System.Drawing.Common different versions between net8.0 and others lead to runtime error when calling from a class library

[gitPhate]

EPPlus usage

Personal use

Environment

Windows

Epplus version

7.6.1

Spreadsheet application

Excel

Description

EPPlus latest version (7.6.1) references EPPlus.System.Drawing version 7.6.1 which for some reasons have a lower version of System.Drawing.Common only for net8.0:

This leads to a runtime error when creating a NET Standard class library using EPPlus and then reference that class library from a net8.0 starting project (e.g. console app). In fact when using any class from System.Drawing.Common from within the library you'll get:

System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Drawing.Common, Version=9.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.'

Here's a complete POC:
NET Standard project called MyClassLib:

public class Class1
    {
        public void MyMethod()
        {
            using (Graphics g = Graphics.FromHwnd(IntPtr.Zero)) //This is from System.Drawing.Common
            {
                //do stuff
            }
        }
    }

NET 8 console app:

using MyClassLib;

Class1 class1 = new();
class1.MyMethod();

[JanKallman]

This change was done as requested in #1856. I will review this again, as it appears it causes other problems.

[JanKallman]

Yes, you are right. I will revert the references for .NET standard 2.0 & 2.1 and .NET 8 to the packages with version 8.0.*

    <PackageVersion Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
    <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.1" />
    <PackageVersion Include="System.ComponentModel.Annotations" Version="5.0.0" />
    <PackageVersion Include="System.Drawing.Common" Version="8.0.14" />
    <PackageVersion Include="System.Formats.Asn1" Version="8.0.2" />
    <PackageVersion Include="System.Security.Cryptography.Pkcs" Version="8.0.1" />
    <PackageVersion Include="System.Text.Encoding.CodePages" Version="8.0.0" />
    <PackageVersion Include="System.Text.Json" Version="8.0.5" />

Target framework .NET 9 will override these versions and continue to reference the 9.0.x.
Sorry for the inconvenience.

[JanKallman]

Fixed in EPPlus 7.7.0