Use Reflection to Get and Set Properties on a class

Sometimes it is useful to access a property on a class that you may or may not have created. Use the code below to set or get a value by name for any class.

using System;
using System.Data;
using System.Configuration;
using System.Reflection;

namespace MyApp
{

    public class ReflectionHelper
    {
        public ReflectionHelper()
        {

        }

        public static Object GetProperty(System.Object obj, System.String propertyName)
        {

            if (propertyName == null)
            {
                throw new System.ArgumentException("No name specified");
            }

            PropertyInfo pi = obj.GetType().GetProperty(propertyName);

            if (pi == null)
            {
                throw new Exception("Object does not have a property named: " + propertyName);
            }

            return pi.GetValue(obj, null);

        }

        public static void SetProperty(System.Object obj, System.String propertyName, System.Object propertyValue)
        {
            if (obj == null)
            {
                throw new System.ArgumentException("No target specified");
            }
            if (propertyName == null)
            {
                throw new System.ArgumentException("No name specified");
            }

            PropertyInfo pi = obj.GetType().GetProperty(propertyName);

            if (pi == null)
            {
                throw new Exception("Object does not have a property named: " + propertyName);
            }

            pi.SetValue(obj, propertyValue, null);

        }
    }
}