Why does this X-path gives an error ???

[apurvaG]

Hi All,

Am getting an error while selecting nodes from my XML document. But if I change the "X-path" expression used it is working fine. Can anyone help me to undestand what is wrong with my X-path?

Following X-path expression is giving error.

xmldom.SelectNodes("//[protype='abc' and proflag='1']")

Above line of code gives following exception in VS2005 [vb.net]
Run-time exception thrown : System.Xml.XPath.XPathException - Expression must evaluate to a node-set.


But if I give the x-path as follows then it is working fine.
xmldom.SelectNodes("//proxml[protype='abc' and proflag='1']")

Can anyone tell why '//[condition]" does not work and "//node[condition]" works ?

Here is the sample XML which I am using.
<proxml>
<protype>abc</protype>
<prouid>demo</prouid>
<proflag>1</proflag>
</proxml>

Thanking you in advace
Apurva G.

[jkmyoung]

It creates an error because you have not specified the node the condition (in brackets) applies to.. Use a * or proxml as shown.

xmldom.SelectNodes("//*[protype='abc' and proflag='1']")

[apurvaG]

It creates an error because you have not specified the node the condition (in brackets) applies to.. Use a * or proxml as shown.

xmldom.SelectNodes("//*[protype='abc' and proflag='1']")

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Thanks jkmyoung for the reply.