c# - 当我不知道确切的树层次结构时搜索树项

Question

我正在尝试在编码的 UI 测试中选择一个树项，但我不知道整个层次结构。

例子：

• mssql 连接
  • 表
    • 未知
      • 名

有没有办法在不指定整个路径的情况下搜索此 FirstName 树项并指定它的深度如此之多？

看起来任何搜索配置属性都不会执行此操作。

Answer 1

如果 FirstName 在树中是唯一的，那么您可以使用 PInvoke，并且您不需要指定深度：

    public static List<IntPtr> GetChildWindows(IntPtr parent)
    {
        var result = new List<IntPtr>();
        var listHandle = GCHandle.Alloc(result);
        try
        {
            var childProc = new User32.EnumWindowsProc(EnumWindow);
            User32.EnumChildWindows(parent, childProc, GCHandle.ToIntPtr(listHandle));
        }
        finally
        {
            if (listHandle.IsAllocated)
                listHandle.Free();
        }
        return result;
    }

    private static bool EnumWindow(IntPtr handle, IntPtr pointer)
    {
        var gch = GCHandle.FromIntPtr(pointer);
        var list = gch.Target as List<IntPtr>;
        if (list == null)
        {
            throw new InvalidCastException("GCHandle Target could not be cast as List<IntPtr>");
        }
        list.Add(handle);
        // Modify this to check to see if you want to cancel the operation, then return a null here
        return true;
    }

    public delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool EnumChildWindows(IntPtr window, EnumWindowsProc callback, IntPtr i);

    // sample usage:
    public void findWindowUser32()
    {
        foreach (IntPtr child in GetChildWindows(User32.FindWindow(null, "Untitled - Notepad")))
        {
            StringBuilder sb = new StringBuilder(100);
            User32.GetClassName(child, sb, sb.Capacity);

            if (sb.ToString() == "Edit")
            {
                uint wparam = 0 << 29 | 0;
                User32.PostMessage(child, WindowsConstants.WM_KEYDOWN, (IntPtr)Keys.H, (IntPtr)wparam);
            }
        }
    }

Answer 2

当您的控件映射到 UI 映射中时，可能使用了完整的层次结构，例如

mssql 连接 -Tables --Unknown1 ---FirstName

导致 4 个映射控件。

您可以手动编辑 uimap .xml 文件，小心删除 -Unknown1 元素，并确保关闭 MatchExactHierarchy。这样搜索最初会失败，继续使用启发式方法在树中查找比直接子级更深的元素，并且应该找到您的控件。

Answer 3

  public static UITestControl GetTreeItem(UITestControl TreeControl, string ItemName, bool ContainsTrue = true)
    {
        AutomationElement tree = AutomationElement.FromHandle(TreeControl.WindowHandle);
        System.Windows.Automation.ControlType controlType = tree.Current.ControlType;
        //Get collection of tree nodes.
        AutomationElementCollection treeNodeCollection = null;
        treeNodeCollection = tree.FindAll(TreeScope.Descendants,
                new System.Windows.Automation.PropertyCondition(AutomationElement.ControlTypeProperty,
                        System.Windows.Automation.ControlType.TreeItem));
        UITestControl ReqTreeItem = new UITestControl();
        foreach (AutomationElement item in treeNodeCollection)
        {
            if ((item.Current.Name == ItemName) && (!ContainsTrue))
            {
                ReqTreeItem = UITestControlFactory.FromNativeElement(item, "UIA");
                break;
            }
            if ((item.Current.Name.Contains(ItemName)) && (ContainsTrue))
            {
                ReqTreeItem = UITestControlFactory.FromNativeElement(item, "UIA");
                break;
            }
        }
        return ReqTreeItem;
    }