c#,timer,winform,notifyicon,contextMenuStrip,定时查杀指定的进程，时间间隔可以设置， Virus

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;

namespace WindowsApp
{
    public partial class Form1 : Form
    {
        private string proName = string.Empty;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            proName = txtProcess.Text.Trim();
            timer1.Interval =Convert.ToInt32( this.numericUpDown1.Value) * 1000;

            if (timer1.Enabled == false)
                timer1.Enabled = true;
            this.Hide();
            notifyIcon1.Visible = true;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            lblSecond.Text = Convert.ToString(this.numericUpDown1.Value);
            lblSecond.Refresh();

            if (timer1.Enabled == false)
                timer1.Enabled = true;
        }
     

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (!string.IsNullOrEmpty(proName))
            {
                foreach (Process p in Process.GetProcesses())
                {
                    if (p.ProcessName == proName)
                    {
                        p.Kill();

                        return;
                    }
                }
            }
        }

        private void MenuItemOpen_Click(object sender, EventArgs e)
        {
            if(timer1.Enabled==false)
            timer1.Enabled = true;
        }

        private void MenuItemClose_Click(object sender, EventArgs e)
        {
            if(timer1.Enabled)
            timer1.Enabled = false;
        }

        private void MenuItemExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            lblSecond.Text = Convert.ToString(this.numericUpDown1.Value);
            lblSecond.Refresh();
        }

        private void MenuItemSetting_Click(object sender, EventArgs e)
        {
            this.Show();
            //foreach (Form form in Application.OpenForms)
            //{
            //    if (form.Name == "Form1")
            //    {
            //        form.Activate();
            //        form.WindowState = FormWindowState.Normal;
            //        form.StartPosition = FormStartPosition.CenterScreen;
                   
            //        return;
            //    }
            //}
        }

        
    }
}