Form size changed event handler : Form Event : GUI Windows Forms C# Examples

    
using  System;
using  System.Drawing;
using  System.Windows.Forms;

public  class  ControlDynamicSizeLocation  :  Form
{
    private  Button  btnShow  =  new  Button();
    private  Label  lbl  =  new  Label();
    int  xButtonSize,  yButtonSize;

    public  ControlDynamicSizeLocation()
    {
        btnShow.Parent  =  this;
        btnShow.Text  =  "Show  Button  Properties";

        Size  =  new  Size(400,400);

        xButtonSize  =  (int)(Font.Height  *  .75)  *  btnShow.Text.Length;
        yButtonSize  =  Font.Height  *  2;
        btnShow.Size  =  new  Size(xButtonSize,  yButtonSize);
        btnShow.Click  +=  new  System.EventHandler(btnShow_Click);

        lbl.Text  =  "Control  Size  and  Location  -  Dynamic";
        lbl.AutoSize  =  true;
        lbl.Parent  =  this;

        OnResize(EventArgs.Empty);
    }

    protected  override  void  OnResize(EventArgs  e)
    {
        base.OnResize(e);

        int  xPosition  =  (int)(this.ClientSize.Width  /  2)  -  (int)(xButtonSize  /  2);
        int  yPosition  =  (int)(this.ClientSize.Height  /  2)  -  (int)(yButtonSize  /  2);
        btnShow.Location  =  new  Point(xPosition,  yPosition);
    }

    static  void  Main()  
    {
        Application.Run(new  ControlDynamicSizeLocation());
    }

    private  void  btnShow_Click(object  sender,  EventArgs  e)
    {
        Console.WriteLine("Button  Bottom:"  +  btnShow.Bottom.ToString());
        Console.WriteLine("Button  Top:"  +  btnShow.Top.ToString()  );
        Console.WriteLine("Button  Left:"  +  btnShow.Left.ToString()  );
        Console.WriteLine("Button  Right:"  +  btnShow.Right.ToString()  );
        Console.WriteLine("Button  Location:"  +  btnShow.Location.ToString()  );
        Console.WriteLine("Button  Width:"  +  btnShow.Width.ToString()  );
        Console.WriteLine("Button  Height:"  +  btnShow.Height.ToString()  );
        Console.WriteLine("Button  Size:"  +  btnShow.Size.ToString()  );
        Console.WriteLine("Button  ClientSize:"  +  btnShow.ClientSize.ToString()  );
        Console.WriteLine("Font:"  +  btnShow.Font.ToString());
    }
}