Set full RadGrid height depending on row count
When scrolling is enabled, the scroll area of the grid has a fixed scroll height of 300px. This causes a blank space to appear if the item count is too low.
If you want the grid to have its height automatically adjusted to its records, you can set an empty value to the following property:
<Scrolling ScrollHeight="" />
Alternatively, if you want to set a percentage height to the grid, you can follow the steps provided here: