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JohnSummit
Joined: 10 Apr 2008
Posts: 32
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 Posted: Tue Jul 14, 2009 7:50 am Post subject: How to programmaticallyretrieved the icon set to a tree node |
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I have a need to programmatically retrieve the icon previously set for a row via the 'virtualTree1_GetRowData' event handler. The only thing i have access to is the Row.Item reference (i.e. a referent to the tree node itself).
Is there not a way to get from the Item to the rowdata? |
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Infralution
Joined: 28 Feb 2005
Posts: 5027
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| Posted: Tue Jul 14, 2009 11:20 pm Post subject: |
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Virtual Tree only keeps the RowData for the Rows that are currently displayed. So probably the simplest thing to do is to call the binding yourself to get RowData eg
| Code: | RowBinding binding = _virtualTree.GetRowBinding(e.Row);
RowData rowData = new RowData(_virtualTree);
binding.GetRowData(e.Row, rowData) |
Virtual Tree does keep a cache of the RowData for the currently displayed rows (just those actually visible). The GetDataForRow method checks this before return the RowData - however this method is protected so you have to derive a new class and provide a public method to call this if you wanted to make use of it. Unless you are calling this method at a very high frequency the first suggested method would suffice.
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Infralution Support |
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JohnSummit
Joined: 10 Apr 2008
Posts: 32
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| Posted: Wed Jul 15, 2009 5:10 am Post subject: |
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| Thanks. I ended up caching the icon in my item object directly. |
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