BeginUpdate() and endUpdate() vs. refresh()

[Niloofar]

hello,
I have a grid which i wanted to group by columns (there were cell formatting on cell elements)but after removing the grouping condition , there was a problem with the index of cell elements and formatting of cell elements got messed up.

I used me.beginupdate() and me.endupdate() in a sub handling me.groupbychnaged.  grid seems to be working fine. I tried me.refresh() and it is not working.

I am wondering what is the difference between these two methods. I thought they both do updating/refreshing grid

cheers,

[Hristo]

Hi Niloofar,

Thank you for writing.

The BeginUpdate and EndUpdate 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 and EndUpdate methods. In the above described scenario the grid layout would be refreshed only once, right after calling EndUpdate method.

The Refresh 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, Grouping

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.

Regards,
Hristo Merdjanov
Telerik

 

 

[Niloofar]

Thank you for your reply.

Cheers,

Niloofar

[Hristo]

Hi Niloofar,

I am glad that you find the information useful. 

Should you have further questions please do not hesitate to write back.

Regards,
Hristo Merdjanov
Telerik