[Trimming] Fix several trimming warnings

src/Controls/src/Core/BindableProperty.cs

@@ -18,6 +18,7 @@ namespace Microsoft.Maui.Controls
 	public sealed class BindableProperty
 	{
 		internal const DynamicallyAccessedMemberTypes DeclaringTypeMembers = DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.PublicMethods;
+		internal const DynamicallyAccessedMemberTypes ReturnTypeMembers = DynamicallyAccessedMemberTypes.PublicParameterlessConstructor;
 
 		public delegate void BindingPropertyChangedDelegate(BindableObject bindable, object oldValue, object newValue);
 
@@ -70,7 +71,7 @@ public sealed class BindableProperty
 		/// <include file="../../docs/Microsoft.Maui.Controls/BindableProperty.xml" path="//Member[@MemberName='UnsetValue']/Docs/*" />
 		public static readonly object UnsetValue = new object();
 
-		BindableProperty(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWay,
+		BindableProperty(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWay,
 								 ValidateValueDelegate validateValue = null, BindingPropertyChangedDelegate propertyChanged = null, BindingPropertyChangingDelegate propertyChanging = null,
 								 CoerceValueDelegate coerceValue = null, BindablePropertyBindingChanging bindingChanging = null, bool isReadOnly = false, CreateDefaultValueDelegate defaultValueCreator = null)
 		{
@@ -125,6 +126,7 @@ public sealed class BindableProperty
 		public string PropertyName { get; }
 
 		/// <include file="../../docs/Microsoft.Maui.Controls/BindableProperty.xml" path="//Member[@MemberName='ReturnType']/Docs/*" />
+		[DynamicallyAccessedMembers(ReturnTypeMembers)] 
 		public Type ReturnType { get; }
 
 		internal BindablePropertyBindingChanging BindingChanging { get; private set; }
@@ -140,7 +142,7 @@ public sealed class BindableProperty
 		internal ValidateValueDelegate ValidateValue { get; private set; }
 
 		/// <include file="../../docs/Microsoft.Maui.Controls/BindableProperty.xml" path="//Member[@MemberName='Create']/Docs/*" />
-		public static BindableProperty Create(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue = null, BindingMode defaultBindingMode = BindingMode.OneWay,
+		public static BindableProperty Create(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue = null, BindingMode defaultBindingMode = BindingMode.OneWay,
 											  ValidateValueDelegate validateValue = null, BindingPropertyChangedDelegate propertyChanged = null, BindingPropertyChangingDelegate propertyChanging = null,
 											  CoerceValueDelegate coerceValue = null, CreateDefaultValueDelegate defaultValueCreator = null)
 		{
@@ -149,15 +151,15 @@ public sealed class BindableProperty
 		}
 
 		/// <include file="../../docs/Microsoft.Maui.Controls/BindableProperty.xml" path="//Member[@MemberName='CreateAttached']/Docs/*" />
-		public static BindableProperty CreateAttached(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWay,
+		public static BindableProperty CreateAttached(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWay,
 													  ValidateValueDelegate validateValue = null, BindingPropertyChangedDelegate propertyChanged = null, BindingPropertyChangingDelegate propertyChanging = null,
 													  CoerceValueDelegate coerceValue = null, CreateDefaultValueDelegate defaultValueCreator = null)
 		{
 			return CreateAttached(propertyName, returnType, declaringType, defaultValue, defaultBindingMode, validateValue, propertyChanged, propertyChanging, coerceValue, null, false, defaultValueCreator);
 		}
 
 		/// <include file="../../docs/Microsoft.Maui.Controls/BindableProperty.xml" path="//Member[@MemberName='CreateAttachedReadOnly']/Docs/*" />
-		public static BindablePropertyKey CreateAttachedReadOnly(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWayToSource,
+		public static BindablePropertyKey CreateAttachedReadOnly(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWayToSource,
 																 ValidateValueDelegate validateValue = null, BindingPropertyChangedDelegate propertyChanged = null, BindingPropertyChangingDelegate propertyChanging = null,
 																 CoerceValueDelegate coerceValue = null, CreateDefaultValueDelegate defaultValueCreator = null)
 		{
@@ -167,7 +169,7 @@ public sealed class BindableProperty
 		}
 
