C# Selenium C查找除IsElementPresent之外的浏览器上是否存在元素的任何替代方法（By）

我有一个场景，其中有三个不同的html父元素

<tr class="s3288" data-id="s3288">
<tr class="s3288" data-id="s3288">
<tr class="s1" data-id="s1"> 

下面是浏览器的html的外观

<tr class="s1" data-id="s1">
<td class="ftc1">
<td class="ftc2">
<td class="ftc3 valuecol">
<td class="ftc4 headcol">
<ul class="multihead">
<li>
<input class="txtinput chghead headcolfield pholder changit requiref" type="text" placeholder="Enter Column Header Value" validate="{required: true, messages: {required: 'Required'}}" name="th_s1_0_true" value="">
<a class="gylink mapvl" title="No Map Values" href="#">Map Values</a>
</li>
</ul>
</td>
<td class="ftc5 deletecol"> </td>
</tr>
<tr class="s3288" data-id="s3288">
<td class="ftc1">
<td class="ftc2">
<td class="ftc3 valuecol">
<td class="ftc4 headcol">
<ul class="multihead">
<li>
<input class="txtinput chghead headcolfield pholder changit requiref" type="text" placeholder="Enter Column Header Value" validate="{required: true, messages: {required: 'Required'}}" name="th_s3288_0_true" value="">
<a class="gylink mapvl" title="No Map Values" href="#">Map Values</a>
</li>
</ul>
</td>
<td class="ftc5 deletecol"> </td>
</tr>
<tr class="t1" data-id="t1">
<td class="ftc1">
<td class="ftc2">
<td class="ftc3 valuecol">
<td class="ftc4 headcol">
<ul class="multihead">
<li>
<input class="txtinput chghead headcolfield pholder changit requiref" type="text" placeholder="Enter Column Header Value" validate="{required: true, messages: {required: 'Required'}}" name="th_t1_0_true" value="">
</li>
</ul>
</td>
<td class="ftc5 deletecol"> </td>
</tr>

---

问题在于，将某些东西定义为可见或显示并不是一件简单的黑白事情。有许多不同的场景必须满足。不管不工作，意味着什么？在这种情况下，我的函数应该返回true两次，false第三次。但似乎这三次都是真的

protected bool IsElementPresent(By by)
    {
        try
        {
            wait.Until(drv => (drv.FindElement(by)));
            return true;
        }
        catch
        {
            return false;
        }
    }

<tr class="s1" data-id="s1">
<td class="ftc1">
<td class="ftc2">
<td class="ftc3 valuecol">
<td class="ftc4 headcol">
<ul class="multihead">
<li>
<input class="txtinput chghead headcolfield pholder changit requiref" type="text" placeholder="Enter Column Header Value" validate="{required: true, messages: {required: 'Required'}}" name="th_s1_0_true" value="">
<a class="gylink mapvl" title="No Map Values" href="#">Map Values</a>
</li>
</ul>
</td>
<td class="ftc5 deletecol"> </td>
</tr>
<tr class="s3288" data-id="s3288">
<td class="ftc1">
<td class="ftc2">
<td class="ftc3 valuecol">
<td class="ftc4 headcol">
<ul class="multihead">
<li>
<input class="txtinput chghead headcolfield pholder changit requiref" type="text" placeholder="Enter Column Header Value" validate="{required: true, messages: {required: 'Required'}}" name="th_s3288_0_true" value="">
<a class="gylink mapvl" title="No Map Values" href="#">Map Values</a>
</li>
</ul>
</td>
<td class="ftc5 deletecol"> </td>
</tr>
<tr class="t1" data-id="t1">
<td class="ftc1">
<td class="ftc2">
<td class="ftc3 valuecol">
<td class="ftc4 headcol">
<ul class="multihead">
<li>
<input class="txtinput chghead headcolfield pholder changit requiref" type="text" placeholder="Enter Column Header Value" validate="{required: true, messages: {required: 'Required'}}" name="th_t1_0_true" value="">
</li>
</ul>
</td>
<td class="ftc5 deletecol"> </td>
</tr>