C# WEB 使用 RDLC 如何開發QRCODE 標籤

c# rdlc

noway 2024-10-24 22:08:03 ‧ 1627 瀏覽

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您好：
請問C# 如何用RDLC

1.如何作到用標籤機印出的
2.QRCODE 適用網站API作嗎?

目前我RDLC 產出PDF 預設8寬*5高，PDF 是一張標籤+一行橫向字
但用TSC TTP-245標籤機印出來卻是
印出兩張標籤，一行字垂直跨兩張標籤
謝謝

一般用WORD 印8*5，是OK的

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4 個回答

japhenchen

iT邦超人 1 級 ‧ 2024-10-25 07:19:19

最佳解答

WEB版的RDLC只能輸出成HTML或PDF或WORD，這些軟體或瀏覽器對標籤紙機控不靈光，除非你改輸出成自己設定的專屬檔案格式，輸出至你預先安裝在客戶端的電腦上的程式(用MimeType綁定），由該程式負責轉印到標籤機，標籤輸出必要的話預先宣告DeviceInfo避免設備輸出尺寸不正確

        private string deviceInfo =
           @"<DeviceInfo>
                <OutputFormat>EMF</OutputFormat>
                <PageWidth>120mm</PageWidth>
                <PageHeight>65mm</PageHeight>
                <MarginTop>5mm</MarginTop>
                <MarginLeft>5mm</MarginLeft>
                <MarginRight>5mm</MarginRight>
                <MarginBottom>5mm</MarginBottom>
            </DeviceInfo>";

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japhenchen iT邦超人 1 級 ‧ 2024-10-25 07:36:50 檢舉

noway
QRCODE你可以透過nuget安裝GMA QRCODE套件

 private Bitmap generateQR(string codeString)
 {
     double logoAtQRRatio = 0.30;
     string logopath = Server.MapPath("/event/QRLOGO.png");
     Bitmap logo = new Bitmap(logopath);
     int logowidth = logo.Width;
     int logoheight = logo.Height;
     double logoRatio = logoheight / logowidth;
     /*
       Level L (Low)      7%  of codewords can be restored. 
       Level M (Medium)   15% of codewords can be restored. 
       Level Q (Quartile) 25% of codewords can be restored. 
       Level H (High)     30% of codewords can be restored. 
     */
     QrEncoder encoder = new QrEncoder(ErrorCorrectionLevel.Q);

     //編碼
     QrCode code = encoder.Encode(codeString);

     //定義線條寬度
     int moduleSizeInPixels = 8;
     int topGap = 0;// moduleSizeInPixels * 3;

     //繪二維條碼圖初始化
     GraphicsRenderer renderer = new GraphicsRenderer(
         new FixedModuleSize(moduleSizeInPixels, QuietZoneModules.Two), Brushes.Black, Brushes.White);

     //留白區大小
     int paddinggap = moduleSizeInPixels;
     Point padding = new Point(paddinggap, topGap + paddinggap);

     //取得條碼圖大小
     DrawingSize dSize = renderer.SizeCalculator.GetSize(code.Matrix.Width);
     int imgWidth = dSize.CodeWidth + 2 * padding.X;
     int imgHeight = dSize.CodeWidth + 2 * padding.Y ;
     int shiftY = dSize.CodeWidth + 2 * padding.Y + 3;
     //設定影像大小
     float newlogoW = imgWidth;// (int)Math.Round((double)imgWidth * logoAtQRRatio);
     float newlogoH = (float)newlogoW * ((float)logoheight /logowidth);
     RectangleF rectLogo =
         new RectangleF(0, shiftY, newlogoW, newlogoH);
     Bitmap img = new Bitmap(imgWidth, imgHeight);
     //繪製二維條碼圖
     Graphics g = Graphics.FromImage(img);
     //g.FillRectangle(Brushes.Black, new Rectangle(0, 0, img.Width, img.Height));

     return img;
 }

[noway](/users/20104095)
QRCODE你可以透過nuget安裝GMA QRCODE套件
```
 private Bitmap generateQR(string codeString)
 {
     double logoAtQRRatio = 0.30;
     string logopath = Server.MapPath("/event/QRLOGO.png");
     Bitmap logo = new Bitmap(logopath);
     int logowidth = logo.Width;
     int logoheight = logo.Height;
     double logoRatio = logoheight / logowidth;
     /*
       Level L (Low)      7%  of codewords can be restored. 
       Level M (Medium)   15% of codewords can be restored. 
       Level Q (Quartile) 25% of codewords can be restored. 
       Level H (High)     30% of codewords can be restored. 
     */
     QrEncoder encoder = new QrEncoder(ErrorCorrectionLevel.Q);

//編碼
     QrCode code = encoder.Encode(codeString);

//定義線條寬度
     int moduleSizeInPixels = 8;
     int topGap = 0;// moduleSizeInPixels * 3;

//繪二維條碼圖初始化
     GraphicsRenderer renderer = new GraphicsRenderer(
         new FixedModuleSize(moduleSizeInPixels, QuietZoneModules.Two), Brushes.Black, Brushes.White);

//留白區大小
     int paddinggap = moduleSizeInPixels;
     Point padding = new Point(paddinggap, topGap + paddinggap);

//取得條碼圖大小
     DrawingSize dSize = renderer.SizeCalculator.GetSize(code.Matrix.Width);
     int imgWidth = dSize.CodeWidth + 2 * padding.X;
     int imgHeight = dSize.CodeWidth + 2 * padding.Y ;
     int shiftY = dSize.CodeWidth + 2 * padding.Y + 3;
     //設定影像大小
     float newlogoW = imgWidth;// (int)Math.Round((double)imgWidth * logoAtQRRatio);
     float newlogoH = (float)newlogoW * ((float)logoheight /logowidth);
     RectangleF rectLogo =
         new RectangleF(0, shiftY, newlogoW, newlogoH);
     Bitmap img = new Bitmap(imgWidth, imgHeight);
     //繪製二維條碼圖
     Graphics g = Graphics.FromImage(img);
     //g.FillRectangle(Brushes.Black, new Rectangle(0, 0, img.Width, img.Height));

return img;
 }
```

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