System.Drawing.Common is not supported on non-Windows platfo

[WalterWhite]

Hello,

I am using spire.pdf to generate a pdf document that currently uses system.drawing
However, the azure server supports .NET 5, so I did not pass the pipeline

System.TypeInitializationException : The type initializer for 'Application.Extensions.GeneratorPDF' threw an exception.
---- System.TypeInitializationException : The type initializer for 'Gdip' threw an exception.
-------- System.PlatformNotSupportedException : System.Drawing.Common is not supported on non-Windows platforms. See (microsoft webiste) for more information.

I have been looking for a solution but so far have not been able to find one. Is there any way out of this?
Thanks.

[Annika.Zhou]

Hello,

Thanks for your inquiry!
We have noticed the issue you mentioned, two solutions for this issue are as follows:
1) Microsoft's solution tutorial: https://docs.microsoft.com/en-us/dotnet/core/compatibility/core-libraries/6.0/system-drawing-common-windows-only
2) Solution for Spire.PDF: replace System.Drawing.Common with SkiaSharp
Please follow the next steps to use the NetStandard dlls which based on SkiaSharp to your project manually.
Please download Spire.PDF from our website, and manually add the DLLs from the folder “netstandard2.0” (see screenshot). In addition, you need to install the following dependencies via NuGet.

SkiaSharp (>= 1.68.0)
System.Text.Encoding.CodePages (>= 4.5.0)
System.Memory (>= 4.5.0)
System.Buffers (>= 4.5.0)
System.Runtime.CompilerServices.Unsafe (>= 4.5.0)

Sincerely,
Annika
E-iceblue support team

[tomxu]

Hello

I am using Spire.Pdf Free Edition 8.2.2.1360 + .net 6.0 to save pdf page into image
and I noticed that SaveAsImage return System.Drawing.Image, which is only support on windows

Is there any solution about this. tq

Code: Select all

   
    var pdf = new Spire.Pdf.PdfDocument();
    pdf.LoadFromBytes(pdfcontent);
    System.Drawing.Image img = pdf.SaveAsImage(pageindex);
    using( var stream = new System.IO.MemoryStream())
    {
        img.Save(stream, ImageFormat.Png);
        //'Image.Save(Stream, ImageFormat)' is only supported on: 'windows'.
    }


[Andy.Zhou]

Hello

I am using Spire.Pdf Free Edition 8.2.2.1360 + .net 6.0 to save pdf page into image
and I noticed that SaveAsImage return System.Drawing.Image, which is only support on windows

Is there any solution about this. tq

Code: Select all

   
    var pdf = new Spire.Pdf.PdfDocument();
    pdf.LoadFromBytes(pdfcontent);
    System.Drawing.Image img = pdf.SaveAsImage(pageindex);
    using( var stream = new System.IO.MemoryStream())
    {
        img.Save(stream, ImageFormat.Png);
        //'Image.Save(Stream, ImageFormat)' is only supported on: 'windows'.
    }


Hi,

You can refer to the solution provided by Annika above. If there is other issue, just feel free to contact us.

[tomxu]

Hello

Thank you for your reply.

I previously copy dll from .net6.0 folder, looks not working with non-windows platform.
so we must copy dll from “netstandard2.0”, but not all version have “netstandard2.0” folder.

now it works, Thanks again.

[Andy.Zhou]

Hello

Thank you for your reply.

I previously copy dll from .net6.0 folder, looks not working with non-windows platform.
so we must copy dll from “netstandard2.0”, but not all version have “netstandard2.0” folder.

now it works, Thanks again.

You are welcome!