Hi,
I encounter the problem like in subject. You can simply reproduce it by:
1) create simple project with RadGridView
2) Set model as ObjectDataSource
3) fill it like this:
When you uncoment version one ( and of course comment version 2 ) everything works fine = selecting rows / cells works perfect.
But when you comment version 1 and uncoment second ( like in above example ) after set sorting on third column ( Text2 ) selecting rows / cells slows down. When you clear sorting on third column behavior back to normal. Sorting by another columns ( first or second ) doesn't couse such behavior.
So in my opinion it is happend when many cells in sorted columns contain the same value.
I think that because when fill only half of rows with the same value and rest with different it spead up.
Does someone has any solution for this
Thanks in advance