MessageOptions.CancelDelegate Property

Specifies a delegate that is executed on a Cancel button click in WinForms applications or close button click in ASP.NET Core Blazor applications.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v25.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public Action CancelDelegate { get; set; }

VB.NET

Public Property CancelDelegate As Action

Property Value

Type	Description
Action	A Action that is executed on a Cancel button click.

Remarks

WinForms UI

This parameter is supported in WinForms applications when the WinMessageOptions.Type property set to Flyout. The code snippet below demonstrates how to use this property.

C#

using DevExpress.ExpressApp;
public class ProjectTaskController : ViewController {
    //…
    MessageOptions options = new MessageOptions();
    options.CancelDelegate = () => {
        //Place here your code that is executed on a Cancel button click.
    };
    //…
    Application.ShowViewStrategy.ShowMessage(options);
}

VB.NET

Imports DevExpress.ExpressApp
Public Class ProjectTaskController
    Inherits ViewController
    '…
    Private options As New MessageOptions()
    options.CancelDelegate = Sub()
        'Place here your code that is executed on a Cancel button click.
    End Sub
    '…
    Application.ShowViewStrategy.ShowMessage(options)
End Class

ASP.NET Core Blazor UI

Use the CancelDelegate property to specify a delegate that is executed when a user clicks the notification’s close button.