So as the title says I\'m trying to get type information from types declared in another assembly using Roslyn. Initially I tried to do this by manually looking through refer
Don't call GetTypeInfo. Instead, once you have the PropertyDeclarationSyntax, call GetDeclaredSymbol with that declaration syntax, and you will get the IPropertySymbol for that property. From there, you can grab IPropertySymbol.Type, which is the type you're looking for.