Finding out if a type implements a generic interface

Question

Let\'s say I have a type, MyType. I want to do the following:

1. Find out if MyType implements the IList interface, for some T.
2. If the answer to (1) is y

Answer 1

Using Anton Tykhyy's proposal, here is a small Extension Method to check if some type implements a generic interface with one given generic type parameters:

public static class ExtensionMethods
{
    /// 

    /// Checks if a type has a generic interface. 
    /// For example 
    ///     mytype.HasGenericInterface(typeof(IList<>), typeof(int)) 
    /// will return TRUE if mytype implements IList
    /// 
    public static bool HasGenericInterface(this Type type, Type interf, Type typeparameter)
    {
        foreach (Type i in type.GetInterfaces())
            if (i.IsGenericType && i.GetGenericTypeDefinition() == interf)
                if (i.GetGenericArguments()[0] == typeparameter)
                    return true;

        return false;
    }
}