Class DialogService

Class DialogService. Contains various methods with options to open and close dialogs. Should be added as scoped service in the application services and RadzenDialog should be added in application main layout.

Inheritance
System.Object
DialogService
Namespace: Radzen
Assembly: Radzen.Blazor.dll
Syntax
public class DialogService : IDisposable
Examples
@inject DialogService DialogService
<RadzenButton Text="Show dialog with inline Blazor content" Click=@ShowInlineDialog />
@code {
 async Task ShowInlineDialog()
 {
   var result = await DialogService.OpenAsync("Simple Dialog", ds =>
     @<div>
         <p Style="margin-bottom: 1rem">Confirm?</p>
         <div class="row">
             <div class="col-md-12">
                 <RadzenButton Text="Ok" Click="() => ds.Close(true)" Style="margin-bottom: 10px; width: 150px" />
                 <RadzenButton Text="Cancel" Click="() => ds.Close(false)" ButtonStyle="ButtonStyle.Base"  Style="margin-bottom: 10px; width: 150px"/>
                 <RadzenButton Text="Refresh" Click="(() => { orderID = 10249; ds.Refresh(); })" ButtonStyle="ButtonStyle.Info"  Style="margin-bottom: 10px; width: 150px"/>
                 Order ID: @orderID
             </div>
         </div>
     </div>);
   Console.WriteLine($"Dialog result: {result}");
 }
}

Constructors

DialogService(NavigationManager, IJSRuntime)

Initializes a new instance of the DialogService class.

Declaration
public DialogService(NavigationManager uriHelper, IJSRuntime jsRuntime)
Parameters
Type Name Description
NavigationManager uriHelper

The URI helper.
IJSRuntime jsRuntime

IJSRuntime instance.

Fields

dialogs

The dialogs

Declaration
protected List<object> dialogs
Field Value
Type Description
List<System.Object>

tasks

The tasks

Declaration
protected List<TaskCompletionSource<dynamic>> tasks
Field Value
Type Description
List<TaskCompletionSource<System.Object>>

Methods

Alert(RenderFragment, String, AlertOptions, Nullable<CancellationToken>)

Displays a alert dialog.

Declaration
public virtual async Task<bool?> Alert(RenderFragment message, string title = "Message", AlertOptions options = null, CancellationToken? cancellationToken = null)
Parameters
Type Name Description
RenderFragment message

The message displayed to the user.
System.String title

The text displayed in the title bar of the dialog.
AlertOptions options

The options.
System.Nullable<CancellationToken> cancellationToken

The cancellation token.
Returns
Type Description
Task<System.Nullable<System.Boolean>>

true if the user clicked the OK button, false otherwise.

Alert(String, String, AlertOptions, Nullable<CancellationToken>)

Displays a alert dialog.

Declaration
public virtual async Task<bool?> Alert(string message = "", string title = "Message", AlertOptions options = null, CancellationToken? cancellationToken = null)
Parameters
Type Name Description
System.String message

The message displayed to the user.
System.String title

The text displayed in the title bar of the dialog.
AlertOptions options

The options.
System.Nullable<CancellationToken> cancellationToken

The cancellation token.
Returns
Type Description
Task<System.Nullable<System.Boolean>>

true if the user clicked the OK button, false otherwise.

Close(Object)

Closes the last opened dialog with optional result.

Declaration
public virtual void Close(dynamic result = null)
Parameters
Type Name Description
System.Object result

The result.

CloseSide(Object)

Closes the side dialog

Declaration
public void CloseSide(dynamic result = null)
Parameters
Type Name Description
System.Object result

The result of the Dialog

Confirm(RenderFragment, String, ConfirmOptions, Nullable<CancellationToken>)

Displays a confirmation dialog.

Declaration
public virtual async Task<bool?> Confirm(RenderFragment message, string title = "Confirm", ConfirmOptions options = null, CancellationToken? cancellationToken = null)
Parameters
Type Name Description
RenderFragment message

The message displayed to the user.
System.String title

The text displayed in the title bar of the dialog.
ConfirmOptions options

The options.
System.Nullable<CancellationToken> cancellationToken

The cancellation token.
Returns
Type Description
Task<System.Nullable<System.Boolean>>

true if the user clicked the OK button, false otherwise.

