Clear GroupColumns Slow

[Gerardo]

Hello, i have a RadGridView with 50 columns and 12 groups. That sentences take 6 seconds.
  grid.Columns.Clear();
  grid.ColumnGroups.Clear();
How can i clear groups and columns faster?

[Pavel Pavlov]

Hello Gerardo,

We have recently introduced some major optimizations regarding rendering of column groups.  I suggest to wait for the service pack ( will be available in a few days) and give it a try.

In case you still experience such problems after upgrading to the service pack, please let me know so we can check further what went wrong.

All the best,
Pavel Pavlov
the Telerik team