How can I serialize a System.Collections.Immutable.ImmutableList<T>?

For example, the following code will cause an exception, saying

The serializer for type ‘System.Collections.Immutable.ImmutableList`1[System.Int32]’ could not be found.

I suspect other immutable types won’t work either…

using ExtendedXmlSerializer;
using ExtendedXmlSerializer.Configuration;
using System.Collections.Immutable;
using System.IO;

class Test
{
    public ImmutableList<int> List { get; }
    public Test(ImmutableList<int> list)
    {
        List = list;
    }

    public void TestSerialize()
    {
        var serializer = new ConfigurationContainer()
            .UseAutoFormatting()
            .UseOptimizedNamespaces()
            .EnableImplicitTyping(typeof(Test))
            .EnableParameterizedContentWithPropertyAssignments()
            .Create();
        using var output = File.Create("test.xml");
        serializer.Serialize(output, new Test(new[] { 1 }.ToImmutableList()));
    }
}

[Mike-E-angelo]

Alrighty, this has been deployed to NuGet here: https://www.nuget.org/packages/ExtendedXmlSerializer/

Please do let me know of any issues you find and I will take a look into them for you. Closing for now.

[lanyizi]

Yeah, now everything works as expected!