修改了设备列表的界面

DMS.WPF/Converters/CountToVisibilityConverter.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace DMS.WPF.Converters
+{
+    /// <summary>
+    /// 计数到可见性转换器。当集合为空时，返回Visible，否则返回Collapsed。
+    /// </summary>
+    public class CountToVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is ICollection collection)
+            {
+                return collection.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
+            }
+
+            return Visibility.Visible;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}