private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
        {
            foreach (System.Diagnostics.Process p in System.Diagnostics.Process.GetProcesses())
            {
                if (p.ProcessName==("ProcessName"))
                {
                    p.Kill();
                }
            }
        }

------解决方案--------------------
探讨

在窗体的FormClosing事件里写


C# code

        private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
        {
            foreach (System.Diagnostics.Process p in System.Diagnostics.……