using reflection to invoke a method

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Hello everyone,

There are two ways to use reflection to invoke a method,

1. Using InvokeMember;
2. Using GetType.GetMethod to retrieve a MethodInfo object, then use the MethodInfo object to invoke the method.

My point is from the result point of view, they are the same, but method 2 if more efficient if we want to invoke the method multiple of times by the same MethodInfo object -- since each time we call InvokeMember, it needs to find the method, nothing saved as MethodInfo object in method 2 and each time InvokeMember did the binding to find the same method.

My question is whether my point of understanding is correct and whether there any more differences/pros/cons compared with the 2 methods.

thanks in advance,
George

Posted 7-Sep-08 16:16pm

George_George

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PIEBALDconsult · Answer 1 · 2008-09-07T16:36:00

Solution 1

Sounds reasonable to me. I never use InvokeMember.

Posted 7-Sep-08 16:36pm

PIEBALDconsult

N a v a n e e t h · Answer 2 · 2008-09-07T18:23:00

George_George wrote:
My question is whether my point of understanding is correct and whether there any more differences/pros/cons compared with the 2 methods.

Looks like your understanding are correct.

If you know the method signature at compile time, you can gain more performance by creating a delegate from the MethodInfo using Delegate.CreateDelegate(Type, MethodInfo)[^] and invoking that delegate.