How can I create an Action delegate from MethodInfo?

I want to get an action delegate from a MethodInfo object. Is this possible?

2 Answers

Use Delegate.CreateDelegate:

// Static method Action action = (Action) Delegate.CreateDelegate(typeof(Action), method); // Instance method (on "target") Action action = (Action) Delegate.CreateDelegate(typeof(Action), target, method); 

For an Action<T> etc, just specify the appropriate delegate type everywhere.

In .NET Core, Delegate.CreateDelegate doesn't exist, but MethodInfo.CreateDelegate does:

// Static method Action action = (Action) method.CreateDelegate(typeof(Action)); // Instance method (on "target") Action action = (Action) method.CreateDelegate(typeof(Action), target); 

This seems to work on top of John's advice too:

public static class GenericDelegateFactory { public static object CreateDelegateByParameter(Type parameterType, object target, MethodInfo method) { var createDelegate = typeof(GenericDelegateFactory).GetMethod("CreateDelegate") .MakeGenericMethod(parameterType); var del = createDelegate.Invoke(null, new object[] { target, method }); return del; } public static Action<TEvent> CreateDelegate<TEvent>(object target, MethodInfo method) { var del = (Action<TEvent>)Delegate.CreateDelegate(typeof(Action<TEvent>), target, method); return del; } }