How to get index of parent node and child node in treeview?

Hi Mukesh,

Your code works perfactlly. Thanks a ton :)

Approch :-

XAML File

Code Behind:-

private void OnItemSelected(object sender, RoutedEventArgs e)

{

TreeViewItem SelectedNode = e.OriginalSource as TreeViewItem;

int ParentIndex = -1;

int ChildIndex = -1;

TreeViewItem ChildNode = ItemsControl.ItemsControlFromItemContainer(SelectedNode) as TreeViewItem;

TreeView ParentNode = ItemsControl.ItemsControlFromItemContainer(SelectedNode) as TreeView;

//get index

if (ChildNode == null)

{

ParentIndex = ParentNode.ItemContainerGenerator.IndexFromContainer(SelectedNode);

}

else

{

ChildIndex = ChildNode.ItemContainerGenerator.IndexFromContainer(SelectedNode);

ParentNode = ItemsControl.ItemsControlFromItemContainer(ChildNode) as TreeView;

ParentIndex = ParentNode.ItemContainerGenerator.IndexFromContainer(ChildNode);

dgData.ItemsSource = clsMCB.dsXml.ElementAt(0).Tables[ChildIndex].DefaultView;

}

Hi,

You can get the index of parent and child node like this..

http://www.codeproject.com/Articles/20645/WPF-TreeView-Selection

private void OnItemSelected(System.Object sender, System.Windows.RoutedEventArgs e)

{

TreeViewItem SelectedNode = e.OriginalSource as TreeViewItem;

int ParentIndex = -1;

int ChildIndex = -1;

TreeViewItem ChildNode = ItemsControl.ItemsControlFromItemContainer(SelectedNode) as TreeViewItem;

TreeView ParentNode = ItemsControl.ItemsControlFromItemContainer(SelectedNode) as TreeView;

//get index

if (ChildNode == null) {

ParentIndex = ParentNode.ItemContainerGenerator.IndexFromContainer(SelectedNode);

} else {

ChildIndex = ChildNode.ItemContainerGenerator.IndexFromContainer(SelectedNode);

// Resets parent node to check child node

ParentNode = ItemsControl.ItemsControlFromItemContainer(ChildNode) as TreeView;

ParentIndex = ParentNode.ItemContainerGenerator.IndexFromContainer(ChildNode);

}

Hope this will help you.

thanks

4 Replies

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Avnish Kumar11y ago
Hi Mukesh,

Your code works perfactlly. Thanks a ton :)

Approch :-
XAML File

Code Behind:-
private void OnItemSelected(object sender, RoutedEventArgs e)
{
TreeViewItem SelectedNode = e.OriginalSource as TreeViewItem;
int ParentIndex = -1;
int ChildIndex = -1;
TreeViewItem ChildNode = ItemsControl.ItemsControlFromItemContainer(SelectedNode) as TreeViewItem;
TreeView ParentNode = ItemsControl.ItemsControlFromItemContainer(SelectedNode) as TreeView;
//get index
if (ChildNode == null)
{
ParentIndex = ParentNode.ItemContainerGenerator.IndexFromContainer(SelectedNode);
}
else
{
ChildIndex = ChildNode.ItemContainerGenerator.IndexFromContainer(SelectedNode);
ParentNode = ItemsControl.ItemsControlFromItemContainer(ChildNode) as TreeView;
ParentIndex = ParentNode.ItemContainerGenerator.IndexFromContainer(ChildNode);
dgData.ItemsSource = clsMCB.dsXml.ElementAt(0).Tables[ChildIndex].DefaultView;
}
}
Avnish Kumar11y ago
Adding Corresponding Method

private void treeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs