I already answered your support thread and for your convenience and for others who might have similar questions I pasted my reply below:
First of all, let me explain how the dock functionality of the RadSlidingPane works. The RadSlidingPane is a child of a RadSlidingZone, which in turn is a child of a RadPane. When the RadSlidingPane slides out, it should show over any content of an adjacent RadPane. Because of this, it does not act as a child of its parent RadPane. However, when you try to dock a RadSlidingPane, you force it into its parent RadPane. At this point, in order for the RadSlidingPane to show all its content (without its parent RadPane to show scrollbars because of its Height=22px), the RadSlidingPane tries to resize its parent RadPane and in case it fails, it collapses. However, in order to be able to resize a RadPane, you have to define at least two RadPanes in the RadSplitter. That way, when you resize the top pane to a larger height, the bottom pane will resize to a smaller height, leading to the RadSplitter keeping its correct Height.
Having said that, in order to use the dock functionality of the RadSplidingPane, you have to define at least two RadPanes in your RadSplitter. What I suggest is to remove the whole table and use splitters instead.
Note, also that the FullScreenMode property is obsolete and in order to get the same result you should use the approach explained here:
Also, you can have SlideDirection Top/Bottom only if your splitter is with horizontal orientation - in your case it is vertical which is the default setting and thus you can have only Right/Left direction. However, you can nest a horizontal splitter in a vertical one to get the desired result.
As to your other questions:
- I am not completley sure what is the problem with pushing content down but I believe that it will be solved when you replace teh tables with splitters
- I could not understand how exactly you expect the LiveResize property to work - it gives you a real time preview of the content during the resizing of the panes as you can see in the demo below:
This means that the panes are resized while the splitbar is being dragged - if the property is false, they will resize after you release the splitbar.
I recommend to examine our online demos below and I believe that you will find some useful configuration tips there:
I hope that my explanations and suggestions are detailed and helpful enough, let me know how it goes.
All the best,
the Telerik team