[Solved] Cannot find the definition for 'AddHandler'

[NickZ]

Hello,  I followed the example to implement 'AddRemoveDisable' to my treeview.  I got an compile error which said

'Telerik.Windows.Controls.RadTreeView' does not contain a definition for 'AddHandler' and no extension method 'AddHandler' accepting a first argument of type 'Telerik.Windows.Controls.RadTreeView' could be found (are you missing a using directive or an assembly reference?) ...

I just copied the codes from the example. The only difference is that I put this RadTreeview inside a RadPane which is dockable.  Is Pane causing the problem?  I compared references with what are in the example and nothing is missing.  Thanks for help.

[Vlad]

Hello NickZ,

Generally AddHandler is extension method and you need to add using Telerik.Windows.

All the best,
Vlad
the Telerik team

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[NickZ]

Thanks, Vlad.