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TriStateMode and checkboxes

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Matt
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Matt asked on 31 Mar 2010, 09:36 PM
Q1 2009 SP1 Winform RadTreeView

Why is it that 'node.Checked' doesn't seem to get evaluated when TriStateMode is False?

If TriStateMode is True 'node.Checked' gets evaluated as expected.

I'm trying to uncheck all checkboxes in my RadTreeView without using TriStateMode. Is there another approach I should be using (without using TriStateMode)?

Thanks,
Matt

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Matt
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answered on 02 Apr 2010, 04:04 PM
Never mind. My code was at fault.
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Victor
Telerik team
answered on 06 Apr 2010, 04:38 PM
Hello Matt,

Thank you for writing.
The recommended way to check or uncheck nodes in RadTreeView is to use the SetCheckBoxCommand.
For example:

RadTreeView.ExecuteBatchCommand(tv.Nodes[0], -1, new SetCheckBoxCommand(), true);
The arguments above have the following meanings:
tv.Nodes[0] indicates the node in the tv RadTreeView from which the command will start.

-1 means that the whole hierarchy below Nodes[0] will be affected.

new SetCheckBoxCommand() is obvious. Passing instances of different commands causes different changes in the nodes hierarchy (in this case checking or unchecking nodes).

true means to check the nodes. Passing false on the other hand will uncheck them.

Please refer to our online documentation for more information on how to use the commands, what commands are provided out of the box and how to create custom commands.

Please write again if you have other questions.

Best wishes,
Victor
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Stefan
Telerik team
answered on 22 Mar 2011, 03:14 PM
Hi Matt,

Please note that in Q1 2011 we have introduced a major upgrade of RadTreeView control, which is now virtualized and fully customizable. Feel free to download the latest release and try it out. For more information on our latest release refer to this blog post

Kind regards,
Stefan
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Victor
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