C#分屏控件用法实例

本文实例中的自定义类picturebox继承于usercontrol，最终实现简单的分屏功能。分享给大家供大家参考之用。具体实现代码如下：

public partial class picturecontrol : usercontrol
{
    public event mouseeventhandler piccontrol_doubleclick;
    private int picnum;
    /// <summary>
    /// 屏幕个数
    /// </summary>
    public int picnum
    {
      get { return picnum; }
      set
      {
        if (value == 4 || value == 6 || value == 9 || value == 12 || value == 16 || value == 20 || value == 25)//只能

是4、6、9、12、16、20、25
        {
          picnum = value;
          this.setpicturebox(this.picnum);
        }
        else
        {
          this.picnum = 12;
          this.setpicturebox(this.picnum);
        }
      }
    }

    public picturecontrol()
    {
      this.picnum = 4;
      initializecomponent();
      this.setpicturebox(this.picnum);
    }

    /// <summary>
    /// 根据个数布局picturebox
    /// </summary>
    /// <param name="num"></param>
    private void setpicturebox(int num)
    {
      this.controls.clear();
      size size = this.size;
      switch (num)
      {
        case 4: this.setpicturebox(2, 2, size); break;
        case 6: this.setpicturebox(2, 3, size); break;
        case 9: this.setpicturebox(3, 3, size); break;
        case 12: this.setpicturebox(3, 4, size); break;
        case 16: this.setpicturebox(4, 4, size); break;
        case 20: this.setpicturebox(4, 5, size); break;
        case 25: this.setpicturebox(5, 5, size); break;
      }
    }

    /// <summary>
    /// 布局picturebox
    /// </summary>
    /// <param name="x">几行</param>
    /// <param name="y">几列</param>
    /// <param name="size">当前控件的大小</param>
    private void setpicturebox(int x, int y,size size)
    {
      int num = 0;
      for (int i = 0; i < x; i++)
      {
        for (int j = 0; j < y; j++)
        {
          picturebox pic = new picturebox();
          pic.sizemode = pictureboxsizemode.zoom;                     //设置自动缩放
          pic.backcolor = color.white;                          //设置背景颜色
          pic.location = new point((size.width / y) * j, (size.height / x) * i);     //设置location
          pic.borderstyle = borderstyle.fixedsingle;                   //设置边框
          pic.mousedoubleclick += new mouseeventhandler(pic_mousedoubleclick);      //订阅控件双击事件
          pic.size = new size(size.width / y, size.height / x);              //设置控件大小   
          pic.tag = num;                                 //设定控件编号即屏幕序号
          this.controls.add(pic);                             //添加
          num++;
        }
      }
    }
    void pic_mousedoubleclick(object sender, mouseeventargs e)
    {
      if (this.piccontrol_doubleclick != null)
      {
        this.piccontrol_doubleclick(sender, e);//将动态添加的控件的双击事件 传向控件体外。
      }
    }
    private void picturecontrol_sizechanged(object sender, eventargs e)
    {
      this.setpicturebox(this.picnum);
    }
    private picturebox getpicbyindex(int index)
    {
      foreach (control c in this.controls)
      {
        if (convert.toint32(c.tag) == index)
        {
          return (picturebox)c;
        }
      }
      picturebox p = new picturebox();
      p.tag = -1;
      return p;
    }
    /// <summary>
    /// 根据屏幕序号设置图像
    /// </summary>
    /// <param name="index">屏幕号</param>
    /// <param name="img">图像</param>
    public void setimagebyindex(int index, image img)
    {
      getpicbyindex(index).image = img;
    }
}

希望本文所述实例对大家c#程序设计有所帮助。