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2009-01-12T19:45:31.770
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A lambda expression is convertible to either a delegate type or an expression tree with the right signature - but you need to specify which delegate type it is. I think your code would be much simpler if you made this a generic method: <pre><code>public static List<object> ConvertToListOfObjects<T>(List<T> list) { return list.ConvertAll<object>(t => t); } </code></pre> Then you just need to find and invoke that method generically: <pre><code>MethodInfo method = typeof(Foo).GetMethod("ConvertToListOfObjects", BindingFlags.Static | BindingFlags.Public); Type listType = list.GetType().GetGenericArguments()[0]; MethodInfo concrete = method.MakeGenericMethod(new [] { listType }); List<object> objectList = (List<object>) concrete.Invoke(null, new object[]{list}); </code></pre> Complete example: <pre><code>using System; using System.Reflection; using System.Collections.Generic; class Test { public static List<object> ConvertToListOfObjects<T>(List<T> list) { return list.ConvertAll<object>(t => t); } static void Main() { object list = new List<int> { 1, 2, 3, 4 }; MethodInfo method = typeof(Test).GetMethod("ConvertToListOfObjects", BindingFlags.Static | BindingFlags.Public); Type listType = list.GetType().GetGenericArguments()[0]; MethodInfo concrete = method.MakeGenericMethod(new [] { listType }); List<object> objectList = (List<object>) concrete.Invoke(null, new object[] {list}); foreach (object o in objectList) { Console.WriteLine(o); } } } </code></pre>
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1. POHow do I invoke a method through reflection with a lambda expression as a parameter?
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1. USJon Skeet
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1. POHow do I invoke a method through reflection with a lambda expression as a parameter?
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