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Data Grid
- Overview
-
Data Binding
-
Paging and Scrolling
-
Editing
-
Grouping
-
Filtering and Sorting
- Focused Row
-
Row Drag & Drop
-
Selection
-
Columns
- State Persistence
-
Appearance
-
Templates
-
Data Summaries
-
Master-Detail
-
Export to PDF
-
Export to Excel
-
Adaptability
- Keyboard Navigation
-
Pivot Grid
- Overview
-
Data Binding
-
Field Chooser
-
Features
-
Export to Excel
-
Tree List
- Overview
-
Data Binding
- Sorting
- Paging
-
Editing
- Node Drag & Drop
- Focused Row
-
Selection
-
Filtering
-
Column Customization
- State Persistence
- Adaptability
- Keyboard Navigation
-
Scheduler
- Overview
-
Data Binding
-
Views
-
Features
- Virtual Scrolling
-
Grouping
-
Customization
- Adaptability
-
Html Editor
-
Chat
-
Diagram
- Overview
-
Data Binding
-
Featured Shapes
-
Custom Shapes
-
Document Capabilities
-
User Interaction
- UI Customization
- Adaptability
-
Charts
- Overview
-
Data Binding
-
Area Charts
-
Bar Charts
- Bullet Charts
-
Doughnut Charts
-
Financial Charts
-
Line Charts
-
Pie Charts
-
Point Charts
-
Polar and Radar Charts
-
Range Charts
-
Sparkline Charts
-
Tree Map
-
Funnel and Pyramid Charts
- Sankey Chart
-
Combinations
-
More Features
-
Export
-
Selection
-
Tooltips
-
Zooming
-
-
Gantt
- Overview
-
Data
-
UI Customization
- Strip Lines
- Export to PDF
- Sorting
-
Filtering
-
Gauges
- Overview
-
Data Binding
-
Bar Gauge
-
Circular Gauge
-
Linear Gauge
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Navigation
- Overview
- Accordion
-
Menu
- Multi View
-
Drawer
-
Tab Panel
-
Tabs
-
Toolbar
- Pagination
-
Tree View
- Right-to-Left Support
-
Layout
-
Tile View
- Splitter
-
Gallery
- Scroll View
- Resizable
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-
Editors
- Overview
- Autocomplete
-
Calendar
- Check Box
- Color Box
- Date Box
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Date Range Box
-
Drop Down Box
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Number Box
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Select Box
- Switch
-
Tag Box
- Text Area
- Text Box
- Validation
- Custom Text Editor Buttons
- Right-to-Left Support
- Editor Appearance Variants
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Forms and Multi-Purpose
- Overview
- Button Group
- Field Set
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Filter Builder
-
Form
- Radio Group
-
Range Selector
- Numeric Scale (Lightweight)
- Numeric Scale
- Date-Time Scale (Lightweight)
- Date-Time Scale
- Logarithmic Scale
- Discrete scale
- Custom Formatting
- Use Range Selection for Calculation
- Use Range Selection for Filtering
- Image on Background
- Chart on Background
- Customized Chart on Background
- Chart on Background with Series Template
- Range Slider
- Slider
-
Sortable
-
File Management
-
File Manager
- Overview
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File System Types
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Customization
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File Uploader
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-
Actions and Lists
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Maps
- Overview
-
Map
-
Vector Map
-
Dialogs and Notifications
-
Localization
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Tree View - ContextMenu Integration
To display a DevExtreme ContextMenu when users right-click TreeView nodes, specify the nodes as the menu's target elements. To do this, set the menu's target property to a CSS selector. Since all TreeView nodes use the dx-treeview-item
class, you can use this class' selector, as shown in this demo.
You can control each command's enabled state depending on the node where users invoked the context menu. Implement the TreeView's onItemContextMenu function; in it, set the disabled property to true for required commands.
Was this demo helpful?
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
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Backend API
x
<div class="form">
@(Html.DevExtreme().TreeView()
.ID("treeview")
.DataSource(d => d.Mvc().LoadAction("GetHierarchicalData"))
.DisplayExpr("Text")
.ItemsExpr("Items")
.ExpandedExpr("Expanded")
.Width(300)
.Height(450)
.OnItemContextMenu("onTreeViewItemContextMenu"))
<div class="log-container">
<div><i class="icon dx-icon-clock"></i> Operations log:</div>
@(Html.DevExtreme().List()
.ID("log")
.Width(400)
.Height(300)
.ShowScrollbar(ShowScrollbarMode.Always))
</div>
@(Html.DevExtreme().ContextMenu()
.ID("contexmenu")
.Target("#treeview .dx-treeview-item")
.OnItemClick("onContextMenuItemClick")
.DataSource(new object[] {
new { id = "expand", text = "Expand category" },
new { id = "collapse", text = "Collapse category" },
new { id = "details", text = "Show product details" },
new { id = "copy", text = "Copy product info" }
})
)
</div>
<script>
var logItems = [];
var selectedTreeItem = undefined;
function onTreeViewItemContextMenu(e) {
selectedTreeItem = e.itemData;
var isProduct = e.itemData.Price > 0;
var contextMenu = $('#contexmenu').dxContextMenu('instance');
contextMenu.option('items[0].visible', !isProduct);
contextMenu.option('items[1].visible', !isProduct);
contextMenu.option('items[2].visible', isProduct);
contextMenu.option('items[3].visible', isProduct);
contextMenu.option('items[0].disabled', e.node.expanded);
contextMenu.option('items[1].disabled', !e.node.expanded);
}
function onContextMenuItemClick(e) {
var logEntry = '';
var treeView = $('#treeview').dxTreeView('instance');
switch(e.itemData.id) {
case 'expand': {
logEntry = 'The "' + selectedTreeItem.Text + '" group was expanded';
treeView.expandItem(selectedTreeItem);
break;
}
case 'collapse': {
logEntry = 'The "' + selectedTreeItem.Text + '" group was collapsed';
treeView.collapseItem(selectedTreeItem);
break;
}
case 'details': {
logEntry = 'Details about "' + selectedTreeItem.Text + '" were displayed';
break;
}
case 'copy': {
logEntry = 'Information about "' + selectedTreeItem.Text + '" was copied';
break;
}
}
logItems.push(logEntry);
$('#log').dxList('instance').option('items', logItems);
}
</script>
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