title: How to move multiple objects in a picture box using mouse down
body: <p>I'm currently working on an UML project. 
  Right now, I have to figure out, how to move a class with all it's attributes by clicking and dragging. 
  As of right now, the class is constructed with 2 rectangles and a draw string for the attributes and class name.</p>
  
  <p>I probably have to put all of this into a list and then assign a mousedown event, however, I do not know how.</p>
  
  <pre><code>  private void button1_Click(object sender, EventArgs e)
      {
          Properties fcm = new Properties();
          DialogResult dr = fcm.ShowDialog();
  
          foreach (var r in rects)
          {
              if (dr == DialogResult.OK)
              {
                  Graphics graph = pictureBox1.CreateGraphics();
                  graph.Clear(Color.WhiteSmoke);
  
                  Graphics g = pictureBox1.CreateGraphics();
                  string nazev = fcm.GetNazev();
  
                  gr = pictureBox1.CreateGraphics();
                  Vykreslování vykres = new Vykreslování();
                  vykres.třída(40, 40, 200, 170, gr, nazev);
  
                  gr = pictureBox1.CreateGraphics();
                  Vykreslování vykres1 = new Vykreslování();
                  vykres1.třída(40, 40, 200, 25, gr, nazev);
  
                  using (Font myFont = new Font("Arial", 14))
                  {
  
                      g.DrawString(nazev, myFont, Brushes.Black, new Point(Convert.ToInt32((vykres1.Width - vykres1._TextWidth) / 2 + vykres1.Xpos), Convert.ToInt32(vykres1.Ypos + 5)));
  </code></pre>
  
  <p>This is what I use for creating the class itself. As you can see, I've tried putting it into a list via foreach, but it does not seem to be working.</p>