Using Windows.Automation, can I locate an AutomationElement by regex?

问题

I have an object tree that has row objects within a table parent. I'm attempting to put all these rows into an AutomationElementCollection

AutomationElementCollection asdf = ParentTableObj.FindAll
     (
     TreeScope.Children,
     new PropertyCondition
          (
          AutomationElement.NameProperty,
          "I want to use regex here"
          )
     );

All of the rows' AutomationElement.NameProperty contains the string "row". However, they are variations of that string - e.g. "Row1", "Row2", "TopRow", ...

It seems like I may be missing something since the FindAll method allows you to define the TreeScope and find any AutomationElement, which matches the provided Condition parameter. I just want my condition to be unrestricted since I can already control the find scope by TreeScope.

回答1:

//Example :
AutomationElement element = FindFirstDescendant( 
    AutomationElement.FromHandle(windows_hWnd), 
    (ele)=>Regex.IsMatch( ele.Current.Name, pattern)
);

//The generic method to find a descendant element:
public static AutomationElement FindFirstDescendant(AutomationElement element, Func<AutomationElement, bool> condition) {
    var walker = TreeWalker.ControlViewWalker;
    element = walker.GetFirstChild(element);
    while (element != null) {
        if (condition(element))
            return element;
        var subElement = FindFirstDescendant(element, condition);
        if (subElement != null)
            return subElement;
        element = walker.GetNextSibling(element);
    }
    return null;
}

回答2:

As the documentation states, you can ask for a case-insensitive comparison. There is no "regular expression" flag. You will have to do the filtering manually.

来源：https://stackoverflow.com/questions/14884173/using-windows-automation-can-i-locate-an-automationelement-by-regex