C#编写自动关机程序复习的知识

首先一个程序第一要素是logo

在设置里面可以设置程序图标，在ICON里设置。

ICON图标可以在网上下载。

这些都是表面功夫

程序中涉及到Buton、Label、Timer、Notiflcon控件

Button按钮控件，可以设计点击事件

如下所示：

private void button1_Click(object sender, EventArgs e)
        {
           // int shi, fen, miao;
            if (Flag_True == 0)
            {
                Flag_True = 1;
            }
            else
            {
                button1.Text = "确定";
                label6.Text = " ";
                label7.Text = " ";
                label5.Text = " ";
                //label1.Text = "定时关机设置";
                Flag_True = 0;
            }
            shi = (int)numericUpDown3.Value;
            fen = (int)numericUpDown2.Value;
            miao = (int)numericUpDown1.Value;
            time_set = shi * 3600 + fen * 60 + miao;
        }

 label控件操作简单

能够显示字符，并且其成员有text，可以随时更改文本

timer控件相当于嵌入式中的定时器，在属性中行为一栏中设置ENABLE 并且设置interval时间间隔500就是半秒。

private void timer1_Tick(object sender, EventArgs e)
        {
            Int32 time_now;
            Int32 extra;
            if (Flag_True == 1)
            {
                if (DateTime.Now.Minute == fen && DateTime.Now.Hour == shi && DateTime.Now.Second == miao)
                {
                    button1.Text = "取消";
                    label6.Text = "剩余关机时间";
                    label7.Text = "秒";
                    label5.Text = "0";
                    System.Diagnostics.Process.Start("shutdown","-s -t 0");//关机程序
                }//shutdown
                else
                {
                    time_now = DateTime.Now.Second + DateTime.Now.Minute * 60 + DateTime.Now.Hour * 3600;
                    extra = time_set - time_now;
                    if (extra > 0)
                    {
                        button1.Text = "取消";
                        label6.Text = "剩余关机时间";
                        label7.Text = "秒";
                        //extra/3600
                        label5.Text = extra.ToString();
                    }
                    else
                    {
                        Flag_True = 0;
                    }
                        
                    
                }
            }
        }

 上面我每隔半秒进入中断一次，判断，如果已经设置过定时关机，就判断是否到达关机时间，并显示还剩多少秒关机。如果没有设置定时关机，就不显示。

其中button1和Label的text都可以随时更改。

基本功能设置完成

接下来还有一个最小化到托盘的设置

用到Notiflcon控件

此控件设置最小化图标，在设置里可以设置icon图标。

他带有的事件有鼠标单击，鼠标双击，单击，双击。

private void notifyIcon1_MouseClick(object sender, MouseEventArgs e)
        {
            this.Visible = true; 
            this.WindowState = FormWindowState.Normal; 
            this.notifyIcon1.Visible = false; 
        }

 上述我设置了鼠标单击，代码里是恢复可视化，正常窗口。

再之得设置程序最小化时隐藏在下边

private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized) 
            { 
                this.Hide(); 
                this.notifyIcon1.Visible = true; 
            } 
        }

 上述就是一个关机程序，自己做着玩的。。

整体构架如下图所示。

namespace 关机任务管理V1._0
{
    public partial class Form1 : Form
    {
        int shi, fen, miao;
        Int32 time_set;
        int Flag_True = 0;
        public Form1()
        {
            
            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            
        }

        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            if (numericUpDown1.Value == -1)
                numericUpDown1.Value = 60;
            else if (numericUpDown1.Value == 61)
                numericUpDown1.Value = 0;
        }

        private void numericUpDown2_ValueChanged(object sender, EventArgs e)
        {
            if (numericUpDown2.Value == -1)
                numericUpDown2.Value = 60;
            else if (numericUpDown2.Value == 61)
                numericUpDown2.Value = 0;
        
        }

        private void numericUpDown3_ValueChanged(object sender, EventArgs e)
        {
            if (numericUpDown3.Value == 25)
                numericUpDown3.Value = 0;
            else if (numericUpDown3.Value == -1)
                numericUpDown3.Value = 24;
        }

        private void button1_Click(object sender, EventArgs e)
        {
           // int shi, fen, miao;
            if (Flag_True == 0)
            {
                Flag_True = 1;
            }
            else
            {
                button1.Text = "确定";
                label6.Text = " ";
                label7.Text = " ";
                label5.Text = " ";
                //label1.Text = "定时关机设置";
                Flag_True = 0;
            }
            shi = (int)numericUpDown3.Value;
            fen = (int)numericUpDown2.Value;
            miao = (int)numericUpDown1.Value;
            time_set = shi * 3600 + fen * 60 + miao;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            Int32 time_now;
            Int32 extra;
            if (Flag_True == 1)
            {
                if (DateTime.Now.Minute == fen && DateTime.Now.Hour == shi && DateTime.Now.Second == miao)
                {
                    button1.Text = "取消";
                    label6.Text = "剩余关机时间";
                    label7.Text = "秒";
                    label5.Text = "0";
                    System.Diagnostics.Process.Start("shutdown","-s -t 0");//关机程序
                }//shutdown
                else
                {
                    time_now = DateTime.Now.Second + DateTime.Now.Minute * 60 + DateTime.Now.Hour * 3600;
                    extra = time_set - time_now;
                    if (extra > 0)
                    {
                        button1.Text = "取消";
                        label6.Text = "剩余关机时间";
                        label7.Text = "秒";
                        //extra/3600
                        label5.Text = extra.ToString();
                    }
                    else
                    {
                        Flag_True = 0;
                    }
                        
                    
                }
            }
        }

        private void label5_Click(object sender, EventArgs e)
        {

        }

        private void label4_Click(object sender, EventArgs e)
        {

        }

        private void label3_Click(object sender, EventArgs e)
        {

        }

        private void label6_Click(object sender, EventArgs e)
        {

        }

        private void notifyIcon1_MouseClick(object sender, MouseEventArgs e)
        {
            this.Visible = true; 
            this.WindowState = FormWindowState.Normal; 
            this.notifyIcon1.Visible = false; 
        }
        //最小化代码
        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized) 
            { 
                this.Hide(); 
                this.notifyIcon1.Visible = true; 
            } 
        }
    }
}

 界面如下：