两文件夹内容进行比较

如何比较两文件夹里的内容是否相同? --------------------编程问答-------------------- string[] MyFiles = System.IO.Directory.GetFiles(this.textBox1.Text);
            string[] MyFiles1 = System.IO.Directory.GetFiles(this.textBox2.Text);
            bool b = true;
            if (MyFiles.Length == MyFiles1.Length)
            {
                for (int i = 0; i < MyFiles.Length; i++)
                {
                    if (MyFiles[i].Contains(MyFiles1[i]))
                    {
                        b = true;
                    }
                    else
                    {
                        b = false;
                    }
                }
                if (b)
                {
                    MessageBox.Show("相同!");
                }
                else
                {
                    MessageBox.Show("不相同!");
                }
            }
            else
            {
                MessageBox.Show("两个文件夹里面的文件不同!");
            }

补充：.NET技术 ,  C#