C＃量角器-在另一个元素中查找元素

我正在用HTML来测试AngularJS应用，该应用看起来像这样：

<div class="ng-scope" ng-repeat="something in section.questions">
...
</div>
<div class="ng-scope" ng-repeat="something in section.questions">
...
</div>
<div class="ng-scope" ng-repeat="something in section.questions">
            <div ng-switch="something.visible">
                <div id="Ins_Othersumarea" class="content-detail-wrap ng-scope ng-isolate-scope" ng-switch-when="true" highlight="something.code == global.highlightedQuestionCode" highlightedcode="global.highlightedQuestionCode" ng-dblclick="logObject(something)">                         
                    <div ng-class="{divider: showDivider(section, $index)}">                                                                                     
                        <div ng-switch="something.type" class="content-detail-section">                                                                 
                            <div class="ng-scope" ng-switch-when="TRIGGER_YES">
                                <ng-include class="ng-scope" src="getFragment('yes-no-fragment.html')" ng-if="!global.interview.isGroup" ng-init="baseQuestion = something">
                             <div class="row ng-scope">
                                 <div class="col-sm-6" ng-switch="baseQuestion.answerValue == undefined &amp;&amp; !global.readonly">
                                     <div class="content-detail-right ng-scope" ng-switch-when="true">
                                         <div class="row">
                                             <div class="col-xs-6">
                                                 <button type="button" id="yes_Ins_Other  sum area" class="btn-base-question-triggers ng-binding" ng-click="answerbaseQuestion(baseQuestion, true)" tabindex="1" setfocus="Ins_Other  sum area">Yes</button>
                                             </div>
                                             <div class="col-xs-6">
                                                 <button type="button" id="no_Ins_Other  sum area" class="btn-base-question-triggers ng-binding" ng-click="answerbaseQuestion(baseQuestion, false)" tabindex="1">No </button>
                                             </div>
                                         </div>
                                     </div>
                                 </div>
                             </div>
...

我正在尝试根据中继器Div文本内容查找嵌套的Yes / No按钮。

我可以通过以下方式找到正确的ng-repeat元素：

var repeatElement = NgDriver.FindElements(NgBy.Repeater("something in section.questions")).First(x => x.Text.Contains("Some Text"));

但是，我无法找到一种方法来抓住适当的“是/否”按钮。

我试过了 -

repeatElement.FindElement(By.XPath("//button[contains(.,'Yes')]"))

但这会返回页面上的第一个“是”按钮（而不是像我期望的那样在ng-rep Div内）。

1. 为什么？？
2. 我该如何完成我想做的事情？