How to compare a Microsoft.CodeAnalysis.ITypeSymbol to a System.Type

Question

I have successfully received an ITypeSymbol from a SyntaxNode by using:

SemanticModel.GetTypeInfo(sytaxNode).ConvertedType

Now I would like to

Answer 1

You can get the INamedTypeSymbol for a type name with Compilation.GetTypeByMetadataName().

So try this:

semanticModel.GetTypeInfo(sytaxNode).ConvertedType.Equals(
  semanticModel.Compilation.GetTypeByMetadataName(typeof(WhateverType).FullName))

This won't work with closed generic types, for those you'll need to do a bit more. For example:

var ienumerableType = semanticModel.Compilation.GetTypeByMetadataName("System.Collections.Generic.IEnumerable`1");
var intType = semanticModel.Compilation.GetTypeByMetadataName("System.Int32");
var type = ienumerableType.Construct(intType);