syncfusion-blazor-sidebar

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Guide to implementing Syncfusion Blazor Sidebar component for responsive navigation sidebars. Use this when building Blazor WebAssembly and .NET 8 Web Apps that need sidebars. Covers setup, open/close control, docking, state persistence, multiple sidebars, and complete styling. Includes ListView and TreeView integration.

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Sourcesyncfusion/blazor-ui-components-skills

Added on2026-05-08

NPX Install

npx skill4agent add syncfusion/blazor-ui-components-skills syncfusion-blazor-sidebar

SKILL.md Content

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Implementing Syncfusion Blazor Sidebar Component

The Syncfusion Blazor Sidebar is a responsive navigation component that reserves screen space for navigation content. It supports multiple positioning modes, docking, state persistence, and integrates seamlessly with other Syncfusion components.

When to Use This Skill

Use this skill when you need to:

Add a collapsible navigation sidebar to your Blazor application
Control sidebar open/close state programmatically
Enable responsive behavior based on screen resolution
Show icons-only navigation (dock mode)
Persist sidebar state across page navigation
Display multiple sidebars with different positioning
Target specific HTML elements for sidebar context
Integrate ListView or TreeView components in sidebar
Apply custom CSS styling to sidebar appearance
Build responsive layouts in Blazor WebAssembly or .NET 8 apps

Key Component Properties

Property	Purpose
`IsOpen`	Gets or sets a boolean value which indicates whether the Sidebar component's state is open or close. When the Sidebar type is set to `Auto` , the component will be expanded in desktop and collapsed in mobile mode regardless of the `IsOpen` property.
`Width`	Sets sidebar width in pixels or percentage
`Type`	Sidebar behavior: `Push` , `Over` , `Slide` , `Auto`
`Position`	Sidebar position: `Left` (default) or `Right`
`EnableDock`	Shows icons-only when collapsed (default: `false` )
`DockSize`	Width of dock area in pixels
`MediaQuery`	CSS media query for responsive behavior
`Target`	Specific HTML element as sidebar context
`EnablePersistence`	Retains state in localStorage (default: `false` )
`ShowBackdrop`	Overlay behind sidebar to prevent content interaction
`Animate`	Enables animation transitions while expanding or collapsing (default: `true` )
`EnableRtl`	Displays sidebar in right-to-left direction for RTL languages (default: `false` )

Documentation and Navigation Guide

Getting Started

📄 Read: references/getting-started.md

Installation across Visual Studio, VS Code, and .NET CLI
NuGet package setup (Syncfusion.Blazor.Navigations, Syncfusion.Blazor.Themes)
Namespace imports and service registration
Theme stylesheet and script references
Basic component rendering

Web App Setup (.NET 8)

📄 Read: references/web-app-setup.md

Blazor Web App project creation
Interactive render modes (Auto, Server, WebAssembly)
Package installation for client projects
Stylesheet and script references in App.razor
Render mode directive usage

Open/Close Control

📄 Read: references/open-close-control.md

```
IsOpen
```
property and two-way binding with
```
@bind-IsOpen
```
Toggle methods for programmatic control
Button-based sidebar toggling
Combining multiple open/close triggers and standard event handling

Responsive & Docking Features

📄 Read: references/responsive-docking.md

```
MediaQuery
```
property for responsive behavior
```
EnableDock
```
property for icon-only navigation mode
```
DockSize
```
to control icon area width
Icon styling and font-face setup
Docking with ListItems and icon management

State Persistence & Target Context

📄 Read: references/state-persistence-targets.md

```
EnablePersistence
```
for localStorage support
ID requirement for persistence to work
```
Target
```
property for sidebar context
Applying sidebar to specific HTML elements
Toolbar and AppBar integration

Styling & Animation

📄 Read: references/styling-customization.md

Animation control using
```
Animate
```
property
RTL (right-to-left) support using
```
EnableRtl
```
property
CSS transitions and custom animation effects
State-based styling and visual customization
Backdrop customization and dock styling

Multiple Sidebars

📄 Read: references/multiple-sidebars.md

Managing multiple sidebar instances
```
Position
```
property (Left/Right)
```
e-main-content
```
class for multi-sidebar layouts
Left and right sidebar toggling
Coordinating multiple sidebar states

Content Integration

📄 Read: references/content-integration.md

Integrating ListView component in sidebar
ListViewFieldSettings configuration
TreeView integration for hierarchical menus
Toolbar component integration
MainLayout integration in .NET 8 apps

API Reference

📄 Read: references/api-reference.md

Complete API documentation for SfSidebar component
All 22 properties with descriptions and accepted values
Methods and their return types
Complete event system (Changed, Created, Destroyed, IsOpenChanged, OnClose, OnOpen)
Event arguments (ChangeEventArgs, EventArgs)
SfSidebarContainer documentation
9+ comprehensive usage examples with code
Property use cases with practical implementations

Quick Start Example

blazor

@using Syncfusion.Blazor.Navigations
@using Syncfusion.Blazor.Buttons

<SfSidebar @ref="sidebarObj" Width="250px" @bind-IsOpen="SidebarToggle">
    <ChildContent>
        <div style="text-align: center; padding: 3rem;">
            <p>Sidebar Content</p>
            <SfButton @onclick="Close" CssClass="e-btn">Close</SfButton>
        </div>
    </ChildContent>
</SfSidebar>

<div style="padding: 3rem;">
    <div>Main Content</div>
    <SfButton @onclick="Toggle" IsToggle="true">Toggle Sidebar</SfButton>
</div>

@code {
    SfSidebar sidebarObj;
    public bool SidebarToggle = false;

    public void Toggle() => SidebarToggle = !SidebarToggle;
    public void Close() => SidebarToggle = false;
}

Common Implementation Patterns

Pattern 1: Basic Toggle Sidebar

Use

IsOpen

property with button click to show/hide sidebar.

Pattern 2: Responsive Sidebar

Use

MediaQuery

to automatically hide sidebar on mobile and show on desktop.

Pattern 3: Docked Navigation

Use

EnableDock

with

DockSize

for icon-only navigation that expands on hover/click.

Pattern 4: Persistent State

Use

EnablePersistence

+ unique

ID

to remember sidebar state across page navigation.

Pattern 5: Target Property Behavior

Implicit (Default): No
```
Target
```
property → sidebar targets next sibling element automatically
Explicit (Advanced):
```
Target=".selector"
```
→ requires inner wrapper
<div>
for CSS transforms
✓ Use implicit for most cases | Use explicit only for scoped layout control
See State Persistence & Target Context for detailed patterns

Pattern 6: Sidebar with Menu

Combine with ListView or TreeView for structured navigation menus.

Pattern 7: Multiple Sidebars

Use

Position

property with left/right sidebars flanking main content.

Next Steps:

Choose your platform: WebAssembly or .NET 8 Web App
Follow the Getting Started guide for installation
Select features from the navigation guide above
Implement your sidebar with appropriate styling

For detailed examples and advanced scenarios, refer to individual reference files.