AfterLabelEdit and EndEdit

[Marek]

We want to extend the functionality of RadTreeView and have therefore done something like this: 

public class DerivedTree : RadTreeView
{
  public DerivedTree()
  {
    this.AllowEdit = true;
    this.AfterLabelEdit += new AfterLabelEditHandler  (DerivedTree_AfterLabelEdit);
  }
}

We then have two problems.  The first is that we get an obsolete warning about using AfterLabelEdit and using EndEdit instead.

The problem is that EndEdit is just a method and not virtual and as far as I could see and there is no equivalent OnEndEdit event.  How should we use this functionality correctly?

The second problem is that when we use this control all the [hot] feedback and node selection indication does not appear any more.  What is the problem and how can we correct it.

Best regards

Marek

[Jordan]

Hi Marek,

We are sorry that the obsolete events cause such confusion. However we believe this is for good as we are
implementing a framework for editor support in RadTreeView. We will be happy if you work with us towards a stable and extensible RadTreeView.

Regarding your issues with deriving form RadTreeView - they all have an easy solution as demonstrated below:

public class DerivedTreeView : RadTreeView
    {
        public DerivedTreeView() : base()
        {
            this.AllowEdit = true;
            this.Edited += new EventHandler(DerivedTreeView_Edited);
            this.ValueValidating += new CancelEventHandler(DerivedTreeView_ValueValidating);
        }

        protected override void CreateChildItems(Telerik.WinControls.RadElement parent)
        {
            base.CreateChildItems(parent);

            //set the theme to use
            this.ThemeName = "ControlDefault";
        }

        //return the RadTreeView type name to enable original themes
        public override string ThemeClassName
        {
            get
            {
                return typeof(RadTreeView).FullName;
            }
        }

        void DerivedTreeView_ValueValidating(object sender, CancelEventArgs e)
        {
            System.Diagnostics.Debug.WriteLine("DerivedTreeView_ValueValidating");
            if ((this.ActiveEditor.Value as string).Length > 7)
            {
                e.Cancel = true;
            }
        }

        void DerivedTreeView_Edited(object sender, EventArgs e)
        {
            System.Diagnostics.Debug.WriteLine("DerivedTreeView_Edited");
            System.Diagnostics.Debug.WriteLine("New value: " + this.SelectedNode.Text);
        }
    }

Thank you for your cooperation.

 
All the best,
Jordan
the Telerik team

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