上传代码

头罩视野slove/头罩视野/Common/NavigationHelper.cs

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+using System.Collections.Generic;
+using System.Windows.Controls;
+
+public static class NavigationHelper
+{
+    public static Frame MainFrame { get; set; }
+    private static Stack<Page> _history = new Stack<Page>();
+
+    // 跳转页面
+    public static void NavigateTo(Page page)
+    {
+        if (MainFrame.Content != null)
+            _history.Push( MainFrame.Content as Page);
+
+        MainFrame.Content = page;
+    }
+
+    // 返回上一页
+    public static void GoBack()
+
+    {
+        System.Diagnostics.Debug.WriteLine("页面加载了！55555");
+        if (_history.Count > 0)
+        {
+            System.Diagnostics.Debug.WriteLine("页面加载了！4444");
+            MainFrame.Content = _history.Pop();
+        }
+          
+    }
+}