support for dynamic switching languages

src/Shared/HandyControl_Shared/Tools/Extension/LangExtension.cs

@@ -0,0 +1,42 @@
+using HandyControl.Properties.Langs;
+using System;
+using System.Windows;
+using System.Windows.Data;
+using System.Windows.Markup;
+
+namespace HandyControl.Tools.Extension
+{
+    public class LangExtension : MarkupExtension
+    {
+        public LangExtension()
+        {
+
+        }
+
+        public LangExtension(string key) => Key = key;
+
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            if (!(serviceProvider.GetService(typeof(IProvideValueTarget)) is IProvideValueTarget pvt))
+                return null;
+
+            if (!(pvt.TargetObject is DependencyObject targetObject))
+                return null;
+
+            if (!(pvt.TargetProperty is DependencyProperty targetProperty))
+                return null;
+
+            var binding = new Binding(Key)
+            {
+                Source = LangSource,
+                Mode = BindingMode.OneWay
+            };
+            BindingOperations.SetBinding(targetObject, targetProperty, binding);
+            return binding.ProvideValue(serviceProvider);
+        }
+
+        public string Key { get; set; }
+
+        public virtual object LangSource => LangDecorator.Instance;
+    }
+}