Override ToString on more UIX classes

UIX/Microsoft/Iris/Audio/Sound.cs

@@ -59,5 +59,7 @@ namespace Microsoft.Iris.Audio
             sound.Play();
             sound.UnregisterUsage(this);
         }
+
+        public override string ToString() => $"{{Sound {SystemSoundEvent} '{Source}'}}";
     }
 }

UIX/Microsoft/Iris/Drawing/Font.cs

@@ -4,8 +4,6 @@
 // MVID: A56C6C9D-B7F6-46A9-8BDE-B3D9B8D60B11
 // Assembly location: C:\Program Files\Zune\UIX.dll
 
-using System.Text;
-
 namespace Microsoft.Iris.Drawing
 {
     internal sealed class Font
@@ -76,17 +74,6 @@ namespace Microsoft.Iris.Drawing
 
         public override int GetHashCode() => _fontName.GetHashCode() ^ _fontHeight.GetHashCode() ^ _altFontHeight.GetHashCode() ^ _fontStyle.GetHashCode();
 
-        public override string ToString()
-        {
-            StringBuilder stringBuilder = new StringBuilder();
-            stringBuilder.Append("{Font \"");
-            stringBuilder.Append(_fontName);
-            stringBuilder.Append("\" ");
-            stringBuilder.Append(_fontHeight);
-            stringBuilder.Append("pt ");
-            stringBuilder.Append(_fontStyle);
-            stringBuilder.Append("}");
-            return stringBuilder.ToString();
-        }
+        public override string ToString() => $"{{Font \"{_fontName}\" {_fontHeight}pt {_fontStyle}}}";
     }
 }

UIX/Microsoft/Iris/Drawing/UIImage.cs

@@ -190,5 +190,7 @@ namespace Microsoft.Iris.Drawing
         }
 
         public event ContentLoadCompleteHandler LoadComplete;
+
+        public override string ToString() => $"{{UIImage {RenderImage?.ToString() ?? "null"}}}";
     }
 }

UIX/Microsoft/Iris/Drawing/UriImage.cs

@@ -119,5 +119,7 @@ namespace Microsoft.Iris.Drawing
         {
             ScavengeImageCache.Instance.RemoveData(new ImageCacheKey(source, maximumSize, flippable, antialiasEdges));
         }
+
+        public override string ToString() => $"{{UriImage '{Source}' {RenderImage?.ToString() ?? "null"}}}";
     }
 }

UIX/Microsoft/Iris/Markup/EventSchema.cs

@@ -10,8 +10,8 @@ namespace Microsoft.Iris.Markup
 {
     public abstract class EventSchema : DisposableObject
     {
-        private TypeSchema _owner;
-        public static EventSchema[] EmptyList = new EventSchema[0];
+        private readonly TypeSchema _owner;
+        public readonly static EventSchema[] EmptyList = System.Array.Empty<EventSchema>();
 
         public EventSchema(TypeSchema owner)
         {
@@ -22,5 +22,7 @@ namespace Microsoft.Iris.Markup
         public TypeSchema Owner => _owner;
 
         public abstract string Name { get; }
+
+        public override string ToString() => $"{_owner.Name}.{Name}";
     }
 }

UIX/Microsoft/Iris/Markup/PropertySchema.cs

@@ -10,8 +10,8 @@ namespace Microsoft.Iris.Markup
 {
     public abstract class PropertySchema : DisposableObject
     {
-        public static PropertySchema[] EmptyList = new PropertySchema[0];
-        private TypeSchema _owner;
+        public readonly static PropertySchema[] EmptyList = System.Array.Empty<PropertySchema>();
+        private readonly TypeSchema _owner;
 
         public PropertySchema(TypeSchema owner)
         {
@@ -44,5 +44,7 @@ namespace Microsoft.Iris.Markup
         public abstract object GetValue(object instance);
 
         public abstract void SetValue(ref object instance, object value);
+
+        public override string ToString() => $"{Owner.Name}.{Name}";
     }
 }

UIX/Microsoft/Iris/Markup/SymbolRecord.cs

@@ -11,6 +11,8 @@ namespace Microsoft.Iris.Markup
         public string Name;
         public TypeSchema Type;
         public SymbolOrigin SymbolOrigin;
-        public static SymbolRecord[] EmptyList = new SymbolRecord[0];
+        public readonly static SymbolRecord[] EmptyList = System.Array.Empty<SymbolRecord>();
+
+        public override string ToString() => $"{Type} {Name}";
     }
 }

