Class ContextMenuService

Class ContextMenuService. Contains various methods with options to open and close context menus. Should be added as scoped service in the application services and RadzenContextMenu should be added in application main layout. Implements the

Inheritance

System.Object

ContextMenuService

Namespace: Radzen

Assembly: Radzen.Blazor.dll

Syntax

public class ContextMenuService : IDisposable

Examples

@inject ContextMenuService ContextMenuService
<RadzenButton Text="Show context menu" ContextMenu=@(args => ShowContextMenuWithContent(args)) />
@code {
    void ShowContextMenuWithContent(MouseEventArgs args) => ContextMenuService.Open(args, ds =>
      @<RadzenMenu Click="OnMenuItemClick">
        <RadzenMenuItem Text="Item1" Value="1"></RadzenMenuItem>
        <RadzenMenuItem Text="Item2" Value="2"></RadzenMenuItem>
        <RadzenMenuItem Text="More items" Value="3">
            <RadzenMenuItem Text="More sub items" Value="4">
                <RadzenMenuItem Text="Item1" Value="5"></RadzenMenuItem>
                <RadzenMenuItem Text="Item2" Value="6"></RadzenMenuItem>
            </RadzenMenuItem>
        </RadzenMenuItem>
      </RadzenMenu>);

    void OnMenuItemClick(MenuItemEventArgs args)
    {
      Console.WriteLine($"Menu item with Value={args.Value} clicked");
    }
}

Constructors

ContextMenuService(NavigationManager)

Initializes a new instance of the ContextMenuService class.

Declaration

public ContextMenuService(NavigationManager uriHelper)

Parameters

Type	Name	Description
NavigationManager	uriHelper	The URI helper.

Methods

Close()

Closes this instance.

Declaration

public void Close()

Dispose()

Disposes this instance.

Declaration

public void Dispose()

Open(MouseEventArgs, IEnumerable<ContextMenuItem>, Action<MenuItemEventArgs>)

Opens the specified arguments.

Declaration

public void Open(MouseEventArgs args, IEnumerable<ContextMenuItem> items, Action<MenuItemEventArgs> click = null)

Parameters

Type	Name	Description
MouseEventArgs	args	The instance containing the event data.
IEnumerable<ContextMenuItem>	items	The items.
Action<MenuItemEventArgs>	click	The click.

Open(MouseEventArgs, RenderFragment<ContextMenuService>)

Opens the specified arguments.

Declaration

public void Open(MouseEventArgs args, RenderFragment<ContextMenuService> childContent)

Parameters

Type	Name	Description
MouseEventArgs	args	The instance containing the event data.
RenderFragment<ContextMenuService>	childContent	Content of the child.

Events

OnClose

Raises the Close event.

Declaration

public event Action OnClose

Event Type

Type	Description
Action

OnNavigate

Occurs when [on navigate].

Declaration

public event Action OnNavigate

Event Type

Type	Description
Action

OnOpen

Occurs when [on open].

Declaration

public event Action<MouseEventArgs, ContextMenuOptions> OnOpen

Event Type

Type	Description
Action<MouseEventArgs, ContextMenuOptions>