窗体内的控件随窗体的大小改变控件大小

  public Form1()

        {

            InitializeComponent();

            int count = this.Controls.Count * 2+2;

            float[] factor = new float[count];

            int i = 0;

            factor[i++] = Size.Width;

            factor[i++] = Size.Height;

            foreach(Control ctrl in this.Controls)

            {

                factor[i++] = ctrl.Location.X / (float)Size.Width;

                factor[i++] = ctrl.Location.Y / (float)Size.Height;

                ctrl.Tag = ctrl.Size;

            }

            Tag = factor;

        }



        private void Form1_Resize(object sender, EventArgs e)

        {

            float[] scale = (float[])Tag;

            int i = 2;



            foreach (Control ctrl in this.Controls)

            {

                ctrl.Left = (int)(Size.Width * scale[i++]);

                ctrl.Top = (int)(Size.Height * scale[i++]);

                ctrl.Width = (int)(Size.Width / (float)scale[0] * ((Size)ctrl.Tag).Width);

                ctrl.Height = (int)(Size.Height / (float)scale[1] * ((Size)ctrl.Tag).Height);  



                //每次使用的都是最初始的控件大小，保证准确无误。

            }

        }