Please refer to our Making RadSplitter occupy part of a page with variable size
online article for information about the HeightOffset property.
Regarding setting the HeightOffset property of a nested RadSplitter, you have to set the following properties to that splitter:
- HeightOffset=200 (for example)
You have to set ResizeWithParentPane=false, because the default value of this property is "true". This means that the nested RadSplitter becomes as high and as wide as its parent RadPane and resizes with it. That is why, by default, the nested RadSplitter does not respect the HeightOffset property.
All the best,
the Telerik team
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