Passing Generic type

Question

I have a method

 public Queryable Query<T>()
 {
 }

now can i call the method by dynamically creating generic argument T.

saomething like this

 public Queryable Query<T>()
 {

    Query<OtherT>();
 }

otherT could be a type of a property in T.

Thanks,

Answer 1

You can call generic methods dynamically using reflection by first getting the generic method definition (with Type.GetMethod ), then calling MakeGenericMethod and supplying the type arguments, then calling Invoke . However, you haven't given us enough information to go on in order to give you an example.

Answer 2

You can't. The generic parameter type needs to be known at compile time. That's why we say that when we use generics it is a strongly typed code, because the types are known in advance. When the type is known only at runtime you cannot use it as generic parameter.

Answer 3

Try the following:

public Queryable Query<T>()
{
    MethodInfo method = GetType().GetMethod("Query");

    return (Queryable)method.MakeGenericMethod(typeof(OtherT)).Invoke(this, null);
}

This will automatically close the Query<T> method of typeof(OtherT) . You can provide the type you require here.