C# winform 窗体控件随窗体大小改变

转自：http://www.cnblogs.com/jason-liu-blogs/archive/2012/10/28/2743243.html

PS：1、主要使用控件的Tag属性，如果自己的控件Tag已用，请注意。

         2、如果窗体内有动态生成的控件，生成完毕后请setTag。

        private void setTag(Control cons)
        {
            foreach (Control con in cons.Controls)
            {
                con.Tag = con.Width + ":" + con.Height + ":" + con.Left + ":" + con.Top + ":" + con.Font.Size;
                if (con.Controls.Count > 0)
                    setTag(con);
            }
        }

        private float X;
        private float Y;

        private void setControls(float newx, float newy, Control cons)
        {
            foreach (Control con in cons.Controls)
            {
                string[] mytag = con.Tag.ToString().Split(new char[] { ':' });
                float a = Convert.ToSingle(mytag[0]) * newx;
                con.Width = (int)a;
                a = Convert.ToSingle(mytag[1]) * newy;
                con.Height = (int)(a);
                a = Convert.ToSingle(mytag[2]) * newx;
                con.Left = (int)(a);
                a = Convert.ToSingle(mytag[3]) * newy;
                con.Top = (int)(a);
                Single currentSize = Convert.ToSingle(mytag[4]) * Math.Min(newx, newy);
                con.Font = new Font(con.Font.Name, currentSize, con.Font.Style, con.Font.Unit);
                if (con.Controls.Count > 0)
                {
                    setControls(newx, newy, con);
                }
            }

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Resize += new EventHandler(Form1_Resize);

            X = this.Width;
            Y = this.Height;

            setTag(this);
            Form1_Resize(new object(), new EventArgs());//x,y可在实例化时赋值
        }

        private void Form1_Resize(object sender, EventArgs e)
        {
            float newx = (this.Width) / X;
            float newy = this.Height / Y;
            setControls(newx, newy, this);
            this.Text = this.Width.ToString() + " " + this.Height.ToString();
        }