引用nuget包

QRCoder-ImageSharp

        /// <summary>/// 生成二维码/// </summary>/// <param name="text">内容</param>/// <param name="width">宽度</param>/// <param name="height">高度</param>/// <returns>Bitmap对象</returns>public Image GenerateQRCode(string text, int width, int height){using QRCodeGenerator qrGenerator = new QRCodeGenerator();using QRCodeData qrCodeData = qrGenerator.CreateQrCode(text, QRCodeGenerator.ECCLevel.Q);using QRCoder.BitmapByteQRCode bitmapByteQRCode = new BitmapByteQRCode(qrCodeData);var datas = bitmapByteQRCode.GetGraphic(5, "#000000", "#ffffff");Image image = Image.Load(datas);image.Mutate(ctx =>{ctx.Resize(width, height);});return image;}/// <summary>/// 生成带Logo的二维码/// </summary>/// <param name="text">内容</param>/// <param name="width">宽度</param>/// <param name="height">高度</param>/// <param name="logoImage">Logo</param>/// <returns>Bitmap对象</returns>public Image GenerateQRCodeWithLogo(string text, int width, int height, Image logoImage){var qrCodeImage = GenerateQRCode(text, width, height);// 计算插入 logo 的位置int x = (width - logoImage.Width) / 2;int y = (height - logoImage.Width) / 2;qrCodeImage.Mutate(ctx => {ctx.DrawImage(logoImage, new Point(x, y), 1);});return qrCodeImage;}