XPathNavigator.LookupNamespace(String) Method
Definition
Important
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Gets the namespace URI for the specified prefix.
public:
virtual System::String ^ LookupNamespace(System::String ^ prefix);
public virtual string? LookupNamespace (string prefix);
public virtual string LookupNamespace (string prefix);
abstract member LookupNamespace : string -> string
override this.LookupNamespace : string -> string
Public Overridable Function LookupNamespace (prefix As String) As String
Parameters
- prefix
- String
The prefix whose namespace URI you want to resolve. To match the default namespace, pass Empty.
Returns
A String that contains the namespace URI assigned to the namespace prefix specified; null
if no namespace URI is assigned to the prefix specified. The String returned is atomized.
Implements
Examples
For an example of the LookupNamespace method, see the InsertElementAfter or InsertElementBefore methods.
Remarks
If String.Empty is specified as the prefix
parameter, the currently assigned default namespace URI is returned. If no default namespace URI is explicitly assigned, and String.Empty is specified as the prefix
parameter, the blank prefix is associated with elements that are not in any namespace, and String.Empty is returned.
Note
The prefix to namespace URI mappings can change from node to node in an XML document. As a result, the value of the LookupNamespace method may not be consistent from one node to the next.