1，首先下载DotNetBarcode.dll文件

下载地址：

http://dl.downyi.com/dotnetbarcode_dll.rar

2，调用方式

string path = @"D:\QRcode.png";  //保存路径 
DotNetBarcode BarCode = new DotNetBarcode();
BarCode.Type = DotNetBarcode.Types.QRCode;   // 生成的规则有：code39/jan13/jan8/QRCode
BarCode.QRSetTextType = DotNetBarcode.QRTextTypes.Binary;
BarCode.SaveFileType = DotNetBarcode.SaveFileTypes.Png;

BarCode.Save("0006267753", path, 126, 126);