How to kill/close the EXE's using C#

Below is the code to close word/excel exe uisng C#

Process[] eProcess;
eProcess = System.Diagnostics.Process.GetProcessesByName("EXCEL");
eProcess[0].Kill();


Process[] wProcess;
wProcess = System.Diagnostics.Process.GetProcessesByName("WINWORD");
wProcess[0].Kill();