Call string method with reflection and Expression : Method « Reflection « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Reflection
3. Method

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

    class MainClass
    {
        static void Main()
        {
            MethodInfo method = typeof(string).GetMethod("StartsWith", new[] { typeof(string) });
            var target = Expression.Parameter(typeof(string), "x");
            var methodArg = Expression.Parameter(typeof(string), "y");
            Expression[] methodArgs = new[] { methodArg };

            Expression call = Expression.Call(target, method, methodArgs);

            var lambdaParameters = new[] { target, methodArg };
            var lambda = Expression.Lambda<Func<string, string, bool>>(call, lambdaParameters);

            var compiled = lambda.Compile();

            Console.WriteLine(compiled("First", "S"));
        }
    }