Clarify WPF metadata return type (#1694)

* move code to right folder; add snippet

* Clarify metadata type

dotnet-desktop-guide/net/wpf/data/snippets/data-binding-overview/csharp/MainWindow.xaml.cs → dotnet-desktop-guide/net/wpf/data/snippets/index/csharp/MainWindow.xaml.cs

@@ -23,6 +23,7 @@ public partial class MainWindow : Window
         public MainWindow()
         {
             InitializeComponent();
+            bindings.Metadata.PrintMetadata();
         }
     }
 }

dotnet-desktop-guide/net/wpf/data/snippets/index/csharp/Metadata.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Intrinsics.Arm;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace bindings
+{
+    class Metadata
+    {
+        //<print_metadata>
+        public static void PrintMetadata()
+        {
+            // Get the metadata for the property
+            PropertyMetadata metadata = TextBox.TextProperty.GetMetadata(typeof(TextBox));
+
+            // Check if metadata type is FrameworkPropertyMetadata
+            if (metadata is FrameworkPropertyMetadata frameworkMetadata)
+            {
+                System.Diagnostics.Debug.WriteLine($"TextBox.Text property metadata:");
+                System.Diagnostics.Debug.WriteLine($"  BindsTwoWayByDefault: {frameworkMetadata.BindsTwoWayByDefault}");
+                System.Diagnostics.Debug.WriteLine($"  IsDataBindingAllowed: {frameworkMetadata.IsDataBindingAllowed}");
+                System.Diagnostics.Debug.WriteLine($"        AffectsArrange: {frameworkMetadata.AffectsArrange}");
+                System.Diagnostics.Debug.WriteLine($"        AffectsMeasure: {frameworkMetadata.AffectsMeasure}");
+                System.Diagnostics.Debug.WriteLine($"         AffectsRender: {frameworkMetadata.AffectsRender}");
+                System.Diagnostics.Debug.WriteLine($"              Inherits: {frameworkMetadata.Inherits}");
+            }
+
+            /*  Displays:
+             *  
+             *  TextBox.Text property metadata:
+             *    BindsTwoWayByDefault: True
+             *    IsDataBindingAllowed: True
+             *          AffectsArrange: False
+             *          AffectsMeasure: False
+             *           AffectsRender: False
+             *                Inherits: False
+            */
+        }
+        //</print_metadata>
+    }
+}

dotnet-desktop-guide/net/wpf/data/snippets/index/vb/Metadata.vb

@@ -0,0 +1,34 @@
+Public Class Metadata
+
+    '<print_metadata>
+    Public Shared Sub PrintMetadata()
+
+        Dim metadata As PropertyMetadata = TextBox.TextProperty.GetMetadata(GetType(TextBox))
+        Dim frameworkMetadata As FrameworkPropertyMetadata = TryCast(metadata, FrameworkPropertyMetadata)
+
+        If frameworkMetadata IsNot Nothing Then
+
+            System.Diagnostics.Debug.WriteLine($"TextBox.Text property metadata:")
+            System.Diagnostics.Debug.WriteLine($"  BindsTwoWayByDefault: {frameworkMetadata.BindsTwoWayByDefault}")
+            System.Diagnostics.Debug.WriteLine($"  IsDataBindingAllowed: {frameworkMetadata.IsDataBindingAllowed}")
+            System.Diagnostics.Debug.WriteLine($"        AffectsArrange: {frameworkMetadata.AffectsArrange}")
+            System.Diagnostics.Debug.WriteLine($"        AffectsMeasure: {frameworkMetadata.AffectsMeasure}")
+            System.Diagnostics.Debug.WriteLine($"         AffectsRender: {frameworkMetadata.AffectsRender}")
+            System.Diagnostics.Debug.WriteLine($"              Inherits: {frameworkMetadata.Inherits}")
+
+            '  Displays:
+            '
+            '  TextBox.Text property metadata:
+            '    BindsTwoWayByDefault: True
+            '    IsDataBindingAllowed: True
+            '          AffectsArrange: False
+            '          AffectsMeasure: False
+            '           AffectsRender: False
+            '                Inherits: False
+        End If
+
+
+    End Sub
+    '</print_metadata>
+
+End Class