fix: Properly resolve interface members in x:Bind

src/SourceGenerators/SourceGeneratorHelpers/Helpers/SymbolExtensions.cs

@@ -130,24 +130,42 @@ public static string GetDeclarationHeaderFromNamedTypeSymbol(this INamedTypeSymb
 
 		public static IEnumerable<ISymbol> GetAllMembersWithName(this ITypeSymbol? symbol, string name)
 		{
-			do
+			if (symbol != null)
 			{
-				if (symbol != null)
+				foreach (var member in symbol.GetMembers(name))
 				{
-					foreach (var member in symbol.GetMembers(name))
+					yield return member;
+				}
+			}
+
+			if (symbol?.TypeKind == TypeKind.Interface)
+			{
+				foreach (var @interface in symbol.AllInterfaces)
+				{
+					foreach (var member in @interface.GetMembers(name))
 					{
 						yield return member;
 					}
 				}
+			}
+			else
+			{
+				do
+				{
+					symbol = symbol?.BaseType;
 
-				symbol = symbol?.BaseType;
+					if (symbol == null)
+					{
+						break;
+					}
 
-				if (symbol == null)
-				{
-					break;
-				}
+					foreach (var member in symbol.GetMembers(name))
+					{
+						yield return member;
+					}
 
-			} while (symbol.SpecialType != SpecialType.System_Object);
+				} while (symbol.SpecialType != SpecialType.System_Object);
+			}
 		}
 
 		/// <summary>

src/SourceGenerators/Uno.UI.SourceGenerators.Tests/XamlCodeGeneratorTests/Given_Binding.cs

@@ -587,4 +587,89 @@ public MainPage()
 
 		await test.RunAsync();
 	}
+
+	[TestMethod]
+	public async Task TestInterfaceDerivesFromAnother()
+	{
+		var xamlFile = new XamlFile("MainPage.xaml", """
+			<Page
+				x:Class="TestRepro.MainPage"
+				xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+				xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+				xmlns:local="using:TestRepro"
+				xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+				xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+				mc:Ignorable="d">
+
+				<StackPanel>
+					<TextBox Text="{x:Bind MyFooInterface.Name, Mode=TwoWay}" />
+				</StackPanel>
+			</Page>
+			""");
+
+		var test = new Verify.Test(xamlFile)
+		{
+			TestState =
+			{
+				Sources =
+				{
+					"""
+					using System.ComponentModel;
+					using Microsoft.UI.Xaml.Controls;
+
+					namespace TestRepro
+					{
+						public sealed partial class MainPage : Page
+						{
+							public MainPage()
+							{
+								MyFooInterface = new MyBarClass("John Doe");
+								this.InitializeComponent();
+							}
+
+							private IMyFooInterface MyFooInterface { get; set; }
+						}
+
+						public partial class MyBarClass : INotifyPropertyChanged, IMyFooInterface
+						{
+							private string _name;
+
+							public MyBarClass(string name)
+							{
+								Name = name;
+							}
+
+							public string Name
+							{
+								get => _name;
+								set
+								{
+									if (_name != value)
+									{
+										_name = value;
+										PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Name)));
+									}
+								}
+							}
+
+							public event PropertyChangedEventHandler PropertyChanged;
+						}
+
+						public interface IMyFooInterface : INameProvider
+						{
+						}
+
+						public interface INameProvider
+						{
+							string Name { get; set; }
+						}
+					}
+
+					"""
+				}
+			}
+		}.AddGeneratedSources();
+
+		await test.RunAsync();
+	}
 }

src/SourceGenerators/Uno.UI.SourceGenerators.Tests/XamlCodeGeneratorTests/Out/TIDFA/XamlCodeGenerator_GlobalStaticResources.cs

@@ -0,0 +1,55 @@
+// <autogenerated />
+namespace MyProject
+{
+	/// <summary>
+	/// Contains all the static resources defined for the application
+	/// </summary>
+	public sealed partial class GlobalStaticResources
+	{
+		static bool _initialized;
+		private static bool _stylesRegistered;
+		private static bool _dictionariesRegistered;
+		internal static global::Uno.UI.Xaml.XamlParseContext __ParseContext_ { get; } = new global::Uno.UI.Xaml.XamlParseContext()
+		{
+			AssemblyName = "TestProject",
+		}
+		;
+
+		static GlobalStaticResources()
+		{
+			Initialize();
+		}
+		public static void Initialize()
+		{
+			if (!_initialized)
+			{
+				_initialized = true;
+				global::Uno.UI.GlobalStaticResources.Initialize();
+				global::Uno.UI.GlobalStaticResources.RegisterDefaultStyles();
+				global::Uno.UI.GlobalStaticResources.RegisterResourceDictionariesBySource();
+			}
+		}
+		public static void RegisterDefaultStyles()
+		{
+			if(!_stylesRegistered)
+			{
+				_stylesRegistered = true;
+				RegisterDefaultStyles_MainPage_d6cd66944958ced0c513e0a04797b51d();
+			}
+		}
+		// Register ResourceDictionaries using ms-appx:/// syntax, this is called for external resources
+		public static void RegisterResourceDictionariesBySource()
+		{
+			if(!_dictionariesRegistered)
+			{
+				_dictionariesRegistered = true;
+			}
+		}
+		// Register ResourceDictionaries using ms-resource:/// syntax, this is called for local resources
+		internal static void RegisterResourceDictionariesBySourceLocal()
+		{
+		}
+		static partial void RegisterDefaultStyles_MainPage_d6cd66944958ced0c513e0a04797b51d();
+
+	}
+}

