Overcoming problems with MethodInfo.Invoke of methods with by-reference value type arguments

re: Overcoming problems with MethodInfo.Invoke of methods with by-reference value type arguments

PeterRitchie — Wed, 30 Apr 2008 12:33:37 GMT

Yes, using Delegate.CreateDelegate(Type, MethodInfo) would be better in this circumstance.

re: Overcoming problems with MethodInfo.Invoke of methods with by-reference value type arguments

Thomas Danecker — Wed, 30 Apr 2008 08:53:34 GMT

It's not only nicer to use with a delegate but also alot more performant. All the runtime type-checks aren't required anymore. This way you can increase reflection performance near to normal delegate invocation performance (which is really great)!

re: Overcoming problems with MethodInfo.Invoke of methods with by-reference value type arguments

Steve — Tue, 29 Apr 2008 18:25:51 GMT

Forgot the code :)

static void Main()

{

MethodInfo mi = typeof(Program).GetMethod("TestMethod");

var callback = (OneRefParameterCallback<int>)Delegate.CreateDelegate(typeof(OneRefParameterCallback<int>), mi);

int i = 0;

callback(ref i);

Debug.Assert(i == testValue);

}

re: Overcoming problems with MethodInfo.Invoke of methods with by-reference value type arguments

Steve — Tue, 29 Apr 2008 18:21:16 GMT

Why don't you use Delegate.CreateDelegate(Type, MethodInfo)?

Overcoming problems with MethodInfo.Invoke of methods with by-reference

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