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rnemchev
Joined: 26 Apr 2010
Posts: 12
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 Posted: Fri Apr 30, 2010 3:22 pm Post subject: Custom selection |
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Hi,
I like multiple selection very much but in my case with about 1000000 items in the tree I get OutOfMemoryException (because the internal list with selected items becomes huge) when click on the first item, scroll to the last and click with Shift key pressed. Is there a way to customize the selection mechanism? I have an idea to keep selection as ranges where it is possible instead of separate items.
Thank you in advance!
Rado |
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Infralution
Joined: 28 Feb 2005
Posts: 5027
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| Posted: Fri Apr 30, 2010 11:43 pm Post subject: |
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You can handle the SelectionChanging event and calculate the size of the selection from:
| Code: | | int selectionSize = Math.Abs(e.StartRow.RowIndex - e.EndRow.RowIndex); |
Then if the selection is too large you can set e.Cancel (or give the user an opportunity to decide if they want to proceed with the selection).
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Infralution Support |
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rnemchev
Joined: 26 Apr 2010
Posts: 12
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| Posted: Sat May 01, 2010 9:56 am Post subject: |
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| Thank you! This is a good advice. |
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