updates

Plugins/BTCPayServer.Plugins.Prism/Components/ValidationMessage2.razor

@@ -0,0 +1,38 @@
+@using System.Linq.Expressions
+@typeparam TValue
+@implements IDisposable
+
+@foreach (var message in EditContext.GetValidationMessages(_fieldIdentifier))
+{
+    <div @attributes="InputAttributes">
+        @message
+    </div>
+}
+
+@code {
+
+    [CascadingParameter]
+    private EditContext EditContext { get; set; }
+
+    [Parameter]
+    public Expression<Func<TValue>> For { get; set; }
+    
+    [Parameter(CaptureUnmatchedValues = true)]
+    public Dictionary<string, object>? InputAttributes { get; set; }
+
+    private FieldIdentifier _fieldIdentifier;
+
+    protected override void OnInitialized()
+    {
+        _fieldIdentifier = FieldIdentifier.Create(For);
+        EditContext.OnValidationStateChanged += HandleValidationStateChanged;
+    }
+
+    private void HandleValidationStateChanged(object o, ValidationStateChangedEventArgs args) => StateHasChanged();
+
+    public void Dispose()
+    {
+        EditContext.OnValidationStateChanged -= HandleValidationStateChanged;
+    }
+
+}