Hello P Siva,

I have been investigating into the behavior you are seeing in this case, and the reason you are seeing this issue is because the Shift+Click selection behavior comes from a “pivot item” element that we track, essentially by the last row you have clicked. When you reset the data source, this is reset as well, which is why when you try to Shift+Click Row 13 from Row 6, only Row 13 is selected.

Something you can do to prevent this is to utilize the UltraGrid.ActiveRowScrollRegion.SetPivotItem() method and pass the Row that you want to be the “pivot item” as a parameter when you reset the selection. For example, using your code example above:

var row = grid.Rows[_currentRowIndex];

row.Activate();
row.Selected = true;

RowScrollRegion region = this.grid.ActiveRowScrollRegion;
region.SetPivotItem(row);

Please let me know if you have any other questions or concerns on this matter.

Any update on the above query?

Yes , my expectation is to select from row6 to row13.

 Consider when i'm in row6, and click to reload data. like i mentioned in first post, after reloading the data i setting the focus to row6 by                                             

           grid.Rows[_currentRowIndex].Activate();

           grid.Rows[_currentRowIndex].Selected = true; 

 with the above lines, focus setting to row6. now when i'm selcting shift + mouse click to row13.

im expectng to select, row6 to row13 . but its not happening.

 don't consider tick field, here i'm talking about multiple row selection.