C# 殺死後台進程

var p = Process.GetProcessesByName("WINWORD");
            if (p.Any())
            {
                for (int i = 0; i < p.Length; i++)
                {
                    p[i].Kill();
                }
            }
            p = Process.GetProcessesByName("EXCEL");
            if (p.Any())
            {
                for (int i = 0; i < p.Length; i++)
                {
                    p[i].Kill();
                }
            }