Exception in ContextualType with System.Collection.ArrayList

[diabhoil]

I am getting an "Failed to retrieve enumerable item type of System.Collection.ArrayList" exception with inner exception "InvalidOperationException: Sequence contains more than one matching element" at

Namotion.Reflection/src/Namotion.Reflection/Context/ContextualType.cs

Line 143 in a4354e2

var getEnumeratorMethod = Methods.SingleOrDefault(m => m.Name == "GetEnumerator");

Error occured in NJsonSchema but is thrown in Namotion.Reflection.

Using .Net 8

[pickarjt]

I was able to fix this problem locally by updating ContextualType.cs replacing the below statement:

var getEnumeratorMethod = Methods.SingleOrDefault(m => m.Name == "GetEnumerator");

with this:

// Ensure class implements IEnumerable since it is possible for a class to contain a GetEnumerator() method
// even if the class doesn't implement IEnumerable.
if (!TypeInfo.ImplementedInterfaces.Any(i => "System.Collections.IEnumerable".Equals(i.FullName, StringComparison.Ordinal)))
{
	return null;
}

// If a class defines more than one GetEnumerator() method (System.Collections.ArrayList, eg), 
// then find the GetEnumerator() method that takes the least number of input arguments -
// note, the GetEnumerator() method defined by IEnumerable takes zero input arguments.
//
// EndsWith(".GetEnumerator") check is done in case a GetEnumerator() method is namespaced;
// for example: IEnumerator IEnumerable.GetEnumerator().
ContextualMethodInfo getEnumeratorMethod = Methods
	.Where(m => m.Name.Equals("GetEnumerator", StringComparison.Ordinal) || m.Name.EndsWith(".GetEnumerator", StringComparison.Ordinal))
	.OrderBy(m => m.Parameters.Length)
	.FirstOrDefault();

[Brain2000]

I had the same issue when calling .ToContextualType( )
This should be fixed.