Missing .NET Framework Methods

[donr484]

Type of issue

Code doesn't work

Description

I have older third party dlls that are calling methods of System.Drawing.Bitmap, like FromGDIplus(), which are missing in the System.Drawing.Common nuget package for .NET 8. Is there some reason the Bitmap class is not inheritable and not partial? I have been trying to figure out a way to add missing methods myself, but I cannot modify the calling dll to use a custom class. It has to be in the System.Drawing.Bitmap class. Since the method is static, I cannot use an extension method. Since the method doesn't exist, I cannot redirect. It would be nice if all the functionality from .NET Framework was ported to the latest .NET. Is there anything I can do or am I stuck on .NET Framework forever with these dlls?

Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.drawing.bitmap?view=windowsdesktop-8.0&viewFallbackFrom=net-8.0

Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Drawing/Bitmap.xml

Document Version Independent Id

dd2df450-62f2-6761-db08-bc4fd8bb1907

Article author

@dotnet-bot

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Tagging subscribers to this area: @dotnet/area-system-drawing

[ViktorHofer]

cc @JeremyKuhne

[JeremyKuhne]

@donr484 the method you're talking about was not public (and we do not support calling non-public members). That said, I have approval for something similar to be made public:

#8833

I didn't think that someone would want to be creating a bitmap this way, but it fits the general pattern. Can you clarify your scenario and the types of wrapper objects you're creating? I don't mind adding new public API, it just wasn't super high on the priority list as I was only needing them for internal purposes.

As far as making internals match old versions that isn't something we can do, though.

[donr484]

Thanks for the response. I understand it isn't supported, but it was used anyway for some reason by these third party dlls. The missing method is like 3 lines of code, assuming what that method calls is still present in the Bitmap class.

Unfortunately I have no access to the source code of those third party dlls. The missing method was used internally by them. They have newer versions now of course, but the licensing is much more costly. I ran into the missing bitmap method when the third party dll tried to extract an embedded image displayed on a page in a pdf.

If the method can't be added, I'll just have to start over with new libraries or keep using .net framework. The functionality revolves around imaging, pdfs, and barcodes. It would be nice if .net had pdf and barcode functionality built in. It's always a struggle to find something to fill that void in .net.