AuthenticationStandardEvents.OnUserValidated Property

Specifies custom logic used to implement additional validation checks that run after the standard checks succeed.

Namespace: DevExpress.ExpressApp.Security

Assembly: DevExpress.ExpressApp.Security.v24.1.dll

NuGet Package: DevExpress.ExpressApp.Security

Declaration

C#

public Action<ValidateUserContext> OnUserValidated { get; set; }

VB.NET

Public Property OnUserValidated As Action(Of ValidateUserContext)

Property Value

Type	Description
Action<DevExpress.ExpressApp.Security.ValidateUserContext>	A delegate method that implements custom logic.

Remarks

Use this event to implement additional user validation logic on top of the standard validation checks. The specified validation logic runs after the standard checks succeed. If validation fails, assign an AuthenticationException to the context.ValidationError property.

Important

Do not throw an exception directly from the handler method. This can lead to faulty behavior.

File: MySolution.Blazor.Server\Startup.cs, MySolution.Win\Startup.cs, MySolution.WebApi\Startup.cs

The following code snippet demonstrates how to use the OnUserValidated event:

C#

services.AddXaf(Configuration, builder => {
    // ...
    builder.Security
        .AddPasswordAuthentication(options => {
            options.IsSupportChangePassword = true;
            options.Events.OnUserValidated += context => { 
                if(((CustomLogonParameters)context.LogonParameters).CustomData == "FAIL") { 
                    context.ValidationError = new AuthenticationException(context.User.UserName); 
                }
            };
        });
        // ...
});