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XPathNavigator.Compile Method

Compiles a string representing an XPath expression and returns an XPathExpression object.

Namespace:  System.Xml.XPath
Assembly:  System.Xml (in System.Xml.dll)

public virtual XPathExpression Compile(
	string xpath
)

Parameters

xpath
Type: System.String

A string representing an XPath expression.

Return Value

Type: System.Xml.XPath.XPathExpression
An XPathExpression object representing the XPath expression.

ExceptionCondition
ArgumentException

The xpath parameter contains an XPath expression that is not valid.

XPathException

The XPath expression is not valid.

An XPath expression is evaluated to yield one of the following return types:

  • Node Set: an unordered collection of nodes without duplicates

  • Boolean: true or false

  • Number: 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.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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