 		/// <include file="../../docs/Microsoft.Maui.Controls/BindableProperty.xml" path="//Member[@MemberName='CreateReadOnly']/Docs/*" />
-		public static BindablePropertyKey CreateReadOnly(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWayToSource,
+		public static BindablePropertyKey CreateReadOnly(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode = BindingMode.OneWayToSource,
 														 ValidateValueDelegate validateValue = null, BindingPropertyChangedDelegate propertyChanged = null, BindingPropertyChangingDelegate propertyChanging = null,
 														 CoerceValueDelegate coerceValue = null, CreateDefaultValueDelegate defaultValueCreator = null)
 		{
@@ -176,15 +178,15 @@ public sealed class BindableProperty
 					isReadOnly: true, defaultValueCreator: defaultValueCreator));
 		}
 
-		internal static BindableProperty Create(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode, ValidateValueDelegate validateValue,
+		internal static BindableProperty Create(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode, ValidateValueDelegate validateValue,
 												BindingPropertyChangedDelegate propertyChanged, BindingPropertyChangingDelegate propertyChanging, CoerceValueDelegate coerceValue, BindablePropertyBindingChanging bindingChanging,
 												CreateDefaultValueDelegate defaultValueCreator = null)
 		{
 			return new BindableProperty(propertyName, returnType, declaringType, defaultValue, defaultBindingMode, validateValue, propertyChanged, propertyChanging, coerceValue, bindingChanging,
 				defaultValueCreator: defaultValueCreator);
 		}
 
-		internal static BindableProperty CreateAttached(string propertyName, Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode, ValidateValueDelegate validateValue,
+		internal static BindableProperty CreateAttached(string propertyName, [DynamicallyAccessedMembers(ReturnTypeMembers)] Type returnType, [DynamicallyAccessedMembers(DeclaringTypeMembers)] Type declaringType, object defaultValue, BindingMode defaultBindingMode, ValidateValueDelegate validateValue,
 														BindingPropertyChangedDelegate propertyChanged, BindingPropertyChangingDelegate propertyChanging, CoerceValueDelegate coerceValue, BindablePropertyBindingChanging bindingChanging,
 														bool isReadOnly, CreateDefaultValueDelegate defaultValueCreator = null)
 		{

src/Controls/src/Core/DependencyService.cs

@@ -16,7 +16,7 @@ public static class DependencyService
 		static readonly object s_dependencyLock = new object();
 		static readonly object s_initializeLock = new object();
 
-		static readonly List<Type> DependencyTypes = new List<Type>();
+		static readonly List<DependencyType> DependencyTypes = new List<DependencyType>();
 		static readonly Dictionary<Type, DependencyData> DependencyImplementations = new Dictionary<Type, DependencyData>();
 
 		public static T Resolve<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] T>(DependencyFetchTarget fallbackFetchTarget = DependencyFetchTarget.GlobalInstance) where T : class
@@ -64,16 +64,14 @@ public static class DependencyService
 		public static void Register<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] T>() where T : class
 		{
 			Type type = typeof(T);
-			if (!DependencyTypes.Contains(type))
-				DependencyTypes.Add(type);
+			AddDependencyTypeIfNeeded(type);
 		}
 
 		public static void Register<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] T, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] TImpl>() where T : class where TImpl : class, T
 		{
 			Type targetType = typeof(T);
 			Type implementorType = typeof(TImpl);
-			if (!DependencyTypes.Contains(targetType))
-				DependencyTypes.Add(targetType);
+			AddDependencyTypeIfNeeded(targetType);
 
 			lock (s_dependencyLock)
 				DependencyImplementations[targetType] = new DependencyData { ImplementorType = implementorType };
@@ -83,16 +81,22 @@ public static class DependencyService
 		{
 			Type targetType = typeof(T);
 			Type implementorType = typeof(T);
-			if (!DependencyTypes.Contains(targetType))
-				DependencyTypes.Add(targetType);
+			AddDependencyTypeIfNeeded(targetType);
 
 			lock (s_dependencyLock)
 				DependencyImplementations[targetType] = new DependencyData { ImplementorType = implementorType, GlobalInstance = instance };
 		}
 
