Updated GetValue to ReadLocalValue

Author: shweaver-MSFT

Microsoft.Toolkit.Uwp.UI.Controls.Input/TokenizingTextBox/TokenizingTextBoxItem.AutoSuggestBox.cs

@@ -353,18 +353,15 @@ void OnTokenCountChanged(TokenizingTextBox ttb, object value = null)
                 maxTokensCounter.Text = $"{currentTokens}/{maxTokens}";
                 maxTokensCounter.Visibility = Visibility.Visible;
 
-                maxTokensCounter.Foreground = (currentTokens == maxTokens)
+                maxTokensCounter.Foreground = (currentTokens >= maxTokens)
                     ? new SolidColorBrush(Colors.Red)
                     : _autoSuggestBox.Foreground;
             }
 
             ttbi.Owner.TokenItemAdded -= OnTokenCountChanged;
             ttbi.Owner.TokenItemRemoved -= OnTokenCountChanged;
 
-            // I would have like to compared to DependencyProperty.UnsetValue, but MaximumTokensProperty value is returning 0 even though we didn't set it!
-            // This means that the token counter will not show up for a specified maximum value of 0. However, it's a pretty uncommon scenario to offer a picker
-            // with no ability to add items. If the case does arrive where the ttb should be unusable by design, developers should disable the control instead or setting the maximum to 0.
-            if (Content is ITokenStringContainer str && str.IsLast && ttbi?.Owner != null && (int)ttbi.Owner.GetValue(TokenizingTextBox.MaximumTokensProperty) > 0)
+            if (Content is ITokenStringContainer str && str.IsLast && ttbi?.Owner != null && ttbi.Owner.ReadLocalValue(TokenizingTextBox.MaximumTokensProperty) != DependencyProperty.UnsetValue)
             {
                 ttbi.Owner.TokenItemAdded += OnTokenCountChanged;
                 ttbi.Owner.TokenItemRemoved += OnTokenCountChanged;