Thank you for writing.
methods are intended to optimize the performance of RadGridView
. It is recommended when you perform an operation like adding multiple rows or changing multiple cell values to put this logic between calls to the BeginUpdate
methods. In the above described scenario the grid layout would be refreshed only once, right after calling EndUpdate
method on the other hand basically invalidates the control layout and forces it to redraw itself.
I can recommend the following articles as they provide additional information on formatting the cells and the column grouping: Cell Formatting
May I ask you to send us a sample project correctly depicting your scenario. This way we could check how you are performing the formatting and confirm the approach or suggest a different one.
I hope this information is useful. Should you have further questions please do not hesitate to write back.