src/SourceGenerators/Uno.UI.SourceGenerators.Tests/XamlCodeGeneratorTests/Out/TIDFA/XamlCodeGenerator_LocalizationResources.cs

@@ -0,0 +1,2 @@
+// <auto-generated />
+[assembly: global::System.Reflection.AssemblyMetadata("UnoHasLocalizationResources", "False")]

src/SourceGenerators/Uno.UI.SourceGenerators.Tests/XamlCodeGeneratorTests/Out/TIDFA/XamlCodeGenerator_MainPage_d6cd66944958ced0c513e0a04797b51d.cs

@@ -0,0 +1,193 @@
+// <autogenerated />
+#pragma warning disable CS0114
+#pragma warning disable CS0108
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using Uno.UI;
+using Uno.UI.Xaml;
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Controls.Primitives;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Documents;
+using Microsoft.UI.Xaml.Media;
+using Microsoft.UI.Xaml.Media.Animation;
+using Microsoft.UI.Xaml.Shapes;
+using Windows.UI.Text;
+using Uno.Extensions;
+using Uno;
+using Uno.UI.Helpers;
+using Uno.UI.Helpers.Xaml;
+using MyProject;
+
+#if __ANDROID__
+using _View = Android.Views.View;
+#elif __IOS__
+using _View = UIKit.UIView;
+#elif __MACOS__
+using _View = AppKit.NSView;
+#else
+using _View = Microsoft.UI.Xaml.UIElement;
+#endif
+
+namespace TestRepro
+{
+	partial class MainPage : global::Microsoft.UI.Xaml.Controls.Page
+	{
+		[global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+		private const string __baseUri_prefix_MainPage_d6cd66944958ced0c513e0a04797b51d = "ms-appx:///TestProject/";
+		[global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+		private const string __baseUri_MainPage_d6cd66944958ced0c513e0a04797b51d = "ms-appx:///TestProject/";
+		private global::Microsoft.UI.Xaml.NameScope __nameScope = new global::Microsoft.UI.Xaml.NameScope();
+		private void InitializeComponent()
+		{
+			NameScope.SetNameScope(this, __nameScope);
+			var __that = this;
+			base.IsParsing = true;
+			// Source 0\MainPage.xaml (Line 1:2)
+			base.Content = 
+			new global::Microsoft.UI.Xaml.Controls.StackPanel
+			{
+				IsParsing = true,
+				// Source 0\MainPage.xaml (Line 10:3)
+				Children = 
+				{
+					new global::Microsoft.UI.Xaml.Controls.TextBox
+					{
+						IsParsing = true,
+						// Source 0\MainPage.xaml (Line 11:4)
+					}
+					.MainPage_d6cd66944958ced0c513e0a04797b51d_XamlApply((MainPage_d6cd66944958ced0c513e0a04797b51dXamlApplyExtensions.XamlApplyHandler0)(c0 => 
+					{
+						/* _isTopLevelDictionary:False */
+						__that._component_0 = c0;
+						c0.SetBinding(
+							global::Microsoft.UI.Xaml.Controls.TextBox.TextProperty,
+							new Microsoft.UI.Xaml.Data.Binding()
+							{
+								Mode = global::Microsoft.UI.Xaml.Data.BindingMode.TwoWay,
+							}
+								.BindingApply(___b =>  /*defaultBindModeOneTime MyFooInterface.Name*/ global::Uno.UI.Xaml.BindingHelper.SetBindingXBindProvider(___b, __that, ___ctx => ___ctx is global::TestRepro.MainPage ___tctx ? ((true, ___tctx.MyFooInterface.Name)) : (false, default), (___ctx, __value) => { if(___ctx is global::TestRepro.MainPage ___tctx) ___tctx.MyFooInterface.Name = (string)global::Microsoft.UI.Xaml.Markup.XamlBindingHelper.ConvertValue(typeof(string), __value); } , new [] {"MyFooInterface.Name"}))
+						);
+						global::Uno.UI.FrameworkElementHelper.SetBaseUri(c0, __baseUri_MainPage_d6cd66944958ced0c513e0a04797b51d);
+						c0.CreationComplete();
+					}
+					))
+					,
+				}
+			}
+			.MainPage_d6cd66944958ced0c513e0a04797b51d_XamlApply((MainPage_d6cd66944958ced0c513e0a04797b51dXamlApplyExtensions.XamlApplyHandler1)(c1 => 
+			{
+				global::Uno.UI.FrameworkElementHelper.SetBaseUri(c1, __baseUri_MainPage_d6cd66944958ced0c513e0a04797b51d);
