c#自制抽奖小程序

        #region 第一部分界面设计
        const int N = ;
        Button button = new Button();
        Image[] images = new Image[N];
        PictureBox[] pictures = new PictureBox[N];
        int[] dx = new int[N] { , , , , -, -, ,  };
        int[] dy = new int[N] { , , , , , , -, - };
        private void Form1_Load(object sender, EventArgs e)
        {
            InitialImage();
            InitialSurface();//初始化窗体界面
        }
        //添加图片
        private void InitialImage()
        {
            images[] = Resources.保温杯;
            images[] = Resources.体重秤;
            images[] = Resources.x1;
            images[] = Resources.台灯;
            images[] = Resources.耳机;
            images[] = Resources.x2;
            images[] = Resources.电动牙刷;
            images[] = Resources.时钟;
            this.BackgroundImage = Resources.formbg;
        }
        //初始化界面
        private void InitialSurface()
        {
            Panel pa = new Panel();
            pa.Size = new System.Drawing.Size(, );
            pa.BackgroundImage = Resources.bga1;
            pa.BackgroundImageLayout = ImageLayout.Stretch;
            pa.Location = new Point(, );
            pa.BackColor = Color.Transparent;
            pa.TabIndex = ;
            this.Controls.Add(pa);
            int x = , y = ;
            for (int i = ; i < N; i++)
            {
                x += dx[i];
                y += dy[i];
                PictureBox box = new PictureBox();
                box.Size = new Size(, );
                box.Location = new Point(x, y);
                box.Image = images[i];
                box.SizeMode = PictureBoxSizeMode.StretchImage;
                box.BorderStyle = BorderStyle.FixedSingle;
                box.Padding = new Padding();
                box.BackColor = Color.White;
                pictures[i] = box;
                pa.Controls.Add(box);
            }
            button.Text = "开始" + "\r\n" + "抽奖";
            button.Font = new Font("宋体", , FontStyle.Bold);
            button.Size = new Size(, );
            button.Location = new Point(, );
            button.Click += Button_Click;
            pa.Controls.Add(button);

            PictureBox box1 = new PictureBox();
            box1.Image = Resources.bgGIF;
            box1.SizeMode = PictureBoxSizeMode.StretchImage;
            box1.BorderStyle = BorderStyle.None;
            box1.Size = new Size(, );
            box1.Location = new Point(, );
            this.Controls.Add(box1);
            this.MaximizeBox = false;
            this.BackgroundImageLayout = ImageLayout.Stretch;
            this.AutoSizeMode = AutoSizeMode.GrowAndShrink;
        }
        #endregion

第一部分界面设计

界面效果如下：

实现旋转是使用的改变控件大小，背景颜色(把padding设置4可以看见背景颜色)。

 Random random = new Random();
         SoundPlayer sp = new SoundPlayer(Resources.Untitled_Project);
         int circle;
         int index;
         int stopNum;
         bool flag = true;//奇数和偶数的标志，为true表示偶数
         private void Button_Click(object sender, EventArgs e)
         {
             circle = random.Next(, );//随机产生旋转的圈数
             stopNum = random.Next(, );//随机确定选择抽中奖品的下标
             button.Enabled = false;
             time.Interval = ;
             index = ;
             flag = true;
             sp.Play();
             time.Start();
         }

         private void time_Tick(object sender, EventArgs e)
         {
             if (flag)//放大picturebox，实现转动效果
             {
                 pictures[index].Size = new Size(, );
                 pictures[index].BackColor = Color.YellowGreen;
                 flag = false;
             }
             else if (flag == false)//将原来的picturebox缩放回原来的尺寸
             {
                 pictures[index].Size = new Size(, );
                 pictures[index].BackColor = Color.White;
                 index++;
                 flag = true;
             }
             if (index == )
             {
                 index = ;
                 circle -= circle >  ?  : ;//每次转动8次，旋转的圈数-1
             }
             //倒数两圈慢
             time.Interval = circle >  ?  : ;
             if (circle ==  && index == stopNum)
             {
                 pictures[index].Size = new Size(, );
                 pictures[index].BackColor = Color.YellowGreen;
                 pictures[index].Location = new Point(pictures[index].Location.X - , pictures[index].Location.Y - );
                 StopRotate(index);
                 pictures[index].Size = new Size(, );
                 pictures[index].BackColor = Color.White;
                 pictures[index].Location = new Point(pictures[index].Location.X + , pictures[index].Location.Y + );
             }
         }

旋转代码

停止再加上一个简单的概率会有点不了不流畅。

  private void StopRotate(int sum)
         {
             string message = null;
             switch (index)
             {
                 case : if (random.Next(, ) == stopNum) message = "恭喜获取保温杯一个"; else { circle = ; stopNum = ; } break;//1/2  14  7%
                 case : if (random.Next(, ) == stopNum) message = "恭喜获取体重秤一个"; else { circle = ; stopNum = ; } break;//1/3  21  4%
                 case : message = "谢谢惠顾"; break;
                 case : if (random.Next(, ) == stopNum) message = "恭喜获取台灯一个"; else { circle = ; stopNum = ; } break;//1/4   28   3%
                 case : if (random.Next(, ) == stopNum) message = "恭喜获取耳机一个"; else { circle = ; stopNum = ; } break;//1/4  28   3%
                 case : message = "谢谢惠顾"; break;
                 case : if (random.Next(, ) == stopNum) message = "恭喜获取电动牙刷一个"; else { circle = ; stopNum = ; } break;//1/2  1/14   7&
                 case : if (random.Next(, ) == stopNum) message = "恭喜获取时钟一个"; else { circle = ; stopNum = ; } break;//1/3   1/21    4%
             }
             if (message != null)
             {
                 sp.Stop();
                 time.Stop();//先关闭定时器
                 MessageBox.Show(message);
                 this.button.Enabled = true;
             }
         }

停止代码

简单的旋转程序就完成了。