下面是测试类代码：
using System;
using System.Reflection;

using NUnit.Framework;

namespace ClassLibrary1
{
    /**//// <summary>
    /// Summary description for Tester.
    /// </summary>
    [TestFixture]
    public class Tester
    {
        [Test]
        public void MyPrivateMethod_Test()
        {
            ClassLibrary1.Class1 class1 = new ClassLibrary1.Class1();
            object[] aobjParams = new object[] { 3， 4 };
            object strRet;
            strRet = RunInstanceMethod( typeof(ClassLibrary1.Class1)，
                "MyPrivateMethod"，
                class1，
                aobjParams
            );
            Assert.AreEqual(7， strRet.ToString());
        }

        /**//// <summary>
        /// 运行静态方法
        /// </summary>
        /// <param name="t"></param>
        /// <param name="strMethod"></param>
        /// <param name="aobjParams"></param>
        /// <returns></returns>
        public static object RunStaticMethod(System.Type t， string strMethod，
            object [] aobjParams)
        {
            BindingFlags eFlags =
                BindingFlags.Static | BindingFlags.Public |
                BindingFlags.NonPublic;
            return RunMethod(t， strMethod，
                null， aobjParams， eFlags);
        }

        /**//// <summary>
        /// 运行实例方法
        /// </summary>
        /// <param name="t"></param>
        /// <param name="strMethod"></param>
        /// <param name="objInstance"></param>
        /// <param name="aobjParams"></param>
        /// <returns></returns>
        public static object RunInstanceMethod(System.Type t， string strMethod，
            object objInstance， object [] aobjParams)
        {
            BindingFlags eFlags = BindingFlags.Instance | BindingFlags.Public |
                BindingFlags.NonPublic;
            return RunMethod(t， strMethod，
                objInstance， aobjParams， eFlags);
        }

        /**//// <summary>
        /// 运行自定义方法
        /// </summary>
        /// <param name="t"></param>
        /// <param name="strMethod"></param>
        /// <param name="objInstance"></param>
        /// <param name="aobjParams"></param>
        /// <param name="eFlags"></param>
        /// <returns></returns>
        private static object RunMethod(System.Type t， string
            strMethod， object objInstance， object [] aobjParams， BindingFlags eFlags)
        {
            MethodInfo m;
            try
            {
                m = t.GetMethod(strMethod， eFlags);
                if (m == null)
                {
                    throw new ArgumentException("There is no method '" +
                        strMethod + "' for type '" + t.ToString() + "'.");
                }
                               
                object objRet = m.Invoke(objInstance， aobjParams);
                return objRet;
            }
            catch
            {
                throw;
            }
        }

    } // end of class

} // end of namespace