Question

I have the following two functions:

public class MyClass
{
    public void Save<TObject>(TObject object) where TObject : class
    {   
    }

    public void Save<TObject>(TObject object, String strValue) where TObject : class
    {
    }
}

I want to be able to dynamically call the first save function similar to the following:

public void DoSomething<T>(String strMethod) where T : class
{
    T myObject = Activator.CreateInstance<T>();
    MyClass.GetType().GetMethod(strMethod, new Type[] { typeof(T) }).MakeGenericMethod(typeof(T)).Invoke(null, new[] { myObject });
 }   

Unfortunately, when I do this, it is unable to match the first save function. If I remove the new Type[] { typeof(T) } I am stuck with an ambiguity issue. What am I missing?

Answer 1

The generic type arguments won’t match; the specific T in your DoSomething is not the same as the open parameter TObject. Instead, search for all Save methods, and then filter after that:

...GetMethods().Single(m => m.Name == strMethod && m.GetParameters().Length == 1)...