XAF Blazor - User Friendly Error Messages

Hello Geoffrey,

XAF's Blazor UI supports Text Notifications in v20.2.5. In older versions, you can emulate this functionality using one of the following options or use the intermediate build in the comments below.

1. ShowViewStrategy.ShowViewInPopupWindow
2. Standard JavaScript/ASP.NET Core Blazor APIs: https://www.google.com/search?q=blazor+show+modal+dialog.
3. UserFriendlyException as shown in the attached project. To implement it, do the following:
3.1. Check your SolutionName.Blazor\\Pages\_Host.cshtml file and make sure it contains the following line (if it is missing, add it):

Razor
<component type="typeof(AlertsHandler)" render-mode="Server" />

3.2. Throw UserFriendlyException from an Action:

C#
namespace SolutionName.Module.Controllers {
    public partial class UserFriendlyExceptionViewController : ViewController    {
        public UserFriendlyExceptionViewController() {
            InitializeComponent();
            SimpleAction testAction = new SimpleAction(this, "TestException", DevExpress.Persistent.Base.PredefinedCategory.Edit);
            testAction.Execute += (s, e) =>
            {
                throw new UserFriendlyException("Test UserFriendlyException");
            };
        }
    }
}