Confirm(String, String, ConfirmOptions, Nullable<CancellationToken>)

Displays a confirmation dialog.

Declaration
public virtual async Task<bool?> Confirm(string message = "Confirm?", string title = "Confirm", ConfirmOptions options = null, CancellationToken? cancellationToken = null)
Parameters
Type Name Description
System.String message

The message displayed to the user.
System.String title

The text displayed in the title bar of the dialog.
ConfirmOptions options

The options.
System.Nullable<CancellationToken> cancellationToken

The cancellation token.
Returns
Type Description
Task<System.Nullable<System.Boolean>>

true if the user clicked the OK button, false otherwise.

Dispose()

Declaration
public void Dispose()

Open(String, RenderFragment<DialogService>, DialogOptions)

Opens a dialog with the specified content.

Declaration
public virtual void Open(string title, RenderFragment<DialogService> childContent, DialogOptions options = null)
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the dialog.
RenderFragment<DialogService> childContent

The content displayed in the dialog.
DialogOptions options

The dialog options.

Open(String, Type, Dictionary<String, Object>, DialogOptions)

Opens a dialog with the specified arguments.

Declaration
public virtual void Open(string title, Type componentType, Dictionary<string, object> parameters = null, DialogOptions options = null)
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the dialog.
Type componentType

The type of the component to be displayed in the dialog. Must inherit from .
Dictionary<System.String, System.Object> parameters

The dialog parameters.
DialogOptions options

The dialog options.

Open<T>(String, Dictionary<String, Object>, DialogOptions)

Opens a dialog with the specified arguments.

Declaration
public virtual void Open<T>(string title, Dictionary<string, object> parameters = null, DialogOptions options = null)
    where T : ComponentBase
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the dialog.
Dictionary<System.String, System.Object> parameters

The dialog parameters.
DialogOptions options

The dialog options.
Type Parameters
Name Description
T

The type of the Blazor component which will be displayed in a dialog.

OpenAsync(RenderFragment<DialogService>, RenderFragment<DialogService>, DialogOptions, Nullable<CancellationToken>)

Opens a dialog with the specified content.

Declaration
public virtual Task<dynamic> OpenAsync(RenderFragment<DialogService> titleContent, RenderFragment<DialogService> childContent, DialogOptions options = null, CancellationToken? cancellationToken = null)
Parameters
Type Name Description
RenderFragment<DialogService> titleContent

The content displayed in the title bar of the dialog.
RenderFragment<DialogService> childContent

The content displayed in the dialog.
DialogOptions options

The dialog options.
System.Nullable<CancellationToken> cancellationToken

The cancellation token.
Returns
Type Description
Task<System.Object>

The value passed as argument to Close(Object).

OpenAsync(String, RenderFragment<DialogService>, DialogOptions, Nullable<CancellationToken>)

Opens a dialog with the specified content.

Declaration
public virtual Task<dynamic> OpenAsync(string title, RenderFragment<DialogService> childContent, DialogOptions options = null, CancellationToken? cancellationToken = null)
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the dialog.
RenderFragment<DialogService> childContent

The content displayed in the dialog.
DialogOptions options

The dialog options.
System.Nullable<CancellationToken> cancellationToken

The cancellation token.
Returns
Type Description
Task<System.Object>

The value passed as argument to Close(Object).

OpenAsync(String, Type, Dictionary<String, Object>, DialogOptions)

Opens a dialog with the specified arguments dynamically.

Declaration
public virtual Task<dynamic> OpenAsync(string title, Type componentType, Dictionary<string, object> parameters = null, DialogOptions options = null)
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the dialog.
Type componentType

The type of the Blazor component to be displayed in a dialog. Must inherit from .
Dictionary<System.String, System.Object> parameters

The dialog parameters, passed as property values of the specified component.
DialogOptions options

The dialog options.
Returns
Type Description
Task<System.Object>

A task that represents the result passed as an argument to Close(Object).