+		static void AddDependencyTypeIfNeeded(
+			[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] Type type)
+		{
+			if (!DependencyTypes.Any(t => t.Type == type))
+				DependencyTypes.Add(new DependencyType(type));
+		}
+
 		[return: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
 		static Type FindImplementor(Type target) =>
-			DependencyTypes.FirstOrDefault(t => target.IsAssignableFrom(t));
+			DependencyTypes.FirstOrDefault(t => target.IsAssignableFrom(t.Type))?.Type;
 
 		// Once we get essentials/cg converted to using startup.cs
 		// we will delete the initialize code from here and just use
@@ -137,10 +141,7 @@ public static void Register(Assembly[] assemblies)
 					for (int i = 0; i < attributes.Length; i++)
 					{
 						DependencyAttribute attribute = (DependencyAttribute)attributes[i];
-						if (!DependencyTypes.Contains(attribute.Implementor))
-						{
-							DependencyTypes.Add(attribute.Implementor);
-						}
+						AddDependencyTypeIfNeeded(attribute.Implementor);
 					}
 				}
 			}
@@ -169,5 +170,20 @@ class DependencyData
 			[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
 			public Type ImplementorType { get; set; }
 		}
+
+		class DependencyType : IEquatable<DependencyType>
+		{
+			[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
+			public Type Type { get; }
+
+			public DependencyType([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)] Type type)
+			{
+				Type = type;
+			}
+
+			public override int GetHashCode() => Type.GetHashCode();
+			public override bool Equals(object obj) => obj is DependencyType other && Equals(other);
+			public bool Equals(DependencyType other) => other.Type == Type;
+		}
 	}
 }

src/Controls/src/Core/Internals/CellExtensions.cs

@@ -9,28 +9,30 @@ namespace Microsoft.Maui.Controls.Internals
 	[EditorBrowsable(EditorBrowsableState.Never)]
 	public static class CellExtensions
 	{
-		public static bool GetIsGroupHeader<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
+		const DynamicallyAccessedMemberTypes ItemTypeMembers = BindableProperty.DeclaringTypeMembers | BindableProperty.ReturnTypeMembers;
+
+		public static bool GetIsGroupHeader<TView, [DynamicallyAccessedMembers(ItemTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
 		{
 			return TemplatedItemsList<TView, TItem>.GetIsGroupHeader(cell);
 		}
 
-		public static void SetIsGroupHeader<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TItem>(this TItem cell, bool value) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
+		public static void SetIsGroupHeader<TView, [DynamicallyAccessedMembers(ItemTypeMembers)] TItem>(this TItem cell, bool value) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
 		{
 			TemplatedItemsList<TView, TItem>.SetIsGroupHeader(cell, value);
 		}
 
-		public static TItem GetGroupHeaderContent<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
+		public static TItem GetGroupHeaderContent<TView, [DynamicallyAccessedMembers(ItemTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
 		{
 			var group = TemplatedItemsList<TView, TItem>.GetGroup(cell);
 			return group.HeaderContent;
 		}
 
-		public static int GetIndex<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
+		public static int GetIndex<TView, [DynamicallyAccessedMembers(ItemTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
 		{
 			return TemplatedItemsList<TView, TItem>.GetIndex(cell);
 		}
 
