Winform异步解决窗体耗时操作（Action专门用于无返回值，Func专门用于有返回值）

http://blog.csdn.net/config_man/article/details/25578767

#region 调用timer控件实时查询开关机时间
private void timer1_Tick(object sender, EventArgs e)
{
    string sql = "SELECT startTime,endTime,AMTusername,AMTpassword,AMTip FROM AmtTiming at, AmtComputer ac WHERE at.cid = ac.id";
    List<TimingBean> list = new Database().getRS(sql);

    if (list != null && list.Count > 0)
    {
        foreach (TimingBean tb in list)
        {
            string startTime = tb.StartTime;
            string endTime = tb.EndTime;
            string AMTusername = tb.AMTUsername;
            string AMTpassword = tb.AMTPassword;
            string AMTip = tb.AMTIp;

            string now = DateTime.Now.ToShortTimeString();
            if (startTime == now)
            {
                Action<string, string, string, bool> action = new Action<string, string, string, bool>(StartOrShutDown);
                action.BeginInvoke(AMTusername, AMTpassword, AMTip, true, null, null);
            }
            else if (endTime == now)
            {
                Action<string, string, string, bool> action = new Action<string, string, string, bool>(StartOrShutDown);
                action.BeginInvoke(AMTusername, AMTpassword, AMTip, false, null, null);
            }
        }
    }
}
private void StartOrShutDown(string user, string pass, string ip, bool isStart)
{
    AmtRemoteAControl amtControl = new AmtRemoteAControl();
    if (isStart)
    {
        //如果开机不成功，则让其再执行一次
        try
        {
            amtControl.SendPowerOnCmd(ip, user, pass);
        }
        catch
        {
            try
            {
                amtControl.SendPowerOnCmd(ip, user, pass);
            }
            catch (Exception e)
            {
                MessageBox.Show("终端设备：" + ip + "自动开机失败。异常信息：" + e.Message);
            }
        }
    }
    else
    {
        //如果关机不成功，则让其再执行一次
        try
        {
            amtControl.SendPowerOffCmd(ip, user, pass);
        }
        catch
        {
            try
            {
                amtControl.SendPowerOffCmd(ip, user, pass);
            }
            catch (Exception e)
            {
                MessageBox.Show("终端设备：" + ip + "自动关机失败。异常信息：" + e.Message);
            }
        }
    }

}
#endregion

#region 开关机、重启 "查询按钮"
bool has = false;
private void button1_Click(object sender, EventArgs e)
{

    //获得省份索引和某个市的文本
    int index = this.comboBox1.SelectedIndex;

    if (0 == index)
    {
        MessageBox.Show("请选择区域！"); return;
    }
    else
    {
        #region 获取选择的区域
        this.buttonStart.Enabled = false;
        this.buttonShutdown.Enabled = false;
        this.buttonReStart.Enabled = false;

        string place = this.comboBox1.Text;              //省

        int city_index = this.comboBox2.SelectedIndex;//市
        string county = this.comboBox3.Text;        //区县

        //如果城市有选择
        if (city_index != 0)
        {
            place = place + this.comboBox2.Text;
        }
        //如果区县有选择
        if ((null != county) && (!((string.Empty).Equals(county))) && (!"--请选择--".Equals(county)))
        {
            place = place + county;
        }
        #endregion

        try
        {
            #region 将查到的设备信息绑定到数据表格
            //将查到的设备信息绑定到数据表格
            //string sql = "SELECT '' as '选择',cp.en '设备编号',cp.ip '设备IP',cp.place '设备地址', cp.AMTusername '用户名',cp.AMTpassword '密码',cp.AMTip 'IP',cp.id '主键',cp.status '状态' FROM AmtComputer cp WHERE cp.place like '%" + place + "%'";
            string sql = "SELECT cp.en '设备编号',cp.ip '设备IP',cp.place '设备地址', cp.AMTusername '用户名',cp.AMTpassword '密码',cp.AMTip 'IP',cp.id '主键',cp.status '状态' FROM AmtComputer cp WHERE cp.place like '%" + place + "%'";

