添加项目文件。

Wpf.Ui.Extend/Controls/TextBoxEx/TextBoxEx.xaml.cs

@@ -0,0 +1,57 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Wpf.Ui.Extend.Controls
+{
+    public class TextBoxEx : Wpf.Ui.Controls.TextBox
+    {
+        static TextBoxEx()
+        {
+            DefaultStyleKeyProperty.OverrideMetadata(typeof(TextBoxEx), new FrameworkPropertyMetadata(typeof(TextBoxEx)));
+        }
+
+        public string Prefix
+        {
+            get { return (string)GetValue(PrefixProperty); }
+            set { SetValue(PrefixProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for Prefix.  This enables animation, styling, binding, etc...
+        public static readonly DependencyProperty PrefixProperty =
+            DependencyProperty.Register(nameof(Prefix), typeof(string), typeof(TextBoxEx), new PropertyMetadata(null));
+
+
+
+        public string Suffix
+        {
+            get { return (string)GetValue(SuffixProperty); }
+            set { SetValue(SuffixProperty, value); }
+        }
+
+        // Using a DependencyProperty as the backing store for Suffix.  This enables animation, styling, binding, etc...
+        public static readonly DependencyProperty SuffixProperty =
+            DependencyProperty.Register(nameof(Suffix), typeof(string), typeof(TextBoxEx), new PropertyMetadata(null));
+
+
+
+        public string Header
+        {
+            get { return (string)GetValue(HeaderProperty); }
+            set { SetValue(HeaderProperty, value); }
+        }
+
+        public static readonly DependencyProperty HeaderProperty =
+            DependencyProperty.Register(nameof(Header), typeof(string), typeof(TextBoxEx), new PropertyMetadata(null));
+
+
+        public Dock HeaderPlacement
+        {
+            get { return (Dock)GetValue(HeaderPlacementProperty); }
+            set { SetValue(HeaderPlacementProperty, value); }
+        }
+
+        public static readonly DependencyProperty HeaderPlacementProperty =
+            DependencyProperty.Register(nameof(HeaderPlacement), typeof(Dock), typeof(TextBoxEx), new PropertyMetadata(Dock.Top));
+
+    }
+}