What I need to happen:

1)I need a datatree whos checkboxes are mutually exclusive. 

2)When I check a checkbox I need to manipulate other UI items based on the selection

3)I need to go back to the view model and update some properties based on the selection

This is what I have:

<ig:XamDataTree x:Name="LogsTree"
ItemsSource="{Binding LogItems}"
NodeCheckedChanged="LogsTree_OnNodeCheckedChanged">
<ig:XamDataTree.CheckBoxSettings>
<ig:CheckBoxSettings CheckBoxVisibility="Visible"/>
</ig:XamDataTree.CheckBoxSettings>
<ig:XamDataTree.SelectionSettings>
<ig:TreeSelectionSettings NodeSelection="Single"/>
</ig:XamDataTree.SelectionSettings>
<ig:XamDataTree.GlobalNodeLayouts>
<ig:NodeLayout Key="Logs" DisplayMemberPath="Text" CheckBoxMemberPath="IsChecked"/>
</ig:XamDataTree.GlobalNodeLayouts>

<i:Interaction.Triggers>

<i:EventTrigger EventName="NodeCheckedChanged" >
<command:EventToCommand Command="{Binding LogSelectionCommand}" PassEventArgsToCommand="True" />
</i:EventTrigger>
</i:Interaction.Triggers>

</ig:XamDataTree>

private void LogsTree_OnNodeCheckedChanged(object sender, NodeEventArgs e)
{
LogsTree.NodeCheckedChanged -= LogsTree_OnNodeCheckedChanged;

var index = e.Node.Index;
foreach (var node in LogsTree.Nodes)
node.IsChecked = false;
LogsTree.Nodes[index].IsChecked = true;

LogsTree.NodeCheckedChanged += LogsTree_OnNodeCheckedChanged;
}

private void LogSelectionChanged(object e)

{

//this is the method that executes in my view model when someone check something the LogTree

}

What happens is that even though I unregistered the NodeCheckedChanged event for LogTree, method LogSelectionChanged command still excutes in my view model because of this code:

foreach (var node in LogsTree.Nodes)
node.IsChecked = false;

I only want it to execute once. Is this possible?