Services

using System;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.ServiceProcess;
using System.Windows.Forms;

namespace DIYService
{
    public partial class FormServices : Form
    {
        #region 自定义对象
        private readonly Stopwatch stopWatch = new Stopwatch();
        private readonly ServiceController currentService = new ServiceController();
        #endregion

        #region AnimateWindow
        [DllImport("user32.dll", EntryPoint = "AnimateWindow")]
        private static extern bool AnimateWindow(IntPtr handle, int ms, int flags);
        #endregion

        public FormServices()
        {
            #region
            InitializeComponent();
            this.TopMost = true;          // 前端显示。
            this.ShowInTaskbar = false;  // 在 Windows 任务栏中隐藏窗体。
            this.HelpButton = true;     // 显示“帮助”按钮。
            this.MaximizeBox = false;  // 隐藏“最大化”按钮。
            this.MinimizeBox = false; // 隐藏“最小化”按钮。
            this.AutoSizeMode = AutoSizeMode.GrowAndShrink;   // 禁用手动调整大小。
            this.SizeGripStyle = SizeGripStyle.Hide;         // 隐藏调整大小手柄。
            this.FormBorderStyle = FormBorderStyle.Sizable; // 可调整大小的边框。
            this.StartPosition = FormStartPosition.Manual; // 窗体的位置由 Location 属性确定。
            this.DesktopLocation = new Point(Screen.GetWorkingArea(this).Size - this.Size);
            notifyService.Text = AppDomain.CurrentDomain.FriendlyName;
            currentService.MachineName = Environment.MachineName;
            var query = from service in ServiceController.GetServices()
                        let DN = service.DisplayName
                        let SN = service.ServiceName
                        let ST = (service.ServiceType == ServiceType.Win32OwnProcess)
                        where ST
                        orderby DN ascending
                        select new { DN, SN };
            cmbServiceName.Sorted = false; // 绑定数据时，禁用排序。
            cmbServiceName.ValueMember = "SN"; // 绑定数据之前赋值。
            cmbServiceName.DataSource = query.ToList();
            cmbServiceName.DisplayMember = "DN";
            cmbMachineName.SelectedIndex = cmbMachineName.Items.Add(Environment.MachineName);
            #endregion
        }

        #region Service.Refresh
        private void timerStatus_Tick(object sender, EventArgs e)
        {
            currentService.Refresh(); // 刷新当前服务属性值。
            switch (currentService.Status)
            {
                case ServiceControllerStatus.Running:
                    stopWatch.Stop();
                    btnStart.Enabled = false;
                    btnPause.Enabled = currentService.CanPauseAndContinue;
                    btnStop.Enabled = currentService.CanStop;
                    btnPause.Text = "暂停(&P)";
                    break;
                case ServiceControllerStatus.Paused:
                    stopWatch.Stop();
                    btnStart.Enabled = false;
                    btnPause.Enabled = true;
                    btnStop.Enabled = false;
                    btnPause.Text = "继续(&C)";
                    break;
                case ServiceControllerStatus.Stopped:
                    stopWatch.Stop();
                    btnStart.Enabled = true;
                    btnPause.Enabled = false;
                    btnStop.Enabled = false;
                    break;
            }
            labelStatus.Text = string.Format("Status：{0}", currentService.Status);
            labelTime.Text = string.Format("in {0:#,##0} ms", stopWatch.ElapsedMilliseconds);
        }
        #endregion

        #region Service.ReServiceName
        private void cmbServiceName_SelectedIndexChanged(object sender, EventArgs e)
        {
            timerStatus.Stop();
            currentService.ServiceName = Convert.ToString(cmbServiceName.SelectedValue);
            timerStatus.Start();
        }
        #endregion

        #region Service.ReStatus
        private void buttonReStatus_Click(object sender, EventArgs e)
        {
            stopWatch.Reset();
            stopWatch.Start();
            currentService.Refresh();
            switch (currentService.Status)
            {
                case ServiceControllerStatus.Stopped:
                    try
                    {
                        currentService.Start(); // net start ServiceName
                    }
                    catch (Exception se)
                    {
                        MessageBox.Show(this, se.Message, currentService.DisplayName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    }
                    break;
                case ServiceControllerStatus.Running:
                    if (btnPause.Equals(sender))
                        currentService.Pause(); // net pause ServiceName
                    else
                        currentService.Stop(); // net stop ServiceName
                    break;
                case ServiceControllerStatus.Paused:
                    currentService.Continue(); // net continue ServiceName
                    break;
            }
        }
        #endregion

        #region FormVisible
        private void visibleMenuItem_Click(object sender, EventArgs e)
        {
            this.Visible = !this.Visible;
        }

        protected override void OnVisibleChanged(EventArgs e)
        {
            base.OnVisibleChanged(e);
            if (this.Visible)
            {
                AnimateWindow(this.Handle, 1000, 0x20010); // 居中逐渐显示。
                this.Activate(); // 激活窗体并给予它焦点。
            }
            else
            {
                AnimateWindow(this.Handle, 1000, 0x10010); // 居中逐渐隐藏。
                notifyService.ShowBalloonTip(10, notifyService.Text, "    在系统托盘中运行", ToolTipIcon.Info);
            }
        }
        #endregion

        #region FormExit
        private void exitMenuItem_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show(this, "您真的要退出“服务控制器”系统吗？", "系统询问", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
                Application.Exit();
        }

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            base.OnFormClosing(e);
            switch (e.CloseReason)
            {
                case CloseReason.ApplicationExitCall:
                    AnimateWindow(this.Handle, 1000, 0x10010); // 居中逐渐隐藏。
                    notifyService.Visible = false;
                    currentService.Close();
                    break;
                case CloseReason.UserClosing:
                    e.Cancel = true;
                    this.Visible = false;
                    break;
            }
        }
        #endregion

        #region HelpButton
        protected override void OnHelpButtonClicked(System.ComponentModel.CancelEventArgs e)
        {
            base.OnHelpButtonClicked(e);
            e.Cancel = true;
            Process.Start("services.msc").Close();
        }
        #endregion

        #region WndProc
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == 0xA1 && m.WParam.ToInt32() == 2)
                return;
            base.WndProc(ref m);
        }
        #endregion
    }
}