How to indicate an ` ` in xpath?

Question

Say we have the following HTML code. What I want is to locate to the label element whose text is 'AgendaShowCapacity (1 remaining)' with XPath.

<div id="pageContent">
<fieldset>
    <legend>Agenda</legend>
    <ol class='fieldList custom' data-section='0'>
        <li class="checkboxLeft" data-id="467578" data-z="1">           
            <div class="fieldHolder1">
                <input id="467578" type="checkbox" name="467578" />
            </div>
            <div class="fieldHolder2">
                <label for="467578">AgendaShowCapacity&nbsp;(1 remaining)</label>
            </div>
        </li>
        <li class="checkboxLeft" data-id="467579" data-z="2">           
            <div class="fieldHolder1">
                <input id="467579" type="checkbox" name="467579" />
            </div>
            <div class="fieldHolder2">
                <label for="467579">AgendaHideReached</label>
            </div>
        </li>
        <li class="checkboxLeft" data-id="467580" data-z="3">           
            <div class="fieldHolder1">
                <input id="467580" type="checkbox" name="467580" />
            </div>
            <div class="fieldHolder2">
                <label for="467580">AgendaShowMessage</label>
            </div>
        </li>
        <li class="checkboxLeft" data-id="467584" data-z="4">           
            <div class="fieldHolder1">
                <input id="467584" type="checkbox" name="467584" />
            </div>
            <div class="fieldHolder2">
                <label for="467584">AgendaWaitlist</label>
            </div>
        </li>
    </ol>
</fieldset>
<div class="buttonGroup">
    <button type="button" name="ctl00$cph$ctlNavigation$btnAddAnother" class="button" onclick="SubmitForm(this);return false;">Add Another Person</button>
    <span class="textBetweenButtons">or</span>
    <button type="submit" name="ctl00$cph$ctlNavigation$btnContinue" class="button" onclick="SubmitForm(this);return false;">Continue</button>
</div>

And here is the sample C# code using selenium-webdriver to locate that element.

IWebDriver driver = new FirefoxDriver();
// Go to the page containing the html code above
IWebElement element = driver.FindElement(By.XPath("//div[@id='pageContent']//legend/following-sibling::ol/li/div/label[text()='AgendaShowCapacity (1 remaining)']"));
// Do something to that element

But this doesn't work, webdriver tells me that it can't find that element using the xpath I provided. So I assumed there's some tricky points (which I can't figure out) with parentheses in that xpath expression:

//div[@id='pageContent']//legend/following-sibling::ol/li/div/label[text()='AgendaShowCapacity (1 remaining)']

Any ideas would be appreciated!

Edit 2012-10-9
Just like user246 said, the key point is   (I confirmed this once more in the original .aspx page, so I'm quite sure it is an  , NOT a space).
I tried replacing the first blank with an  , so the xpath changes to //label[text()='AgendaShowCapacity (1 remaining)'].
However it still doesn't work.
I edit the HTML for that label element with Firebug, replacing   with a space, i.e. changing <label for="467578">AgendaShowCapacity&nbsp;(1 remaining)</label> to <label for="467578">AgendaShowCapacity (1 remaining)</label>, this time FirePath found it using xpath //label[text()='AgendaShowCapacity (1 remaining)'].
So I think we can come to a conclusion that   is NOT equivalent to a space in xpath.
BTW, I was verifying the xpath with FirePath in Firefox 13.0.1, but I don't think different browser would make any difference since I've also verified in Chrome21 and got the same result.
So this question has turned to 'How to indicate an   in xpath'

Answer 1

Bruce, welcome to SQA. The label in the element in question is AgendaShowCapacity (1 remaining), but the label in your XPath is AgendaShowCapacity (1 remaining). I am not sure a blank and an   are equivalent in an XPath. Have you tried replacing that first blank with an   in your XPath? Another way to rule out the   would be to replace label[text()='AgendaShowCapacity (1 remaining)'] with label[starts-with(text(),'AgendaShowCapacity')].