I updated the version to 2010 Q1
After update, there comes a weird phenomenon
I modified a value in a cell in radgridview (see attachment edit.jpg)
For example, I modified a value in down in the 2nd play. The 2nd play is currently being highlighted. Then I go to the 3rd play and modify a value in the 3rd play'cell. Both 2nd and 3rd play will be selected. After a value in the 3rd play is changed, it will come out a new 3rd play record. (see error.jpg. There are two 3rd plays)