C# winform點選生成二維碼
阿新 • • 發佈:2019-01-09
C# winform 新手例項:點選生成二維碼
效果圖如下:
部分程式碼:
//button點選事件
private void button1_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("請輸入要生成的二維碼!");
return;
}
GenByZXingNet(textBox1.Text);
}
//生成二維碼圖片的函式
private Bitmap GenByZXingNet(string msg)
{
BarcodeWriter writer = new BarcodeWriter();
writer.Format = BarcodeFormat.QR_CODE;
writer.Options.Hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");//編碼問題
writer.Options.Hints.Add(EncodeHintType.ERROR_CORRECTION, ZXing.QrCode.Internal.ErrorCorrectionLevel.H);
const int codeSizeInPixels = 240; //設定圖片長寬
writer.Options .Height = writer.Options.Width = codeSizeInPixels;
writer.Options.Margin = 1;//設定邊框
ZXing.Common.BitMatrix bm = writer.Encode(msg);
Bitmap img = writer.Write(bm);
pictureBox1.Image = img;
return img;
}
//若需要開啟exe默認出現一張二維碼,先給textbox初始值,然後新增函式
private void Form1_Load (object sender, EventArgs e)
{
button1_Click(null,null);
}