            Database db = new Database();
            DataSet ds = db.getDS(new DataSet(), sql);
            DataTable table = ds.Tables["data"];
            this.bindingSource1.DataSource = table;
            this.dataGridView1.DataSource = this.bindingSource1;

            if(!has)
            {
                //添加复选框
                DataGridViewCheckBoxColumn box = new DataGridViewCheckBoxColumn();
                box.HeaderText = "选择";
                box.Name = "选择";
                this.dataGridView1.Columns.Insert(0, box);
                has = true;
            }

            //设置部分列为不可见状态
            this.dataGridView1.Columns["用户名"].Visible = false;//AMT用户名
            this.dataGridView1.Columns["密码"].Visible = false;//AMT密码
            this.dataGridView1.Columns["IP"].Visible = false;//AMT设备ip
            this.dataGridView1.Columns["主键"].Visible = false;//主键

            this.dataGridView1.Columns["选择"].Width = 60;//复选框
            this.dataGridView1.Columns["设备编号"].Width = 100;//设备编号
            this.dataGridView1.Columns["设备IP"].Width = 140;//设备IP
            this.dataGridView1.Columns["设备地址"].Width = 160;//设备地址
            this.dataGridView1.Columns["状态"].Width = 180;//状态

            #endregion

            //this.labelState.Text = "正在获取设备状态，请稍后...";
            //this.Refresh();
            int count = table.Rows.Count;
            for (int i = 0; i < count; i++)
            {
                string username = table.Rows[i]["用户名"].ToString(); //amt用户名
                string password = table.Rows[i]["密码"].ToString(); //amt密码
                string host = table.Rows[i]["IP"].ToString();     //amtIP地址

                this.dataGridView1.Rows[i].Cells["状态"].Value = "正在获取终端状态...";
                this.dataGridView1.Rows[i].Cells["状态"].Style.ForeColor = Color.Red;
                this.dataGridView1.Rows[i].Cells["状态"].Style.Font = new Font("宋体", 11F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));

                Func<int, string, string, string, string> func = new Func<int, string, string, string, string>(getPowerState);
                func.BeginInvoke(i, username, password, host,
                                                        (result) =>
                                                        {
                                                            string state = func.EndInvoke(result);
                                                            this.BeginInvoke(new Action<string>(setStateValue), state);
                                                        }, null);
            }
        }
        catch (Exception ee) { MessageBox.Show(ee.Message); }
    }
}
private void setStateValue(string state)
{
    string[] array = state.Split(',');
    this.dataGridView1.Rows[Convert.ToInt16(array[0])].Cells["状态"].Value = array[1];
    this.buttonStart.Enabled = true;
    this.buttonShutdown.Enabled = true;
    this.buttonReStart.Enabled = true;
}
#endregion

#region 获取amt设备的当前电源状态
private string getPowerState(int index,string username, string password, string host)
{
    ConnectionInfo info = new ConnectionInfo(host, username, password, false,
                                           string.Empty, ConnectionInfo.AuthMethod.Digest,
                                           null, null);
    DotNetWSManClient wsman = new DotNetWSManClient(info);

    RemoteControlApi api = new RemoteControlApi(wsman);
    try
    {
        CIM_AssociatedPowerManagementService service = api.GetCurrentPowerState(true);
        ushort state = service.PowerState;
        if (state == 2)
        {
            return index + ",开机";
        }
        else if (state == 8)
        {
            return index + ",关机";
        }
    }
    catch
    {
        try
        {
            CIM_AssociatedPowerManagementService service = api.GetCurrentPowerState(false);
            ushort state = service.PowerState;
            if (state == 2)
            {
                return index + ",开机";
            }
            else if (state == 8)
            {
                return index + ",关机";
            }
        }
        catch (Exception e2)
        {
            return index + "," + e2.Message;
        }
    }
    return index + ",未知";
}
#endregion