Hide a node driven

[Cristina]

Hi I have a Drag and Drop which can range from a RadGridView to a RadTreeView. I wish I could do the drag and drop but that the dragged item is not displayed in the RadTreeView, is hidden. This is the code I'm using:
c#
public Page()

 

{

InitializeComponent();

this.GridView_ContentPlans.ItemsSource = DataGridView.GetContentPlans();

 

this.GridView_ContentPlans.DataLoaded += new EventHandler<EventArgs>(GridView_ContentPlans_DataLoaded);

 

LoadTreeFolders();

RadDragAndDropManager  .AddDragQueryHandler(GridView_ContentPlans, OnDragQuery);

 

RadDragAndDropManager.AddDragInfoHandler(GridView_ContentPlans, OnDragInfo);

 

TreeView_ContentPlans.AddHandler(

 

RadDragAndDropManager.DropInfoEvent, new EventHandler<DragDropEventArgs>(OnDropInfo));
}

 

private

void OnDragQuery(object sender, DragDropQueryEventArgs e)

 

{

 

 

if (e.Options.Status == DragStatus.DragQuery)

 

{

e.QueryResult =

 

true;

 

 

 

var dataGrid = sender as RadGridView;

 

 

 

var items = GridView_ContentPlans.SelectedItems.Cast<ContentPlans>().ToList();

 

e.Options.Payload = items;

 

 

 

 

 

 

 

var dragCue = new TreeViewDragCue();

 

dragCue.ItemsSource = items;

dragCue.ItemTemplate =

 

this.Resources[""] as DataTemplate;

 

e.Options.DragCue = dragCue;

 

 

 

 

 

 

}

 

 

if (e.Options.Status == DragStatus.DropSourceQuery)

 

{

e.QueryResult =

 

true;

 

e.Handled =

 

true;

 

}

}

 

private

 

 

void OnDragInfo(object sender, DragDropEventArgs e)

 

{

 

 

RadGridView gridView = sender as RadGridView;

 

 

 

IEnumerable draggedItems = e.Options.Payload as IEnumerable;

 

 

 

if (e.Options.Status == DragStatus.DragInProgress)

 

{

 

 

TreeViewDragCue cue = new TreeViewDragCue();

 

cue.ItemTemplate =

 

this.Resources[""] as DataTemplate;

 

cue.ItemsSource = draggedItems;

e.Options.DragCue = cue;

}

 

 

else if (e.Options.Status == DragStatus.DragComplete)

 

{

 

 

IList source = gridView.ItemsSource as IList;

 

 

 

foreach (object draggedItem in draggedItems)

 

{

source.Remove(draggedItem);

 

}

}

}

 

private

 

 

void LoadTreeFolders()

 

{

 

 

TreeViewFolder parentFolder1 = new TreeViewFolder();

 

parentFolder1.Id =

 

"1";

 

parentFolder1.Name =

 

"Content Plan Group 1";

 

parentFolder1.CanCotnainEmployees =

 

true;

 

 

 

TreeViewFolder child1 = new TreeViewFolder();

 

child1.Id =

 

"11";

 

child1.Name =

 

"Sub Group 1.1";

 

parentFolder1.Children.Add(child1);

child1.CanCotnainEmployees =

 

true;

 

 

 

TreeViewFolder child11 = new TreeViewFolder();

 

child11.Id =

 

"111";

 

child11.Name =

 

"Sub Sub Group 1.1.1";

 

child1.Children.Add(child11);

child11.CanCotnainEmployees =

 

true;

 

 

 

TreeViewFolder parentFolder2 = new TreeViewFolder();

 

parentFolder2.Id =

 

"2";

 

parentFolder2.Name =

 

"Content Plan Group 2";

 

parentFolder2.CanCotnainEmployees =

 

true;

 

 

 

TreeViewFolder child2 = new TreeViewFolder();

 

child2.Id =

 

"21";

 

child2.Name =

 

