How to Load type from string directly into linq expression in C# ?

Question

This is the definition:

public static IEnumerable<TResult> OfType<TResult>(this IEnumerable source);

How to replace TResult with something like:

Type.GetType("MyClass from assembly");

Answer 1

You can't. Generic arguments enforce type security at compile time while the Type.GetType uses reflection and is not known at compile time. What exactly are you trying to achieve?

Answer 2

You can't do this at compile time if you don't know the type involved, but you could write your own extension method for IEnumerable:

public static IEnumerable OfType(this IEnumerable source, Type t)
{
    foreach(object o in source)
    {
        if(t.IsAssignableFrom(o.GetType()))
            yield return o;
    }
}