PowerShell · GregoireLD · Aug 12, 2025 · Aug 16, 2025 · Aug 16, 2025 · Aug 20, 2025
@@ -312,7 +312,7 @@ internal GridHeader(OutGridViewCommand parentCmd)
             internal static GridHeader ConstructGridHeader(PSObject input, OutGridViewCommand parentCmd)
             {
                 if (DefaultScalarTypes.IsTypeInList(input.TypeNames) ||
-                    !OutOfBandFormatViewManager.HasNonRemotingProperties(input))
+                    OutOfBandFormatViewManager.IsPropertyLessObject(input))
                 {
                     return new ScalarTypeHeader(parentCmd, input);
                 }

@@ -465,19 +465,46 @@ private static ViewGenerator SelectViewGeneratorFromProperties(FormatShape shape
     /// </summary>
     internal static class OutOfBandFormatViewManager
     {
+        internal static bool IsPropertyLessObject(PSObject so)
+        {
+            // Using an enumerator to avoid the ExpandAll costs
+            var propertiesEnumerator = so.Properties.GetEnumerator();
+
+            try
+            {
+                // Manually enumerate properties - Maximum iterations : 6 (5 Remoting properties + 1)
+                while (propertiesEnumerator.MoveNext())
+                {
+                    var property = propertiesEnumerator.Current;
+
+                    // Skip remoting properties
+                    if (IsNotRemotingProperty(property.Name))
+                    {
+                        // Found a non-remoting property - object is NOT propertyless
+                        return false;
+                    }
+                }
+
+                // Only remoting properties found (or no properties at all)
+                return true;
+            }
+            finally
+            {
+                // Clean up the enumerator if it's IDisposable
+                (propertiesEnumerator as IDisposable)?.Dispose();
+            }
+        }
+
         private static bool IsNotRemotingProperty(string name)
         {
             var isRemotingPropertyName = name.Equals(RemotingConstants.ComputerNameNoteProperty, StringComparison.OrdinalIgnoreCase)
                    || name.Equals(RemotingConstants.ShowComputerNameNoteProperty, StringComparison.OrdinalIgnoreCase)
                    || name.Equals(RemotingConstants.RunspaceIdNoteProperty, StringComparison.OrdinalIgnoreCase)
-                   || name.Equals(RemotingConstants.SourceJobInstanceId, StringComparison.OrdinalIgnoreCase);
+                   || name.Equals(RemotingConstants.SourceJobInstanceId, StringComparison.OrdinalIgnoreCase)
+                   || name.Equals(RemotingConstants.EventObject, StringComparison.OrdinalIgnoreCase);
             return !isRemotingPropertyName;
         }
 
-        private static readonly MemberNamePredicate NameIsNotRemotingProperty = IsNotRemotingProperty;
-
-        internal static bool HasNonRemotingProperties(PSObject so) => so.GetFirstPropertyOrDefault(NameIsNotRemotingProperty) != null;
-
         internal static FormatEntryData GenerateOutOfBandData(TerminatingErrorContext errorContext, PSPropertyExpressionFactory expressionFactory,
                     TypeInfoDataBase db, PSObject so, int enumerationLimit, bool useToStringFallback, out List<ErrorRecord> errors)
         {
@@ -503,8 +530,9 @@ internal static FormatEntryData GenerateOutOfBandData(TerminatingErrorContext er
             }
             else
             {
+                // If we have a scalar type, or no visible properties, we fallback to a ToString call
                 if (DefaultScalarTypes.IsTypeInList(typeNames)
-                    || !HasNonRemotingProperties(so))
+                    || IsPropertyLessObject(so))
                 {
                     // we force a ToString() on well known types
                     return GenerateOutOfBandObjectAsToString(so);
@@ -515,12 +543,6 @@ internal static FormatEntryData GenerateOutOfBandData(TerminatingErrorContext er
                     return null;
                 }
 
-                // we must check we have enough properties for a list view
-                if (new PSPropertyExpression("*").ResolveNames(so).Count == 0)
-                {
-                    return null;
-                }
-
                 // we do not have a view, we default to list view
                 // process an out of band view as a default
                 outOfBandViewGenerator = new ListViewGenerator();

@@ -46,6 +46,27 @@ Describe "Hidden properties should not be returned by the 'FirstOrDefault' primi
         $outstring.Trim() | Should -BeLike "*.Hidden2"
     }
 
+    It "Formatting for an object with only hidden property should use 'ToString' after a Get-Member call" {
+        class Hidden {
+            hidden $Param = 'Foo'
+            [String]ToString() { return 'MyString' }
+        }
+
+        $hiddenObjectOne = [Hidden]::new()
+        $hiddenObjectOne | Get-Member | Out-Null
+        $outstring = $hiddenObjectOne | Out-String
+        $outstring.Trim() | Should -BeExactly "MyString"
+
+        class Hidden2 {
+            hidden $Param = 'Foo'
+        }
+
+        $hiddenObjectTwo = [Hidden2]::new()
+        $hiddenObjectTwo | Get-Member | Out-Null
+        $outstring = $hiddenObjectTwo | Out-String
+        $outstring.Trim() | Should -BeLike "*.Hidden2"
+    }
+
     It 'Formatting for an object with no-hidden property should use the default view' {
         class Params {
             $Param = 'Foo'