Hi James,
This behavior is expected since the grid only has access to the items that are displayed in the current page.
Here is one workaround that might work for your scenario:
01.BitArray selectedItemsFlags;
02.bool selectionRestored = false;
03.// subscribe for this.myGrid.Items.PageChanging | this.myGrid.Items.PageChanged
04.
05.void Items_PageChanged(object sender, System.EventArgs e)
06.{
07. this.myGrid.SelectedItems.Clear();
08. this.Dispatcher.BeginInvoke(new System.Action(() => this.RestoreSelectionAfterPageChange()));
09.}
10.
11.void Items_PageChanging(object sender, System.ComponentModel.PageChangingEventArgs e)
12.{
13. // save current selection
14. this.selectedItemsFlags = new BitArray(this.myGrid.Items.PageSize);
15.
16. foreach (var item in this.myGrid.SelectedItems)
17. {
18. var index = this.myGrid.Items.IndexOf(item);
19. this.selectedItemsFlags[index] = true;
20. }
21.
22. this.selectionRestored = false;
23.}
24.
25.private void RestoreSelectionAfterPageChange()
26.{
27. if (this.selectedItemsFlags == null || this.selectionRestored)
28. return;
29.
30. // restore selection
31. for (int i = 0; i < this.selectedItemsFlags.Count; i++)
32. {
33. var isSelected = this.selectedItemsFlags[i];
34.
35. if (isSelected && i < this.myGrid.Items.Count)
36. this.myGrid.SelectedItems.Add(this.myGrid.Items[i]);
37. }
38.
39. this.selectionRestored = true;
40.}
Greetings,
Milan
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Explore the
Telerik Public Issue Tracking
system and vote to affect the priority of the items.