The WPF framework provides a built-in splitter - GridSplitter
which you can use. Currently there is no control providing this functionality in our toolset.
All the best,
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items