进程管理器

实现效果：

　　

知识运用：

　　Process类的Kill方法 

　　public void Kill ()　　　　//用来立刻停止关联的进程

　　PriorityClass属性　　　　//获取或设置关联进程的总体优先级类别

　　public ProcessPriorityClass PriorityClass { get; set; }

　　

实现代码：

        //定义添加方法
        private void getProcessInfo()
        {
            listView1.Items.Clear();
            Process[] myProcess = Process.GetProcesses();
            string[] Minfo = new string[6];
            foreach (Process pro in myProcess)
            {
                Minfo[0] = pro.ProcessName;
                Minfo[1] = pro.Id.ToString();
                Minfo[2] = pro.Threads.Count.ToString();
                Minfo[3] = pro.BasePriority.ToString();
                Minfo[4] = (pro.WorkingSet / 1024) + "K";
                Minfo[5] = (pro.VirtualMemorySize / 1024) + "k";
                ListViewItem item = new ListViewItem(Minfo);
                listView1.Items.Add(item);
            }
            this.toolStripStatusLabel1.Text ="进程总数: "+ Process.GetProcesses().Count();
        }
        //设置进程优先级
        private void setBasePriority(int n)
        {
            Process[] prs = Process.GetProcessesByName(listView1.SelectedItems[0].Text);
            switch (n)
            {
                case 1:prs[0].PriorityClass=ProcessPriorityClass.Idle; break;           //低优先级
                case 2:prs[0].PriorityClass=ProcessPriorityClass.Normal; break;         //标准
                case 3:prs[0].PriorityClass=ProcessPriorityClass.High; break;           //高
                case 4:prs[0].PriorityClass=ProcessPriorityClass.RealTime; break;       //实时
                case 5:prs[0].PriorityClass=ProcessPriorityClass.AboveNormal; break;    //高于标准
                case 6:prs[0].PriorityClass = ProcessPriorityClass.BelowNormal; break;  //低于标准
            }
            getProcessInfo();
        }
        //初始化
        private void Form1_Load(object sender, EventArgs e)
        {
            getProcessInfo();
        }
        private void 结束进程ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count > 0)
            {
                try
                {
                    if (MessageBox.Show("警告:终止进程会导致不希望发生的结果，
包括数据丢失和系统不稳定。在被终止前，
进程将没有机会保存其状态和数据。确认
要终止进程吗？",
                        "任务管理器警告", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)
                    {
                        Process[] ps = Process.GetProcessesByName(listView1.SelectedItems[0].Text);
                        foreach(Process p in ps)
                        p.Kill();
                        getProcessInfo();
                    }
                }
                catch (Exception)
                {
                    string total = listView1.SelectedItems[0].Text;
                    Process[] prs = Process.GetProcessesByName(total);
                    Process myProcess = new Process();
                    myProcess.StartInfo.FileName="cmd.exe";
                    myProcess.StartInfo.UseShellExecute = false;
                    myProcess.StartInfo.CreateNoWindow = true;
                    myProcess.StartInfo.RedirectStandardInput = true;
                    myProcess.StartInfo.RedirectStandardOutput = true;
                    myProcess.StartInfo.RedirectStandardError = true;
                    //执行关闭命令
                    myProcess.Start();
                    myProcess.StandardInput.WriteLine("TASKKILL /f /pid "+prs[0].Id);
                    myProcess.StandardInput.WriteLine("exit");
                    getProcessInfo();
                  }
            }
        }
        private void 刷新ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            getProcessInfo();
        }
        private void 实时ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            setBasePriority(4);
        }
        private void 高ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            setBasePriority(3);
        }
        private void 高于标准ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            setBasePriority(5);
        }
        private void 标准ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            setBasePriority(2);
        }
        private void 低于标准ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            setBasePriority(6);
        }
        private void 低ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            setBasePriority(1);
        }
        //实现对应选项是否可用
        private void contextMenuStrip1_MouseEnter(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count == 0)
                设置优先级ToolStripMenuItem.Enabled = false;
            else
                设置优先级ToolStripMenuItem.Enabled = true;
        }