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mef-catalogs-implement-ienumerable-and-therefore-can-no-longer-be-used-to-create-a-serializer.md

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MEF catalogs implement IEnumerable and therefore can no longer be used to create a serializer

Scope

Major

Version Introduced

4.5

Source Analyzer Status

Available

Change Description

Starting with the .NET Framework 4.5, MEF catalogs implement IEnumerable and therefore can no longer be used to create a serializer (xref:System.Xml.Serialization.XmlSerializer?displayProperty=name object). Trying to serialize a MEF catalog throws an exception.

  • Quirked
  • Build-time break

Recommended Action

Can no longer use MEF to create a serializer

Affected APIs

  • Not detectable via API analysis

Category

Managed Extensibility Framework (MEF)