C#經過第三方組件生成二維碼（QR Code）和條形碼（Bar Code）

 

方法不少，能夠參考如下幾種方案，就不展開，地址以下：

https://www.cnblogs.com/mingmingruyuedlut/p/6120671.html

 

這裏描述的，是某項目需求，在網頁中輸出爲圖片並展現，代碼以下：

using ThoughtWorks.QRCode.Codec;

 

public void ProcessRequest(HttpContext context)
{

context.Response.ContentType = "text/plain";
string OrderNo = context.Request.Params["OrderNo"];
QRCodeEncoder encoder = new QRCodeEncoder();
encoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;//編碼方式(注意：BYTE能支持中文，ALPHA_NUMERIC掃描出來的都是數字)
encoder.QRCodeScale = 6;//大小(值越大生成的二維碼圖片像素越高)
encoder.QRCodeVersion = 0;//版本(注意：設置爲0主要是防止編碼的字符串太長時發生錯誤)
encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;//錯誤效驗、錯誤更正(有4個等級)
//encoder.QRCodeBackgroundColor = Color.Yellow;
//encoder.QRCodeForegroundColor = Color.Green;
System.Drawing.Image _CodeImage = encoder.Encode(OrderNo);
System.IO.MemoryStream _Stream = new System.IO.MemoryStream();
_CodeImage.Save(_Stream, System.Drawing.Imaging.ImageFormat.Jpeg);
context.Response.ContentType = "image/tiff";
context.Response.Clear();
context.Response.BufferOutput = true;
context.Response.BinaryWrite(_Stream.GetBuffer());
context.Response.Flush();

//39碼生成部分，屏蔽
/*context.Response.ContentType = "text/plain";
string OrderNo = context.Request.Params["OrderNo"];
WebApplication1.Code39 _Code39 = new Code39();
_Code39.Height = 60;
_Code39.Magnify = 0;
_Code39.ViewFont = new Font("Arial", 12);
System.Drawing.Image _CodeImage = _Code39.GetCodeImage(OrderNo, Code39.Code39Model.Code39Normal, true);
System.IO.MemoryStream _Stream = new System.IO.MemoryStream();
_CodeImage.Save(_Stream, System.Drawing.Imaging.ImageFormat.Jpeg);
context.Response.ContentType = "image/tiff";
context.Response.Clear();
context.Response.BufferOutput = true;
context.Response.BinaryWrite(_Stream.GetBuffer());
context.Response.Flush();*/

}

 

 this.Image1.ImageUrl = "/TextBuilder.ashx?OrderNo=" + Ti_NO;

 

附上此種QrCode使用方法