添加项目文件。

TextSearch.cs

@@ -0,0 +1,36 @@
+using System.Windows;
+
+namespace AttachedProp
+{
+    public class TextSearch
+    {
+        // Using a DependencyProperty as the backing store for IsTextMatch.  This enables animation, styling, binding, etc...
+        public static readonly DependencyProperty IsTextMatchProperty =
+            DependencyProperty.RegisterAttached("IsTextMatch", typeof(bool), typeof(TextSearch), new UIPropertyMetadata(false));
+
+        // Using a DependencyProperty as the backing store for SearchValue.  This enables animation, styling, binding, etc...
+        public static readonly DependencyProperty SearchValueProperty =
+            DependencyProperty.RegisterAttached("SearchValue", typeof(string), typeof(TextSearch),
+                new FrameworkPropertyMetadata(string.Empty, FrameworkPropertyMetadataOptions.Inherits));
+
+        public static bool GetIsTextMatch(DependencyObject obj)
+        {
+            return (bool)obj.GetValue(IsTextMatchProperty);
+        }
+
+        public static string GetSearchValue(DependencyObject obj)
+        {
+            return (string)obj.GetValue(SearchValueProperty);
+        }
+
+        public static void SetIsTextMatch(DependencyObject obj, bool value)
+        {
+            obj.SetValue(IsTextMatchProperty, value);
+        }
+
+        public static void SetSearchValue(DependencyObject obj, string value)
+        {
+            obj.SetValue(SearchValueProperty, value);
+        }
+    }
+}