View.ErrorMessages Property

Allows access to the current View‘s message collection.

Namespace : DevExpress.ExpressApp

Assembly : DevExpress.ExpressApp.v25.2.dll

NuGet Package : DevExpress.ExpressApp

Declaration

• C#
• VB.NET

public ErrorMessages ErrorMessages { get; }

Public ReadOnly Property ErrorMessages As ErrorMessages

Property Value

An ErrorMessages object which is used to access the messages.

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Remarks

Each message contains an image and text associated with a specific property name. For example, the following code snippet adds a tooltip to the Email property in an XAF ASP.NET Core Blazor application:

• C#

using DevExpress.ExpressApp;
using MySolution.Module.BusinessObjects;
namespace MySolution.Blazor.Server;
public class ErrorMessageController : ObjectViewController<DetailView, Employee> {
    protected override void OnActivated() {
        base.OnActivated();
        View.ErrorMessages.AddMessage(nameof(Employee.Email),
        View.CurrentObject,
        "Example: [email protected]");
    }
}

The following image demonstrates the result in an ASP.NET Core Blazor application:

The Validation Module‘s ResultsHighlightController uses the ErrorMessages property. For more information, refer to the following topic: Built-in Controllers and Actions in Extra Modules.

See Also

View Class

View Members

DevExpress.ExpressApp Namespace