"Sub Group 2.1";

 

parentFolder2.Children.Add(child2);

child2.CanCotnainEmployees =

 

true;

 

 

 

TreeViewFolder parentFolder3 = new TreeViewFolder();

 

parentFolder3.Id =

 

"3";

 

parentFolder3.Name =

 

"Content Plan Group 3";

 

parentFolder3.CanCotnainEmployees =

 

true;

 

folders.Add(parentFolder1);

folders.Add(parentFolder2);

folders.Add(parentFolder3);

 

 

this.TreeView_ContentPlans.ItemsSource = folders;

 

}

public

 

 

class ContentPlans

 

{

 

 

public string Name { get; set; }

 

 

 

public string Size { get; set; }

 

 

 

public int Panels { get; set; }

 

 

 

public string Description { get; set; }

 

 

 

private string _id;

 

 

 

public string id

 

{

 

 

get { return _id; }

 

 

 

set { _id = value; }

 

}

}

XAML

<

 

 

telerik1:RadTreeView Margin="0,0,0,0"

 

 

 

x:Name="TreeView_ContentPlans"

 

 

 

Width="300"

 

 

 

SelectionMode="Single"

 

 

 

VerticalAlignment="Top"

 

 

 

Grid.Column="0"

 

 

 

Foreground="#FFFFFF"

 

 

 

Background="Black"

 

 

 

FontSize="13.333"

 

 

 

FontFamily="Arial"

 

 

 

IsExpandOnDblClickEnabled="True"

 

 

 

IsDragTooltipEnabled="False"

 

 

 

IsDragDropEnabled="True"

 

 

 

telerik1:RadDragAndDropManager.AllowDrag="True"

 

 

 

telerik1:TextSearch.TextPath="Id"

 

 

 

telerik1:RadDragAndDropManager.AllowDrop="True"

 

 

 

ItemContainerStyle="{StaticResource RadTreeViewItemStyle1}"

 

 

 

PreviewDragEnded="TreeView_MediaFiles_PreviewDragEnded"

 

 

 

Selected="RadTreeViewItem_Selected"

 

 

 

>

 

 

 

 

 

<telerik1:RadTreeView.ItemTemplate >

 

 

 

 

<telerik1:HierarchicalDataTemplate ItemsSource="{Binding Children}" >

 

 

 

 

<TextBlock Text="{Binding Name}" />

 

 

 

 

</telerik1:HierarchicalDataTemplate>

 

 

 

 

</telerik1:RadTreeView.ItemTemplate>

 

 

 

 

</telerik1:RadTreeView>

 

<

 

 

telerik1:RadGridView Margin="0,3,0,0"

 

 

 

Grid.Column="1"

 

 

 

VerticalAlignment="Top"

 

 

 

x:Name="GridView_ContentPlans"

 

 

 

AlternateRowBackground="#FF262626"

 

 

 

Background="#FF262626"

 

 

 

BorderBrush="{x:Null}"

 

 

 

ColumnBackground="#FF262626"

 

 

 

Foreground="White"

 

 

 

HorizontalGridLinesBrush="#FF8B8B8B"

 

 

 

VerticalGridLinesBrush="{x:Null}"

 

 

 

BorderThickness="0"

 

 

 

GridLinesVisibility="Horizontal"

 

 

 

ShowGroupPanel="False"

 

 

 

HorizontalAlignment="Left"

 

 

 

Width="800"

 

 

 

Height="194"

 

 

 

GroupPanelBackground="{x:Null}"

 

 

 

FontSize="13.333"

 

 

 

CanUserFreezeColumns="True"

 

 

 

telerik1:RadDragAndDropManager.AllowDrag="True"

 

 

 

>

 

Thanks

[Tina Stancheva]

Hello Cristina,

Can you please have a look at this forum thread and let us know if the solution provided there works for you? Thank you in advance.

All the best,
Tina Stancheva
the Telerik team