OpenAsync<T>(String, Dictionary<String, Object>, DialogOptions)

Opens a dialog with the specified arguments.

Declaration
public virtual Task<dynamic> OpenAsync<T>(string title, Dictionary<string, object> parameters = null, DialogOptions options = null)
    where T : ComponentBase
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the dialog.
Dictionary<System.String, System.Object> parameters

The dialog parameters. Passed as property values of T.
DialogOptions options

The dialog options.
Returns
Type Description
Task<System.Object>

The value passed as argument to Close(Object).
Type Parameters
Name Description
T

The type of the Blazor component which will be displayed in a dialog.

OpenSide(String, Type, Dictionary<String, Object>, SideDialogOptions)

Opens a side dialog with the specified arguments dynamically.

Declaration
public void OpenSide(string title, Type componentType, Dictionary<string, object> parameters = null, SideDialogOptions options = null)
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the side dialog.
Type componentType

The type of the Blazor component to be displayed in the side dialog. Must inherit from .
Dictionary<System.String, System.Object> parameters

The dialog parameters, passed as property values of the specified component.
SideDialogOptions options

The side dialog options.

OpenSide<T>(String, Dictionary<String, Object>, SideDialogOptions)

Opens a side dialog with the specified arguments

Declaration
public void OpenSide<T>(string title, Dictionary<string, object> parameters = null, SideDialogOptions options = null)
    where T : ComponentBase
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the side dialog.
Dictionary<System.String, System.Object> parameters

The dialog parameters. Passed as property values of T
SideDialogOptions options

The side dialog options.
Type Parameters
Name Description
T

The type of Blazor component which will be displayed in the side dialog.

OpenSideAsync(String, Type, Dictionary<String, Object>, SideDialogOptions)

Opens a side dialog with the specified arguments dynamically.

Declaration
public Task<dynamic> OpenSideAsync(string title, Type componentType, Dictionary<string, object> parameters = null, SideDialogOptions options = null)
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the side dialog.
Type componentType

The type of the Blazor component to be displayed in the side dialog. Must inherit from .
Dictionary<System.String, System.Object> parameters

The dialog parameters, passed as property values of the specified component.
SideDialogOptions options

The side dialog options.
Returns
Type Description
Task<System.Object>

A task that represents the result passed as an argument to CloseSide(Object).

OpenSideAsync<T>(String, Dictionary<String, Object>, SideDialogOptions)

Opens a side dialog with the specified arguments

Declaration
public Task<dynamic> OpenSideAsync<T>(string title, Dictionary<string, object> parameters = null, SideDialogOptions options = null)
    where T : ComponentBase
Parameters
Type Name Description
System.String title

The text displayed in the title bar of the side dialog.
Dictionary<System.String, System.Object> parameters

The dialog parameters. Passed as property values of T
SideDialogOptions options

The side dialog options.
Returns
Type Description
Task<System.Object>

A task that completes when the dialog is closed or a new one opened
Type Parameters
Name Description
T

The type of Blazor component which will be displayed in the side dialog.

Refresh()

Invokes OnRefresh.

Declaration
public void Refresh()

Events

OnClose

Raises the Close event.

Declaration
public event Action<dynamic> OnClose
Event Type
Type Description
Action<System.Object>

OnOpen

Occurs when a new dialog is open.

Declaration
public event Action<string, Type, Dictionary<string, object>, DialogOptions> OnOpen
Event Type
Type Description
Action<System.String, Type, Dictionary<System.String, System.Object>, DialogOptions>

OnRefresh

Occurs when [on refresh].

Declaration
public event Action OnRefresh
Event Type
Type Description
Action

OnSideClose

Raises the Close event for the side dialog

Declaration
public event Action<dynamic> OnSideClose
Event Type
Type Description
Action<System.Object>

OnSideOpen

Raises the Open event for the side dialog

Declaration
public event Action<Type, Dictionary<string, object>, SideDialogOptions> OnSideOpen
Event Type
Type Description
Action<Type, Dictionary<System.String, System.Object>, SideDialogOptions>

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