Can not save Bitmap to MemoryStream

[mrzaxaryan]

Repro
var img = new Bitmap(128, 128);
using var ms = new MemoryStream();
img.Save(ms, ImageFormat.Png);
StackTrace
at WinFormsComInterop.WinFormsComWrappers.ComputeVtables(Object, CreateComInterfaceFlags, Int32&) + 0x1af
at System.Runtime.InteropServices.ComWrappers.CreateCCW(Object, CreateComInterfaceFlags) + 0x39
at System.Runtime.InteropServices.ComWrappers.<>c__DisplayClass14_0.b__0(Object) + 0x1c
at System.Runtime.CompilerServices.ConditionalWeakTable2.GetValueLocked(TKey, ConditionalWeakTable2.CreateValueCallback) + 0x2d
at System.Runtime.CompilerServices.ConditionalWeakTable2.GetValue(TKey, ConditionalWeakTable2.CreateValueCallback) + 0x3e
at System.Runtime.InteropServices.ComWrappers.GetOrCreateComInterfaceForObject(Object, CreateComInterfaceFlags) + 0xa8
at System.Runtime.InteropServices.ComWrappers.ComInterfaceForObject(Object, Guid) + 0xe
at System.Drawing.SafeNativeMethods.Gdip.GdipSaveImageToStream(HandleRef, Interop.Ole32.IStream, Guid&, HandleRef) + 0xbd
at System.Drawing.Image.Save(Stream, ImageCodecInfo, EncoderParameters) + 0x144
at Test.Program.Main() + 0x8f

[kant2002]

What version of .NET ? If .NET 6, is it preview or nightly.

[kant2002]

Also can you try add

<PackageReference Include="System.Drawing.Common" Version="6.0.0-preview.7.*" />

to you project. That way my library no longer needed. If you want completely go reflection-free, you need net6.0-windows

[mrzaxaryan]

I have
.NET Version: 6.0.0-preview.6.21352.12
System.Drawing.Common 6.0.0-preview.6.21352.12
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net6.0-windows</TargetFramework>
<RuntimeIdentifier>win-x64</RuntimeIdentifier>
<UseWindowsForms>true</UseWindowsForms>
<DisableWinExeOutputInference>true</DisableWinExeOutputInference>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.DotNet.ILCompiler" Version="6.0.0-rc.1.21376.2" />
<PackageReference Include="System.Drawing.Common" Version="6.0.0-preview.6.21352.12" />
<PackageReference Include="WinFormsComInterop" Version="0.2.9" />
</ItemGroup>

[kant2002]

How problematic for you would be use System.Drawing.Common at least 6.0.0-preview7.*.After dotnet/runtime#54884 I cannot rely on internal interfaces, so it may break. Also remove reference to WinFormsComInterop you would not longer need it.

[mrzaxaryan]

OK. Thank you

[kant2002]

I update https://github.com/kant2002/NativeAOTImages to be more inline with changes. so my lib no longer needed. Let me know when you resolve issue.

[mrzaxaryan]

Yes it works in normal and reflection-free mode