public void testForBits()
{
Assert.AreEqual(ErrorCorrectionLevel.M, ErrorCorrectionLevel.forBits(0));
Assert.AreEqual(ErrorCorrectionLevel.L, ErrorCorrectionLevel.forBits(1));
Assert.AreEqual(ErrorCorrectionLevel.H, ErrorCorrectionLevel.forBits(2));
Assert.AreEqual(ErrorCorrectionLevel.Q, ErrorCorrectionLevel.forBits(3));
}
private FormatInformation(int formatInfo)
{
// Bits 3,4
errorCorrectionLevel = ErrorCorrectionLevel.forBits((formatInfo >> 3) & 0x03);
// Bottom 3 bits
dataMask = (sbyte)(formatInfo & 0x07);
}
/// <summary>
/// 生成二维码
/// </summary>
/// <param name="content">内容文本</param>
/// <param name="size">图片尺寸（像素），0表示不设置</param>
/// <param name="margin">二维码的边距,图片尺寸大于0生效</param>
/// <param name="errorCorrection">纠错码等级</param>
/// <param name="characterSet">内容编码</param>
/// <returns></returns>
public static System.Drawing.Image EncodeQrCode(string content, int size = 10, int margin = 2, string errorCorrection = "L", string characterSet = "utf-8")
{
BarcodeWriter barCodeWriter = new BarcodeWriter();
barCodeWriter.Format = BarcodeFormat.QR_CODE;
QrCodeEncodingOptions options = new QrCodeEncodingOptions()
{
// DisableECI = true,
CharacterSet = characterSet, // 设置内容编码
// QrVersion = 8,
};
errorCorrection = errorCorrection.ToUpper();
IDictionary <string, int> dic = new Dictionary <string, int>()
{
{ "L", 1 },
{ "M", 0 },
{ "Q", 3 },
{ "H", 2 }
};
if (!dic.ContainsKey(errorCorrection))
{
errorCorrection = "L";
}
if (size != 0)
{
int s;
if (errorCorrection == "L" || errorCorrection == "M")
{
s = size * 27;
}
else
{
s = size * 31;
}
s += (margin - 1) * (size * 2);
options.Width = s;
options.Height = s;
options.Margin = margin; // 设置二维码的边距,单位不是固定像素
}
options.ErrorCorrection = ErrorCorrectionLevel.forBits(dic[errorCorrection]);
barCodeWriter.Options = options;
ZXing.Common.BitMatrix bm = barCodeWriter.Encode(content);
Bitmap result = barCodeWriter.Write(bm);
return(result);
}
public void testForBits()
{
Assert.AreEqual(ErrorCorrectionLevel.M, ErrorCorrectionLevel.forBits(0));
Assert.AreEqual(ErrorCorrectionLevel.L, ErrorCorrectionLevel.forBits(1));
Assert.AreEqual(ErrorCorrectionLevel.H, ErrorCorrectionLevel.forBits(2));
Assert.AreEqual(ErrorCorrectionLevel.Q, ErrorCorrectionLevel.forBits(3));
try
{
ErrorCorrectionLevel.forBits(4);
throw new AssertionException("Should have thrown an exception");
}
catch (ArgumentException)
{
// good
}
}
public void testBadECLevel()
{
ErrorCorrectionLevel.forBits(4);
throw new AssertionException("Should have thrown an exception");
}
