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POInvoke generic method with the generic type from a System.Type
 

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    <p>below is a code example and the question, please note that I can NOT use C# 4.0 and the dynamic keyword.</p> <pre><code>static class TestClass { static void Main(string[] args) { Object o = "Previous value"; Test(ref o); Trace.WriteLine(o); } static public void Test&lt;T&gt;(ref T obj) { // The goal is to somehow invoke Test2 with the real type of obj, i.e the type in obj.GetType() // 1st try: Test2(ref obj); // This doesn't work because the type in Test2 will be the same as T here. // 2nd try: MethodInfo mi = typeof(TestClass).GetMethod("Test2"); mi = mi.MakeGenericMethod(new Type[] { obj.GetType() }); mi.Invoke(null, new Object[] { obj }); // obj is no longer by reference so we need to store the object array and copy back the result after the call // 3rd try, successful implementation by the smartest mind of stack overflow :) } static public void Test2&lt;T&gt;(ref T s) { if (typeof(T) == typeof(String)) { s = (T)(Object)"Hello world!"; } } } </code></pre> <p>I also tried some more methods using Delegate.CreateDelegate but without any luck. Is this at all possible?</p> <p>Edit: I'm not afraid of using a dynamic method (and MSIL assembler) but my knowledge in this area is very limited.</p> <p>Edit2: Here's an example that is closer to what I really trying to do:</p> <pre><code>public static class TypeHandler&lt;T&gt; { public delegate void ProcessDelegate(ref T value); public static readonly ProcessDelegate Process = Init(); private static ProcessDelegate Init() { // Do lot's of magic stuff and returns a suitable delegate depending on the type return null; } } static class TestClass { static public void Main(string[] args) { Object o = "Previous value"; Test(ref o); Trace.WriteLine(o); } static public void Test&lt;T&gt;(ref T obj) { if (obj is T) { // Optimized, common case TypeHandler&lt;T&gt;.Process(ref obj); return; } Type t = obj.GetType(); // How to call the delegate found in TypeHandler&lt;t&gt;.Process ? (I can get delegate but I can't call it). } } </code></pre>
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    1. COit sounds like you shouldn't attempt to use generics. you're using reflection anyway so just lean on that
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    2. COThe fact that you are checking the type of your generic parameter is a red flag. Perhaps generics are not the right thing to be using here.
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