XPathNavigator.Compile(String) Method
Definition
Important
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Compiles a string representing an XPath expression and returns an XPathExpression object.
public:
virtual System::Xml::XPath::XPathExpression ^ Compile(System::String ^ xpath);public virtual System.Xml.XPath.XPathExpression Compile (string xpath);abstract member Compile : string -> System.Xml.XPath.XPathExpression
override this.Compile : string -> System.Xml.XPath.XPathExpressionPublic Overridable Function Compile (xpath As String) As XPathExpressionParameters
- xpath
- String
A string representing an XPath expression.
Returns
An XPathExpression object representing the XPath expression.
Exceptions
The xpath parameter contains an XPath expression that is not valid.
The XPath expression is not valid.
Remarks
An XPath expression is evaluated to yield one of the following return types:
Node Set: an unordered collection of nodes without duplicates
Boolean:
trueorfalseNumber: a floating-point number
String: a sequence of UCS characters
Expressions that return a node set can be used in the Select and Evaluate methods. Expressions that return a Boolean, number, or string can be used in the Evaluate method. The rules on valid expressions for the Matches method are specific to that method.
Applies to
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