订单分类显示 快递金额明细统计， 快递在线充值 等

29WxOrderWpf/UserControls/UcWaterMarkTextBox.xaml.cs

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+using NaiBa.Util.Extension;
+using System;
+using System.Collections.Generic;
+using System.Drawing.Drawing2D;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using static System.Net.Mime.MediaTypeNames;
+
+namespace _29WxOrderWpf.UserControls
+{
+    /// <summary>
+    /// UcWaterMarkTextBox.xaml 的交互逻辑
+    /// </summary>
+    public partial class UcWaterMarkTextBox : UserControl
+    {
+        public event Action<object, TextChangedEventArgs> TextChanged;
+
+        public UcWaterMarkTextBox()
+        {
+            InitializeComponent();
+            DataContext = this;
+            //this.txt.TextChanged
+        }
+
+        public static readonly DependencyProperty TextProperty = DependencyProperty.Register("Text", typeof(string), typeof(UcWaterMarkTextBox), null);
+        public string Text
+        {
+            get { return (string)GetValue(TextProperty) == null ? "" : (string)GetValue(TextProperty); }
+            set { SetValue(TextProperty, value); }
+        }
+
+        public static readonly DependencyProperty WaterMarkProperty = DependencyProperty.Register("WaterMark", typeof(string), typeof(UcWaterMarkTextBox), null);
+        public string WaterMark
+        {
+            get { return (string)GetValue(WaterMarkProperty) == null ? "" : (string)GetValue(WaterMarkProperty); }
+            set { SetValue(WaterMarkProperty, value); }
+        }
+
+        public static readonly DependencyProperty TextWrappingProperty = DependencyProperty.Register("TextWrapping", typeof(TextWrapping), typeof(UcWaterMarkTextBox), null);
+        public TextWrapping TextWrapping
+        {
+            get { return (TextWrapping)GetValue(TextWrappingProperty); }
+            set { SetValue(TextWrappingProperty, value); }
+        }
+
+        private void txt_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            this.Text = txt.Text;
+            TextChanged?.Invoke(this, e);
+        }
+    }
+
+    public class WaterMarkVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value.ParseToString().IsNullOrEmpty() ? Visibility.Visible : Visibility.Collapsed;
+        }
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException(); // 单向绑定可不实现
+        }
+    }
+}