From a2daea9d1a085452c79f7e9628911b04603d606d Mon Sep 17 00:00:00 2001
From: Alvaro Rivoir <alvaro.rivoir@developertools.com>
Date: Fri, 31 May 2024 12:49:56 -0300
Subject: [PATCH] fix #881

---
 .../ComponentModel/ObservableValidator.cs         |  1 +
 .../Test_ObservableValidator.cs                   | 15 ++++++++++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/CommunityToolkit.Mvvm/ComponentModel/ObservableValidator.cs b/src/CommunityToolkit.Mvvm/ComponentModel/ObservableValidator.cs
index 02921bf07..6c83c9125 100644
--- a/src/CommunityToolkit.Mvvm/ComponentModel/ObservableValidator.cs
+++ b/src/CommunityToolkit.Mvvm/ComponentModel/ObservableValidator.cs
@@ -123,6 +123,7 @@ protected ObservableValidator(ValidationContext validationContext)
     }
 
     /// <inheritdoc/>
+    [Display(AutoGenerateField = false)]
     public bool HasErrors => this.totalErrors > 0;
 
     /// <summary>
diff --git a/tests/CommunityToolkit.Mvvm.UnitTests/Test_ObservableValidator.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Test_ObservableValidator.cs
index af4b9f4be..7b09d1073 100644
--- a/tests/CommunityToolkit.Mvvm.UnitTests/Test_ObservableValidator.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Test_ObservableValidator.cs
@@ -607,7 +607,20 @@ public void Test_ObservableValidator_ValidateAllProperties_IncludeInheritedPrope
         Assert.IsFalse(model.HasErrors);
         Assert.IsTrue(events.Count == 1);
 
-        Assert.IsTrue(events.Any(e => e.PropertyName == nameof(DerivedModelWithValidatableProperties.Name)));    }
+        Assert.IsTrue(events.Any(e => e.PropertyName == nameof(DerivedModelWithValidatableProperties.Name)));
+    }
+
+    // See https://github.com/CommunityToolkit/dotnet/issues/881
+    [TestMethod]
+    public void Test_ObservableValidator_HasErrors_IncludeNonAutogenerateAttribute()
+    {
+        DerivedModelWithValidatableProperties model = new();
+
+        DisplayAttribute? displayAttribute = model.GetType().GetProperty(nameof(ObservableValidator.HasErrors))?.GetCustomAttribute<DisplayAttribute>();
+
+        Assert.IsNotNull(displayAttribute);
+        Assert.IsFalse(displayAttribute.AutoGenerateField);
+    }
 
     public class Person : ObservableValidator
     {