = Math.Min((int)(realSize.Width / 3.5), middlImg.Width);
int middleImgH = Math.Min((int)(realSize.Height / 3.5), middlImg.Height);
int middleImgL = (img.Width - middleImgW) / 2;
int middleImgT = (img.Height - middleImgH) / 2;
//将img转换成bmp格式，否则后面无法创建 Graphics对象
Bitmap bmpimg = new Bitmap(img.Width, img.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics g = Graphics.FromImage(bmpimg))
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(img, 0, 0);
}
//在二维码中插入图片
System.Drawing.Graphics MyGraphic = System.Drawing.Graphics.FromImage(bmpimg);
//白底
MyGraphic.FillRectangle(Brushes.White, middleImgL, middleImgT, middleImgW, middleImgH);
MyGraphic.DrawImage(middlImg, middleImgL, middleImgT, middleImgW, middleImgH);
pictureBox1.Image = bmpimg;
//自动保存图片到当前目录
string filename = GetSaveImagePath("QR");
bmpimg.Save(filename, System.Drawing.Imaging.ImageFormat.Jpeg);
lbshow.Text = "图片已保存到：" + filename;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
