生成二维码

/// <summary>
/// 生成二维码
/// </summary>
public static class QRcodeUtils
{
private static string QrSaveUrl = "/img/QRcodeFile/";

/// <summary>
///生成二维码
/// </summary>
/// <param name="QrContent">二维码内容</param>
static void Generate(string QrContent)
{
//创建二维码生成类
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.M);
QrCode qrCode = qrEncoder.Encode(QrContent);
//输出显示在控制台
for (int j = 0; j < qrCode.Matrix.Height; j++)
{
for (int i = 0; i < qrCode.Matrix.Width; i++)
{
char charToPoint = qrCode.Matrix[i, j] ? '█' : ' ';
Console.Write(charToPoint);
}
Console.WriteLine();
}
}

/// <summary>
/// 生成图片
/// </summary>
/// <param name="QrContent">二维码内容</param>
/// <param name="saveUrl">生成二维码保存路径</param>
static string GenerateIMG(string QrContent, string saveUrl)
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.M);
QrCode qrCode = qrEncoder.Encode(QrContent);

//保存成png文件
string firstName = DateTime.Now.ToString("yyyyMMddHHmmssfff");
string lastName = new Random().Next(100, 999).ToString();
string fullName = firstName + lastName;
string fileUrl = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, QrSaveUrl, fullName);
string resultUrl = QrSaveUrl + fullName;

GraphicsRenderer render = new GraphicsRenderer(new FixedModuleSize(5, QuietZoneModules.Two), Brushes.Black, Brushes.White);
using (FileStream stream = new FileStream(fileUrl, FileMode.Create))
{
render.WriteToStream(qrCode.Matrix, ImageFormat.Png, stream);
return resultUrl;
}
}

/// <summary>
/// 生成中文二维码
/// </summary>
/// <param name="QrContent">二维码内容</param>
/// <param name="QrText">中文</param>
static void GenerateTEXT(string QrContent, string QrText)
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.M);
QrCode qrCode = qrEncoder.Encode(QrText);

//保存成png文件
string firstName = DateTime.Now.ToString("yyyyMMddHHmmssfff");
string lastName = new Random().Next(100, 999).ToString();
string fullName = firstName + lastName;
string fileUrl = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, QrSaveUrl, fullName);
string resultUrl = QrSaveUrl + fullName;
GraphicsRenderer render = new GraphicsRenderer(new FixedModuleSize(5, QuietZoneModules.Two), Brushes.Black, Brushes.White);

Bitmap map = new Bitmap(500, 500);
Graphics g = Graphics.FromImage(map);
g.FillRectangle(Brushes.Red, 0, 0, 500, 500);
render.Draw(g, qrCode.Matrix, new Point(20, 20));
map.Save(fileUrl, ImageFormat.Png);
}

/// <summary>
/// 设置二维码大小
/// </summary>
/// <param name="QrContent">二维码内容</param>
/// <param name="QrText">中文</param>
static void SetGenerateSIZE(string QrContent, string QrText)
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.M);
QrCode qrCode = qrEncoder.Encode(QrText);

//保存成png文件
string firstName = DateTime.Now.ToString("yyyyMMddHHmmssfff");
string lastName = new Random().Next(100, 999).ToString();
string fullName = firstName + lastName;
string fileUrl = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, QrSaveUrl, fullName);
string resultUrl = QrSaveUrl + fullName;

//ModuleSize 设置图片大小
//QuietZoneModules 设置周边padding
/*
* 5----150*150 padding:5
* 10----300*300 padding:10
*/
GraphicsRenderer render = new GraphicsRenderer(new FixedModuleSize(10, QuietZoneModules.Two), Brushes.Black, Brushes.White);

Point padding = new Point(10, 10);
DrawingSize dSize = render.SizeCalculator.GetSize(qrCode.Matrix.Width);
Bitmap map = new Bitmap(dSize.CodeWidth + padding.X, dSize.CodeWidth + padding.Y);
Graphics g = Graphics.FromImage(map);
render.Draw(g, qrCode.Matrix, padding);
map.Save(fileUrl, ImageFormat.Png);
}
}