csharp: Count number of modules in pane.

CountPaneModules

private int CountPaneModules (string paneName)
{
  int count = 0;
  foreach (System.Web.UI.Control control in this.Controls)
  {
    System.Web.UI.HtmlControls.HtmlContainerControl htmlContainerControl = control as System.Web.UI.HtmlControls.HtmlContainerControl;
    string a;
    if (htmlContainerControl != null && !string.IsNullOrEmpty(htmlContainerControl.ID) && (a = htmlContainerControl.TagName.ToLowerInvariant()) != null && (a == "td" || a == "div" || a == "span" || a == "p"))
    {
      if (htmlContainerControl.ID.ToLower() == paneName.ToLower())
      {
        count = htmlContainerControl.Controls.Count;                    
      }               
    }
  }
  return count;
}