Thank you for writing.
The recommended way to check or uncheck nodes in RadTreeView is to use the SetCheckBoxCommand.
The arguments above have the following meanings:
tv.Nodes indicates the node in the tv RadTreeView from which the command will start.
-1 means that the whole hierarchy below Nodes 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.
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