C#

<br />
Class BlockClass<br />
{<br />
  private enum BlockColor<br />
  {<br />
    BLUE,<br />
    GREEN,<br />
    RED<br />
  }<br />
  <br />
  // some more members here<br />
<br />
  private BlockColor ItsColor;<br />
<br />
  public void AssignColor()<br />
  {<br />
    Random rnd = new Random();<br />
    switch (rnd.Next(4))<br />
    {<br />
      case 1 :<br />
        this.ItsColor = BlockColor.BLUE;<br />
        break;<br />
      case 2 :<br />
        this.ItsColor = BlockColor.GREEN;<br />
        break;<br />
      case 1 :<br />
        this.ItsColor = BlockColor.RED;<br />
        break;<br />
  }<br />
<br />
  public BlockClass(Graphics InGraphics, <br />
                         int inSpeed,<br />
                       Point inLocation,<br />
                        bool inTopRow)<br />
  {<br />
    // some other constructor code<br />
    this.AssignColor();<br />
    // some other constructor code<br />
  }<br />
}<br />

<br />
class BlocksClass<br />
{<br />
  ArrayList TheBlocks = new ArrayList(20);<br />
<br />
  public void LayoutBlocks()<br />
  {<br />
    for(int x = 0;x < 20;x++)<br />
    {<br />
      ArrayList YArray = new ArrayList(20);<br />
      for(int y = 0;y < 20;y++)<br />
      {<br />
        BlockClass Block = new BlockClass(this.Gfx,<br />
                                          this.speed,<br />
                                          new Point((x * 7) + 3,(y * 7) + 3)),<br />
                                          (y == 0))<br />
        YArray.Add(Block);<br />
      }<br />
      this.TheBlocks.Add(YArray)<br />
    }<br />
  }   <br />
}<br />

class BlockClass {
  static Random r = new Random();
 
  // ....
 
  public void AssignColor()
  {
    switch(BlockClass.r.Next(4))
    {
      // ....
    }
  }
 
  // ....
}

private void trvHierarchy_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
{
   if (((string)e.Node.Tag).IndexOf("Folder:") >= 0)
   {
      if (pnlHoursList.Visible = true)
      {
         CreateSummary();
         pnlHoursList.Visible = false;
         pnlUsageSummary.Visible = true;
      }
      else
      {
         pnlHoursList.Visible = true;
         pnlUsageSummary.Visible = false;
      }
   }
}

if ((((string)e.Node.Tag).IndexOf("Folder:") >= 0) && (pnlHoursList.Visible == true))
{      
    CreateSummary();
    pnlHoursList.Visible = false;
    pnlUsageSummary.Visible = true;
}
else
{
    pnlHoursList.Visible = true;
    pnlUsageSummary.Visible = false;
}