UIX/Microsoft/Iris/Markup/SymbolReference.cs

@@ -20,5 +20,7 @@ namespace Microsoft.Iris.Markup
         public string Symbol => _symbol;
 
         public SymbolOrigin Origin => _origin;
+
+        public override string ToString() => Symbol;
     }
 }

UIX/Microsoft/Iris/Markup/TypeSchema.cs

@@ -12,12 +12,12 @@ namespace Microsoft.Iris.Markup
 {
     public abstract class TypeSchema : DisposableObject
     {
-        private LoadResult _owner;
-        private ulong _id;
+        private readonly LoadResult _owner;
+        private readonly ulong _id;
         private Vector<TypeSchema> _equivalents;
         private static ulong s_uniqueId;
-        private static Map<ulong, TypeSchema> s_idToTypeSchema = new Map<ulong, TypeSchema>();
-        public static TypeSchema[] EmptyList = new TypeSchema[0];
+        private readonly static Map<ulong, TypeSchema> s_idToTypeSchema = new();
+        public readonly static TypeSchema[] EmptyList = Array.Empty<TypeSchema>();
 
         public TypeSchema(LoadResult owner)
         {
@@ -232,7 +232,7 @@ namespace Microsoft.Iris.Markup
 
         public void ShareEquivalents(Vector<TypeSchema> equivalents) => _equivalents = equivalents;
 
-        public virtual string ErrorContextDescription => string.Format("{0} (Owner='{1}')", Name, Owner.Uri ?? "Unavailable");
+        public virtual string ErrorContextDescription => $"{Name} (Owner='{Owner.Uri ?? "Unavailable"}')";
 
         public static string NameFromInstance(object instance) => !(instance is ISchemaInfo schemaInfo) ? instance.GetType().Name : schemaInfo.TypeSchema.Name;
 
@@ -244,5 +244,7 @@ namespace Microsoft.Iris.Markup
             s_idToTypeSchema.TryGetValue(id, out typeSchema);
             return typeSchema;
         }
+
+        public override string ToString() => $"typeof({Name})";
     }
 }

UIX/Microsoft/Iris/Markup/UIXTypeSchema.cs

@@ -11,10 +11,10 @@ namespace Microsoft.Iris.Markup
 {
     internal class UIXTypeSchema : TypeSchema
     {
-        private short _typeID;
-        private short _baseTypeID;
-        private string _name;
-        private string _alternateName;
+        private readonly short _typeID;
+        private readonly short _baseTypeID;
+        private readonly string _name;
+        private readonly string _alternateName;
         private TypeSchema _baseType;
         private DefaultConstructHandler _defaultConstructor;
         private ConstructorSchema[] _constructors;
@@ -28,9 +28,9 @@ namespace Microsoft.Iris.Markup
         private PerformOperationHandler _performOperation;
         private SupportsOperationHandler _supportsOperation;
         private FindCanonicalInstanceHandler _findCanonicalInstance;
-        private Type _instanceType;
-        private UIXTypeFlags _flags;
-        private static object[] EmptyParameterList = new object[0];
+        private readonly Type _instanceType;
+        private readonly UIXTypeFlags _flags;
+        private static readonly object[] EmptyParameterList = Array.Empty<object>();
 
         public UIXTypeSchema(
           short typeID,

UIX/Microsoft/Iris/ModelItems/NotifyList.cs

@@ -107,5 +107,7 @@ namespace Microsoft.Iris.ModelItems
                 return;
             ContentsChanged(this, new UIListContentsChangedArgs(type, oldIndex, newIndex));
         }
+
+        public override string ToString() => $"{{NotifyList Source=[{string.Join(", ", _source)}]}}";
     }
 }

UIX/Microsoft/Iris/ModelItems/Range.cs

@@ -74,6 +74,6 @@ namespace Microsoft.Iris.ModelItems
             return intList;
         }
 
-        public override string ToString() => string.Format("{{{0} to {1}}}", _begin, _end);
+        public override string ToString() => $"{{{_begin} to {_end}}}";
     }
 }

UIX/Microsoft/Iris/UI/UIClass.cs

@@ -1378,7 +1378,7 @@ namespace Microsoft.Iris.UI
 
         internal void SetEventContext(EventContext eventContext) => _eventContext = eventContext;
 
-        public override string ToString() => _typeSchema.ToString();
+        public override string ToString() => $"UI[{_typeSchema.Name}]";
 
         private class SavedFocusState
         {