c# 随学随记（-）

   1.this.toolStrip1.Dock = DockStyle.Top;/// 菜单

   2.  一。    private void timer1_Tick(object sender, EventArgs e)
                 {//显示当前系统时间
                                 this.toolStripStatusLabel1.Text= "当前系统时间是："+System.DateTime.Now.ToLongTimeString();
                   }

                private void Form1_Load(object sender, EventArgs e)
                  {//启动定时器
                         this.timer1.Start();
                     }

                 private void Form1_FormClosed(object sender, FormClosedEventArgs e)
                       {//关闭定时器
                            this.timer1.Stop();
                         }

 4.使用放像箭头

  private void Form1_KeyDown(object sender, KeyEventArgs e)
        {//移动方向键浏览图像
            if (this.MyBmp == null)
                return;
            switch (e.KeyValue)
            {
                case 37:
                    if (MyXPos < 0)
                        this.MyXPos += 10;
                    break;
                case 38:
                    if (MyYPos < 0)
                        this.MyYPos += 10;
                    break;
                case 39:
                    if (MyXPos > -(MyBmp.Width - this.panel1.Width ))
                        this.MyXPos -= 10;
                    break;
                case 40:
                    if (MyYPos > -(MyBmp.Height - this.panel1.Height))
                        this.MyYPos -= 10;
                    break;
            }
            this.Refresh();
        }

5.设置“关闭”按钮响应键盘Esc键单击操作      

  private void Form1_Load(object sender, EventArgs e)
        {//设置“关闭”按钮响应键盘Esc键单击操作
            this.CancelButton= this.button2;        
        }