How to get the tapped node full path in .NET MAUI TreeView (SfTreeView)?

To retrieve the full path of a TreeViewNode in a .NET MAUI TreeView when a node is tapped, you can utilize the TapCommand property. This allows you to execute a command that can access and process the node’s information upon user interaction.

XAML

<syncfusion:SfTreeView x:Name="treeView"
                       TapCommand="{Binding TappedCommand}"
                       ChildPropertyName="SubFiles"
                       ItemsSource="{Binding ImageNodeInfo}">
    <syncfusion:SfTreeView.ItemTemplate>
        <DataTemplate>
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto"/>
                </Grid.RowDefinitions>
                <Grid x:Name="grid" RowSpacing="0" >
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="1" />
                    </Grid.RowDefinitions>
                    <Grid RowSpacing="0" Grid.Row="0" >
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="40" />
                            <ColumnDefinition Width="*" />
                        </Grid.ColumnDefinitions>
                        <Grid Padding="5">
                            <Image Source="{Binding ImageIcon}"
                                    VerticalOptions="Center"
                                    HorizontalOptions="Center"
                                    HeightRequest="35" 
                                    WidthRequest="35"/>
                        </Grid>
                        <Grid Grid.Column="1"              
                               RowSpacing="1"
                               Padding="1,0,0,0"
                               VerticalOptions="Center">
                            <Label LineBreakMode="NoWrap"
                            Text="{Binding ItemName}"
                            VerticalTextAlignment="Center">
                            </Label>
                        </Grid>
                    </Grid>
                    <StackLayout Grid.Row="1"/>
                </Grid>
            </Grid>
        </DataTemplate>
    </syncfusion:SfTreeView.ItemTemplate>
</syncfusion:SfTreeView>

ViewModel

private Command<object>? tappedCommand;

public Command<object>? TappedCommand
{
    get { return tappedCommand; }
    set { tappedCommand = value; }
}

public FileManagerViewModel()
{
    TappedCommand = new Command<object>(ExecuteTapCommand);
}

// If a user taps on a node in the TreeView, this method gets triggered,
// retrieves the full path of the node, and displays it in an alert.
private void ExecuteTapCommand(object obj)
{
    var tappedNode = obj as Syncfusion.TreeView.Engine.TreeViewNode;
    string nodepath = GetNodePath(tappedNode);
    
    // Show the full path of the tapped node in display alert.
    App.Current!.MainPage!.DisplayAlert("Path ", nodepath, "Ok");
}

// Method to retrieve the full hierarchical path of the tapped node.
private string GetNodePath(TreeViewNode? node)
{
    string fullpath = "";
    string path = "";

    while (node != null)
    {
        // extracts the node's name.
        path = @"\" + (node.Content as FileManager)!.ItemName;

        // If the node has a parent, node is set to its parent(node.ParentNode).
        // If there is no parent, node is set to null, terminating the loop.
        if (node.ParentNode != null)
        {
            node = node.ParentNode;
        }
        else
        {
            node = null;
        }
        fullpath = path + fullpath;
    }
    return fullpath;
}

View sample in GitHub

Conclusion
I hope you enjoyed learning about how to get the tapped node full path in .NET MAUI TreeView.

You can refer to our .NET MAUI TreeView Feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications.

You can also explore our .NET MAUI TreeView example to understand how to create and manipulate data.

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