diff --git a/src/Adapters/Tests/WebForms/HybridRouteLinkTests.cs b/src/Adapters/Tests/WebForms/HybridRouteLinkTests.cs
index fe3cc1616d..fa368198c0 100644
--- a/src/Adapters/Tests/WebForms/HybridRouteLinkTests.cs
+++ b/src/Adapters/Tests/WebForms/HybridRouteLinkTests.cs
@@ -78,7 +78,7 @@ public async Task HybridRouteLink_SuffixAndQueryString()
         }
     }
 
-    class ControlTestViewModel
+    public class ControlTestViewModel
     {
         public int Value { get; set; } = 15;
 
@@ -90,7 +90,7 @@ class ControlTestViewModel
         };
     }
 
-    class ControlTestChildViewModel
+    public class ControlTestChildViewModel
     {
         public int Id { get; set; }
         public string Name { get; set; }
diff --git a/src/Framework/Framework/Compilation/Binding/TypeRegistry.cs b/src/Framework/Framework/Compilation/Binding/TypeRegistry.cs
index 50c28b67fc..55d154a2cf 100644
--- a/src/Framework/Framework/Compilation/Binding/TypeRegistry.cs
+++ b/src/Framework/Framework/Compilation/Binding/TypeRegistry.cs
@@ -35,7 +35,7 @@ public TypeRegistry(CompiledAssemblyCache compiledAssemblyCache, ImmutableDictio
             {
                 return expr;
             }
-            var matchedExpressions = resolvers.Select(r => r(name)).Where(e => e != null).Distinct(ExpressionTypeComparer.Instance).ToList();
+            var matchedExpressions = resolvers.Select(r => r(name)).WhereNotNull().Distinct(ExpressionTypeComparer.Instance).ToList();
             if (matchedExpressions.Count > 1)
             {
                 throw new InvalidOperationException($"The identifier '{name}' is ambiguous between the following types: {string.Join(", ", matchedExpressions.Select(e => e!.Type.ToCode()))}. Please specify the namespace explicitly.");
@@ -62,7 +62,7 @@ public TypeRegistry AddSymbols(IEnumerable<Func<string, Expression?>> symbols)
         [return: NotNullIfNotNull("type")]
         public static Expression? CreateStatic(Type? type)
         {
-            return type is { IsPublic: true } or { IsNestedPublic: true } ? new StaticClassIdentifierExpression(type) : null;
+            return type?.IsPublicType() == true ? new StaticClassIdentifierExpression(type) : null;
         }
 
         private static readonly ImmutableDictionary<string, Expression> predefinedTypes =
@@ -129,7 +129,7 @@ public TypeRegistry AddImportedTypes(CompiledAssemblyCache compiledAssemblyCache
             else return t => TypeRegistry.CreateStatic(compiledAssemblyCache.FindType(import.Namespace + "." + t));
         }
 
-        class ExpressionTypeComparer : IEqualityComparer<Expression?>
+        class ExpressionTypeComparer : IEqualityComparer<Expression>
         {
             public static readonly ExpressionTypeComparer Instance = new();
 
@@ -141,7 +141,7 @@ public bool Equals(Expression? x, Expression? y)
                 return ReferenceEquals(x.Type, y.Type);
             }
 
-            public int GetHashCode(Expression? obj) => obj?.Type.GetHashCode() ?? 0;
+            public int GetHashCode(Expression obj) => obj.Type.GetHashCode();
         }
     }
 }
diff --git a/src/Framework/Framework/Utils/ReflectionUtils.cs b/src/Framework/Framework/Utils/ReflectionUtils.cs
index 91d6c2aa00..3eaf1ebe5f 100644
--- a/src/Framework/Framework/Utils/ReflectionUtils.cs
+++ b/src/Framework/Framework/Utils/ReflectionUtils.cs
@@ -778,5 +778,18 @@ internal static Type AssignGenericParameters(Type t, IReadOnlyDictionary<Type, T
                 return t;
             }
         }
+
+        /// <summary>
+        /// Determines whether the type is public and has the entire chain of nested parents public.
+        /// </summary>
+        public static bool IsPublicType(this Type type)
+        {
+            if (type.IsPublic) return true;
+            if (type.IsNested)
+            {
+                return type.IsNestedPublic && IsPublicType(type.DeclaringType!);
+            }
+            return false;
+        }
     }
 }