使用QRCode生成二维码

/// <summary>
/// 含有QR码的描述类和包装编码和渲染
/// </summary>
public class QRCodeHelper
{
/// <summary>
/// 获取二维码
/// </summary>
/// <param name="strContent">待编码的字符</param>
/// <param name="ms">输出流</param>
/// <param name="moduleSize">大小</param>
///<returns>True if the encoding succeeded, false if the content is empty or too large to fit in a QR code</returns>
public static bool GetQRCode(string strContent,MemoryStream ms, int moduleSize = )
{
ErrorCorrectionLevel Ecl = ErrorCorrectionLevel.M; //误差校正水平
string Content = strContent;//待编码内容
QuietZoneModules QuietZones = QuietZoneModules.Two; //空白区域
var encoder = new QrEncoder(Ecl);
QrCode qr;
if (encoder.TryEncode(Content, out qr))//对内容进行编码，并保存生成的矩阵
{
var render = new GraphicsRenderer(new FixedModuleSize(moduleSize, QuietZones));
render.WriteToStream(qr.Matrix, ImageFormat.Png, ms);
}
else
{
return false;
}
return true;
} }

using (var ms = new MemoryStream())
{
string strContent = "http://www.baidu.com";
QRCodeHelper.GetQRCode(strContent, ms, );
Response.ContentType = "image/Png";
Response.OutputStream.Write(ms.GetBuffer(), , (int)ms.Length);
Response.End();
}