Get a control in the masterpage or page from the current page RSS

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  carterwjeff

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  Get a control in the masterpage or page from the current page

  Feb 02, 2008 09:30 AM|carterwjeff|LINK

  Just thought I would post this.  You use it like this if you were looking for a TreeView.

  GetControl g = new GetControl();

  Control tvSel = new Control();

  if (g.getControlByName(this, ref tvSel, "tvSel"))

  if(((TreeView)tvSel).SelectedNode!=null)

  lbl.Text = "Selected: " + ((TreeView)tvSel).SelectedNode.Text;

  else

  lbl.Text = "Control Found but Not Selected";

  else

  lbl.Text = "Control Not Found";

   

   

  And here is the class:

   

   

  public class GetControl

  {

  public GetControl()

  {

  }

  /// <summary>

  /// Finds Controls on asp.net page or the pages masterpage.

  /// </summary>

  /// <param name="p">Page to look in.</param>

  /// <param name="c">Will be filled with the control if found</param>

  /// <param name="controlIDName">the ID of the control to find</param>

  public bool getControlByName(Page p, ref Control c, string controlIDName)

  {

  bool found = false;

  for (int i = 0; i < p.Controls.Count; ++i)

  {

  if (p.Controls[i]!=null)

  {

  if (p.Controls[i].ID != null)

  {

  if (!(found = (p.Controls[i].ID == controlIDName)))

  {

  if ((found = lookRecursiveForControl(ref c, p.Controls[i], controlIDName)))

  break;

  }

  else

  {

  //Control found

  c = p.Controls[i];

  break;

  }

  }

  else

  {

  if ((found = lookRecursiveForControl(ref c, p.Controls[i], controlIDName)))

  break;

  }

  }

  }

  if (!found)

  {

  for (int i = 0; i < p.Master.Controls.Count; ++i)

  {

  if (p.Master.Controls[i] != null)

  {

  if (p.Master.Controls[i].ID != null)

  {

  if (!(found = (p.Master.Controls[i].ID == controlIDName)))

  {

  if ((found = lookRecursiveForControl(ref c, p.Master.Controls[i], controlIDName)))

  break;

  }

  else

  {

  //Control found

  c = p.Master.Controls[i];

  break;

  }

  }

  else

  {

  if ((found = lookRecursiveForControl(ref c, p.Master.Controls[i], controlIDName)))

  break;

  }

  }

  }

  }

  return found;

  }

  /// <summary>

  /// Looks for controls inside of a control recursively starting from the starting control to the very bottom of the tree.

  /// </summary>

  /// <param name="c">Control that would be returned if found</param>

  /// <param name="controlToLookIn">Control that should be looked in to find the control</param>

  /// <param name="controlIDName">the ID of the control your looking for.</param>

  /// <returns>control was found</returns>

  private bool lookRecursiveForControl(ref Control c, Control controlToLookIn, string controlIDName)

  {

  bool found = false;

  for (int i = 0; i < controlToLookIn.Controls.Count; ++i)

  {

  if (controlToLookIn.Controls[i] != null)

  {

  if (controlToLookIn.Controls[i].ID != null)

  {

  if (!(found = (controlToLookIn.Controls[i].ID == controlIDName)))

  {

  if ((found = lookRecursiveForControl(ref c, controlToLookIn.Controls[i], controlIDName)))

  break;

  }

  else

  {

  //Control found

  c = controlToLookIn.Controls[i];

  break;

  }

  }

  else

  {

  if ((found = lookRecursiveForControl(ref c, controlToLookIn.Controls[i], controlIDName)))

  break;

  }

  }

  }

  return found;

  }

  }