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<html>
<body>
<table>
<tr>
<th>HeaderA</th>
<th>HeaderB</th>
<th>HeaderC</th>
<th>HeaderD</th>
</tr>
<tr>
<td>ContentA</td>
<td>ContentB</td>
<td>ContentC</td>
<td>ContentD</td>
</tr>
</table>
</body>
</html>
I am looking for the most efficient way to select the content 'td' node based on the heading in the corresponding 'th' node..
My current xPath expression..
/html/body/table/tr/td[count(/html/body/table/tr/th[text() = 'HeaderA']/preceding-sibling::*)+1]
Some questions..
../..) inside count()?td[?] or is count(/preceding-sibling::*)+1 the most efficient?
648
The XPathNavigator class provides the Matches method to determine if a node matches an XPath expression. The Matches method takes an XPath expression as input and returns a Boolean that indicates if the current node matches the given XPath expression or the given compiled XPathExpression object.
node() matches any node (the least specific node test of them all) text() matches text nodes only. comment() matches comment nodes. * matches any element node.
For example if both text fields have //input[@id='something'] then you can edit the first field xpath as (//input[@id='something'])[1] and the second field's xpath as (//input[@id='something'])[2] in object repository.
The syntax for locating elements through XPath- Multiple Attribute can be written as: //<HTML tag>[@attribute_name1='attribute_value1'][@attribute_name2='attribute_value2]
count()
Here is the code with relative xpath-code inside count()
/html/body/table/tr/td[count(../../tr/th[text()='HeaderC']/preceding-sibling::*)+1]
But well, it is not much shorter... It won't be shorter than this in my opinion:
//td[count(../..//th[text()='HeaderC']/preceding-sibling::*)+1]
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