+				c1.CreationComplete();
+			}
+			))
+			;
+
+			this
+			.GenericApply(((c2) => 
+			{
+				// Source 0\MainPage.xaml (Line 1:2)
+
+				// WARNING Property c2.base does not exist on {http://schemas.microsoft.com/winfx/2006/xaml/presentation}Page, the namespace is http://www.w3.org/XML/1998/namespace. This error was considered irrelevant by the XamlFileGenerator
+			}
+			))
+			.GenericApply(((c3) => 
+			{
+				// Class TestRepro.MainPage
+				global::Uno.UI.FrameworkElementHelper.SetBaseUri(c3, __baseUri_MainPage_d6cd66944958ced0c513e0a04797b51d);
+				c3.CreationComplete();
+			}
+			))
+			;
+			OnInitializeCompleted();
+
+			Bindings = new MainPage_Bindings(this);
+			Loading += (s, e) =>
+			{
+				__that.Bindings.Update();
+				__that.Bindings.UpdateResources();
+			}
+			;
+		}
+		partial void OnInitializeCompleted();
+		private global::Microsoft.UI.Xaml.Markup.ComponentHolder _component_0_Holder  = new global::Microsoft.UI.Xaml.Markup.ComponentHolder(isWeak: true);
+		private global::Microsoft.UI.Xaml.Controls.TextBox _component_0
+		{
+			get
+			{
+				return (global::Microsoft.UI.Xaml.Controls.TextBox)_component_0_Holder.Instance;
+			}
+			set
+			{
+				_component_0_Holder.Instance = value;
+			}
+		}
+		private interface IMainPage_Bindings
+		{
+			void Initialize();
+			void Update();
+			void UpdateResources();
+			void StopTracking();
+			void NotifyXLoad(string name);
+		}
+		#pragma warning disable 0169 //  Suppress unused field warning in case Bindings is not used.
+		private IMainPage_Bindings Bindings;
+		#pragma warning restore 0169
+		[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+		private class MainPage_Bindings : IMainPage_Bindings
+		{
+			#if UNO_HAS_UIELEMENT_IMPLICIT_PINNING
+			private global::System.WeakReference _ownerReference;
+			private global::TestRepro.MainPage Owner { get => (global::TestRepro.MainPage)_ownerReference?.Target; set => _ownerReference = new global::System.WeakReference(value); }
+			#else
+			private global::TestRepro.MainPage Owner { get; set; }
+			#endif
+			public MainPage_Bindings(global::TestRepro.MainPage owner)
+			{
+				Owner = owner;
+			}
+			void IMainPage_Bindings.NotifyXLoad(string name)
+			{
+			}
+			void IMainPage_Bindings.Initialize()
+			{
+			}
+			void IMainPage_Bindings.Update()
+			{
+				var owner = Owner;
+				owner._component_0.ApplyXBind();
+			}
+			void IMainPage_Bindings.UpdateResources()
+			{
+				var owner = Owner;
+				owner._component_0.UpdateResourceBindings(resourceContextProvider: null);
+			}
+			void IMainPage_Bindings.StopTracking()
+			{
+			}
+		}
+	}
+}
+namespace MyProject
+{
+	static class MainPage_d6cd66944958ced0c513e0a04797b51dXamlApplyExtensions
+	{
+		public delegate void XamlApplyHandler0(global::Microsoft.UI.Xaml.Controls.TextBox instance);
+		[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
+		public static global::Microsoft.UI.Xaml.Controls.TextBox MainPage_d6cd66944958ced0c513e0a04797b51d_XamlApply(this global::Microsoft.UI.Xaml.Controls.TextBox instance, XamlApplyHandler0 handler)
+		{
+			handler(instance);
+			return instance;
+		}
+		public delegate void XamlApplyHandler1(global::Microsoft.UI.Xaml.Controls.StackPanel instance);
+		[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
+		public static global::Microsoft.UI.Xaml.Controls.StackPanel MainPage_d6cd66944958ced0c513e0a04797b51d_XamlApply(this global::Microsoft.UI.Xaml.Controls.StackPanel instance, XamlApplyHandler1 handler)
+		{
+			handler(instance);
+			return instance;
+		}
+	}
+}