.NET Core – gdiplus.dll not found in Linux

6 Comments

1. 

   sudhirsays:

   6 years ago

   hi

   I tried your solution on the server where my api is hosted on linux env. but its not working.

   I posted error on github for dotnet core repository.
   https://github.com/dotnet/corefx/issues/31895#issuecomment-415222526

   Reply
2. 

   sudhir thankisays:

   6 years ago

   I tried your solution, but unfortunately its still not working on ubunto 16.4
   here is my code:
   public static bool CreateThumbnail(int Width, int Height, Stream filePath, string saveFilePath)
   {

   try
   {
   var byteArray = filePath;
   var streamImg = Image.FromStream(byteArray);

   Bitmap sourceImage = new Bitmap(streamImg);
   using (Bitmap objBitmap = new Bitmap(Width, Height))
   {
   objBitmap.SetResolution(sourceImage.HorizontalResolution, sourceImage.VerticalResolution);
   using (Graphics objGraphics = Graphics.FromImage(objBitmap))
   {
   // Set the graphic format for better result cropping
   objGraphics.SmoothingMode = SmoothingMode.HighQuality;
   objGraphics.PixelOffsetMode = PixelOffsetMode.HighSpeed;
   objGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
   objGraphics.CompositingQuality = CompositingQuality.HighQuality;
   objGraphics.DrawImage(sourceImage, 0, 0, Width, Height);

   // Save the file path, note we use png format to support png file
   objBitmap.Save(saveFilePath);
   }
   }
   }
   catch (Exception ex)
   {
   LogHelper.Log(“Create Thumbnail: ERROR:” + ex.Message + “\n” + ex.StackTrace);
   return false;
   }
   return true;
   }

   and here is the error:
   ERROR:The type initializer for ‘Gdip’ threw an exception.
   at System.Drawing.SafeNativeMethods.Gdip.GdipLoadImageFromDelegate_linux(StreamGetHeaderDelegate getHeader, StreamGetBytesDelegate getBytes, StreamPutBytesDelegate putBytes, StreamSeekDelegate doSeek, StreamCloseDelegate close, StreamSizeDelegate size, IntPtr& image)
   at System.Drawing.Image.InitFromStream(Stream stream)
   at System.Drawing.Image.LoadFromStream(Stream stream, Boolean keepAlive)

   Reply
3. 

   Carlossays:

   6 years ago

   Hi, I’m noob with docker,
   I’d like to know how to run this commands in my docker file?

   I tried doing this, but nothing change:
   FROM microsoft/aspnetcore:2.0 AS base
   WORKDIR /app
   EXPOSE 80

   FROM microsoft/aspnetcore-build:2.0 AS build
   RUN apt-get update
   RUN apt-get install -y libgdiplus
   RUN cd /usr/lib
   RUN sudo ln -s libgdiplus.so gdiplus.dll
   WORKDIR /src
   COPY *.sln ./
   COPY NuGet.config ./
   COPY Core.MyApp.Api/Core.MyApp.Api.csproj Core.MyApp.Api/
   RUN dotnet restore Core.MyApp.Api/Core.MyApp.Api.csproj
   COPY . .
   WORKDIR /src/Core.MyApp.Api
   RUN dotnet build Core.MyApp.Api.csproj -c Release -o /app

   FROM build AS publish
   RUN dotnet publish Core.MyApp.Api.csproj -c Release -o /app

   FROM base AS final
   WORKDIR /app
   COPY –from=publish /app .
   ENTRYPOINT [“dotnet”, “Core.MyApp.dll”]

   Reply
4. 

   Nordessays:

   6 years ago

   Thank’s, I did what you said, but I have an issue regarding the color. The QrCode generated with QrCoder is weird under Linux (color not consistent and changes randomly).

   Code:

   var myLogo = new Bitmap(“./Assets/myLogo.png”);
   QRCodeGenerator qrGenerator = new QRCodeGenerator();
   QRCodeData qrCodeData = qrGenerator.CreateQrCode(id.ToString(), QRCodeGenerator.ECCLevel.Q);
   QRCode qrCode = new QRCode(qrCodeData);
   Bitmap qrCodeImage = qrCode.GetGraphic(6, ArgbToColor(“#FF3F729B”), ArgbToColor(“#FFFFFFFF”), myLogo, 17, 8, true);

   // Convert Bitmap to Png
   MemoryStream stream = new MemoryStream();
   qrCodeImage.Save(stream, ImageFormat.Png);
   stream.Flush();
   stream.Seek(0, SeekOrigin.Begin);

   return File(stream, “image/png”);

   Reply
   • 

     Raffaelsays:

     6 years ago

     Hi Nordes,

     do the “changing colors” also occur if you use a color from the Color-class? (E.g. Color.Green instead of ArgbToColor(“#FF3F729B”) )

     Do you use the newest version of QRCoder? (Currently it is 1.3.2)

     Kind regards,
     Raffael

     Reply
5. 

   jgmangalasays:

   6 years ago

   thanks this helped me lot.

   Reply