/// <summary>
	/// 生成二维码方法（复杂）
	/// </summary>
	/// <param name="strData">要生成的文字或者数字，支持中文。如： "15377541070 上海 Akon_Coder</param>
	/// <param name="qrEncoding">三种尺寸：BYTE ，ALPHA_NUMERIC，NUMERIC</param>
	/// <param name="level">大小：L M Q H</param>
	/// <param name="version">版本：如 8</param>
	/// <param name="scale">比例：如 4</param>
	/// <returns></returns>
	public static string CreateCode_Choose(string strData, string qrEncoding, string level, int version, int scale)
	{
		var qrCodeEncoder = new QRCodeEncoder();
		string encoding = qrEncoding;
		switch (encoding)
		{
			case "Byte":
				qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
				break;
			case "AlphaNumeric":
				qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;
				break;
			case "Numeric":
				qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.NUMERIC;
				break;
			default:
				qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
				break;
		}

		qrCodeEncoder.QRCodeScale = scale;
		qrCodeEncoder.QRCodeVersion = version;
		switch (level)
		{
			case "L":
				qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
				break;
			case "M":
				qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
				break;
			case "Q":
				qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.Q;
				break;
			default:
				qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.H;
				break;
		}
		//文字生成图片
		Image image = qrCodeEncoder.Encode(strData);
		var filename = DateTime.Now.ToString("yyyymmddhhmmssfff") + ".jpg";
		var filepath = AppDomain.CurrentDomain.BaseDirectory + @"\UploadPic\" + filename;
		var fs = new FileStream(filepath, FileMode.OpenOrCreate, FileAccess.Write);
		image.Save(fs, System.Drawing.Imaging.ImageFormat.Jpeg);
		fs.Close();
		image.Dispose();
		return filepath;
	}