C#

Form2 form2;
private void button1_Click(object sender, EventArgs e)
       {
           if (form2 == null)
           {
               form2 = new Form2();
               form2.Show();
           }
       }

private void Nodes_MouseMove(object sender, MouseEventArgs e)
{
   if(NodeLocation.BottomCenter=="BottomCenter")
   {
      bottomCenter(n, e.X, e.Y);
   }
   else
   {
      bottomLeft(n, e.X, e.Y);
   } 
}
//Bottom center is perfectly working fun
private void bottomCenter(Nodes n, int x, int y)
{
    Control c = (Control)n.Tag;
    n.Location = new Point(n.Location.X, n.Location.Y + y);
    c.Height = c.Height + y;             
} 
       
private void bottomLeft(Nodes n, int x, int y)
{
            
   Control c = (Control)n.Tag;  
   n.Location = new Point(n.Location.X + x, n.Location.Y + y);
                     
  if(c.ClientRectangle.Width > 20 && c.ClientRectangle.Height > 20)
  { 
      c.Left = c.Left + n.Left;
      c.Height = c.Height + y;                                 
      c.Width = c.Width - n.Left;                
            
  }
  else
  { 
     if( n.Left + c.Left > 20  ) ----> when button size reaches 20 and wants to ruther decrease it size then button moves horinontally      {
        c.Left = c.Left + n.Left;
        c.Height = c.Height + y;                   
        c.Width = c.Width -n.Left;
     }
  }

}