get methodinfo from a method reference C#

Slight adaptation of a previously posted answer, but this blog post seems to achieve what you're asking for; http://blog.functionalfun.net/2009/10/getting-methodinfo-of-generic-method.html

Sample usage would be as follows;

var methodInfo = SymbolExtensions.GetMethodInfo(() => Program.Main());

Original answer was to this question; https://stackoverflow.com/a/9132588/5827

You can use expression trees for non-static methods. Here is an example.

using System.Linq.Expressions;
using System.Reflection;

public static class MethodInfoHelper
{
    public static MethodInfo GetMethodInfo<T>(Expression<Action<T>> expression)
    {
        var member = expression.Body as MethodCallExpression;

        if (member != null)
            return member.Method;

        throw new ArgumentException("Expression is not a method", "expression");
    }
}

You would use it like this:

        MethodInfo mi = MethodInfoHelper.GetMethodInfo<Program>(x => x.Test());
        Console.WriteLine(mi.Name);

Test() is a member function declared in the Program class.

Use MemberExpression and MemberInfo instead if you want to support property getters and setters.

Test class

public class  Foo
{
    public void DoFoo()
    {
        Trace.WriteLine("DoFoo");
    }

    public static void DoStaticFoo()
    {
        Trace.WriteLine("DoStaticFoo");
    }
}

And you can do something like this

MethodInfo GetMethodInfo(Action a)
{
    return a.Method;
}

var foo = new Foo();
MethodInfo mi = GetMethodInfo(foo.DoFoo);
MethodInfo miStatic = GetMethodInfo(Foo.DoStaticFoo);

//do whatever you need with method info

Update
Per @Greg comment if you have some parameters to the methods, you can use Action<T>, Action<T1, T2>, Action<T1, T2, T3>, or Func<T1>, the inconvenience is that you will still need to write the overloads for GetMethodInfo.