C#怎么实现二个窗体一起拖动

Question

C#怎么实现二个窗体一起拖动(二个不同的窗体)

Answer 1

Form有个LocationChanged事件
里面让两个Form的相对位置保持不变即可

Answer 2

添加2个Form,Form1和Form2,然后在Form1写如下代码：        private Form2 frm = new Form2();
        private void Form1_LocationChanged(object sender, EventArgs e)
        {
            if (frm.Visible==true)
            {
                frm.SetDesktopLocation(this.Location.X, this.Location.Y+this.Height);
            }
        }        private void Form1_Load(object sender, EventArgs e)
        {
            frm.Show();
        }

Answer 3

如果你想两个窗体，无论拖动哪个窗体另一个窗体也跟随移动，则需要少许改动：
Form1.cs:        private Form2 frm;
        private void Form1_LocationChanged(object sender, EventArgs e)
        {
            if (frm!=null)
            {
                frm.SetDesktopLocation(this.Location.X, this.Location.Y+this.Height);
            }
        }        private void Form1_Load(object sender, EventArgs e)
        {
            frm = new Form2(this);
            frm.Show();
        }        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (frm != null)
                frm.WindowState = this.WindowState;
        }
Form2.cs:        private Form1 frm;
        public Form2(Form1 form)
        {
            InitializeComponent();
            frm = form;
        }        private void Form2_LocationChanged(object sender, EventArgs e)
        {
            if (frm != null)
            {
                if (this.WindowState == FormWindowState.Normal)
                    frm.SetDesktopLocation(this.Location.X, this.Location.Y - this.Height);
                else
                    frm.WindowState = this.WindowState;
            }
        }        private void Form2_SizeChanged(object sender, EventArgs e)
        {
            if (frm != null)
                frm.WindowState = this.WindowState;
        }不过有一个缺点就是，一旦你更改1个窗体的高度使2个窗体高度不一致，那么再移动的时候就会出问题。