Trying to find out if a provided Type is of a given generic type (with any generic types inside)

Let me Explain:

bool IsOfGenericType(Type baseType, Type sampleType)
{
    /// ...
}

Such that:

IsOfGenericType(typeof(Dictionary<,>), typeof(Dictionary<string, int>)); // True
IsOfGenericType(typeof(IDictionary<,>), typeof(Dictionary<string, int>)); // True
IsOfGenericType(typeof(IList<>), typeof(Dictionary<string,int>)); // False

However, I played with some reflection in the intermediate window, here were my results:

typeof(Dictionary<,>) is typeof(Dictionary<string,int>)
Type expected
typeof(Dictionary<string,int>) is typeof(Dictionary<string,int>)
Type expected
typeof(Dictionary<string,int>).IsAssignableFrom(typeof(Dictionary<,>))
false
typeof(Dictionary<string,int>).IsSubclassOf(typeof(Dictionary<,>))
false
typeof(Dictionary<string,int>).IsInstanceOfType(typeof(Dictionary<,>))
false
typeof(Dictionary<,>).IsInstanceOfType(typeof(Dictionary<string,int>))
false
typeof(Dictionary<,>).IsAssignableFrom(typeof(Dictionary<string,int>))
false
typeof(Dictionary<,>).IsSubclassOf(typeof(Dictionary<string,int>))
false
typeof(Dictionary<,>) is typeof(Dictionary<string,int>)
Type expected
typeof(Dictionary<string,int>) is typeof(Dictionary<string,int>)
Type expected
typeof(Dictionary<string,int>).IsAssignableFrom(typeof(Dictionary<,>))
false
typeof(Dictionary<string,int>).IsSubclassOf(typeof(Dictionary<,>))
false
typeof(Dictionary<string,int>).IsInstanceOfType(typeof(Dictionary<,>))
false
typeof(Dictionary<,>).IsInstanceOfType(typeof(Dictionary<string,int>))
false
typeof(Dictionary<,>).IsAssignableFrom(typeof(Dictionary<string,int>))
false
typeof(Dictionary<,>).IsSubclassOf(typeof(Dictionary<string,int>))
false

So now I'm at a loss because when you look at the base.Name on typeof(Dictionary) you get

Dictionary`2

Which is the same as typeof(Dictionary<,>).Name