-		public static ITemplatedItemsList<TItem> GetGroup<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
+		public static ITemplatedItemsList<TItem> GetGroup<TView, [DynamicallyAccessedMembers(ItemTypeMembers)] TItem>(this TItem cell) where TView : BindableObject, ITemplatedItemsView<TItem> where TItem : BindableObject
 		{
 			return TemplatedItemsList<TView, TItem>.GetGroup(cell);
 		}

src/Controls/src/Core/ItemsView.cs

@@ -8,7 +8,7 @@
 namespace Microsoft.Maui.Controls
 {
 	/// <include file="../../docs/Microsoft.Maui.Controls/ItemsView.xml" path="Type[@FullName='Microsoft.Maui.Controls.ItemsView']/Docs/*" />
-	public abstract class ItemsView<[DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TVisual> : View, ITemplatedItemsView<TVisual> where TVisual : BindableObject
+	public abstract class ItemsView<[DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers | BindableProperty.ReturnTypeMembers)] TVisual> : View, ITemplatedItemsView<TVisual> where TVisual : BindableObject
 	{
 		/*
 		/// <summary>Bindable property for <see cref="InfiniteScrolling"/>.</summary>

src/Controls/src/Core/ResourceDictionary.cs

@@ -47,7 +47,7 @@ public void SetAndLoadSource(Uri value, string resourcePath, Assembly assembly,
 			//this will return a type if the RD as an x:Class element, and codebehind
 			var type = XamlResourceIdAttribute.GetTypeForPath(assembly, resourcePath);
 			if (type != null)
-				_mergedInstance = s_instances.GetValue(type, (key) => (ResourceDictionary)Activator.CreateInstance(key));
+				_mergedInstance = s_instances.GetValue(type, _ => (ResourceDictionary)Activator.CreateInstance(type));
 			else
 				_mergedInstance = DependencyService.Get<IResourcesLoader>().CreateFromResource<ResourceDictionary>(resourcePath, assembly, lineInfo);
 			OnValuesChanged(_mergedInstance.ToArray());

src/Controls/src/Core/Routing.cs

@@ -119,8 +119,15 @@ internal static void Clear()
 		}
 
 		/// <summary>Bindable property for attached property <c>Route</c>.</summary>
-		public static readonly BindableProperty RouteProperty =
-			BindableProperty.CreateAttached("Route", typeof(string), typeof(Routing), null,
+		public static readonly BindableProperty RouteProperty = CreateRouteProperty();
+
+		[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2111:ReflectionToDynamicallyAccessedMembers",
+			Justification = "The CreateAttached method has a DynamicallyAccessedMembers annotation for all public methods"
+			+ "on the declaring type. This includes the Routing.RegisterRoute(string, Type) method which also has a "
+			+ "DynamicallyAccessedMembers annotation and the trimmer can't guarantee the availability of the requirements"
+			+ "of the method. `BindableProperty` only needs methods starting with `Get`, so `RegisterRoute` is never accessed via reflection.")]
+		private static BindableProperty CreateRouteProperty()
+			=> BindableProperty.CreateAttached("Route", typeof(string), typeof(Routing), null,
 				defaultValueCreator: CreateDefaultRoute);
 
 		static object CreateDefaultRoute(BindableObject bindable)

src/Controls/src/Core/TemplatedItemsList.cs

@@ -15,7 +15,7 @@ namespace Microsoft.Maui.Controls.Internals
 {
 
 	[EditorBrowsable(EditorBrowsableState.Never)]
-	public sealed class TemplatedItemsList<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers)] TItem> : BindableObject, ITemplatedItemsList<TItem>, IList, IDisposable
+	public sealed class TemplatedItemsList<TView, [DynamicallyAccessedMembers(BindableProperty.DeclaringTypeMembers | BindableProperty.ReturnTypeMembers)] TItem> : BindableObject, ITemplatedItemsList<TItem>, IList, IDisposable
 												where TView : BindableObject, IItemsView<TItem>
 												where TItem : BindableObject
 	{