Gets the value from the XML node's child elements, returning the default value of if the value doesn't exist.

Namespace: DotNetNuke.Collections
Assembly: DotNetNuke (in DotNetNuke.dll)

Syntax

C#
public static T GetValueOrDefault<T>(
	this IXPathNavigable node,
	string key
)
Visual Basic
<ExtensionAttribute> 
Public Shared Function GetValueOrDefault(Of T) ( 
	node As IXPathNavigable,
	key As String
) As T

Parameters

node
Type: System.Xml.XPath..::..IXPathNavigable
An XML node which containers other elements.
key
Type: System..::..String
The name of the element from which to get the value.

Type Parameters

T
The type of the value to retrieve

Return Value

A T instance.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IXPathNavigable. When you use instance method syntax to call this method, omit the first parameter. For more information, see [b8020aae-374d-46a9-bcb7-8cc2390b93b6] or [175ce3ff-9bbf-4e64-8421-faeb81a0bb51].

Exceptions

ExceptionCondition
System..::..InvalidCastException the value is null and T is a value type, or the value does not implement the IConvertible interface and no cast is defined from the value to T
System..::..ArgumentNullExceptionnode is null

See Also