AddNamespaceDeclaration
Description
Adds a new namespace declaration to this PBDOM_ELEMENT object. The
new namespace can apply to the PBDOM_ELEMENT object itself if the
namespace becomes the default namespace in the PBDOM_ELEMENT
object.
Syntax
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1 |
pbdom_element_name.AddNamespaceDeclaration(string strNamespacePrefix, string strNamespaceUri) |
|
Argument |
Description |
|---|---|
|
pbdom_element_name |
The name of a PBDOM_ELEMENT object |
|
strNamespacePrefix |
The prefix of the new namespace to be |
|
strNamespaceUri |
The URI of the new namespace to be |
Return value
PBDOM_ELEMENT. The modified PBDOM_ELEMENT object.
Throws
EXCEPTION_INVALID_ARGUMENT — If any of the input parameters is
invalid (null).
EXCEPTION_INVALID_NAME — If the input Prefix is invalid, as, for
example, if it contains a colon.
EXCEPTION_INVALID_STRING — If the input URI is invalid.
EXCEPTION_MEMORY_ALLOCATION_FAILURE — If memory allocation
failure occurred in this method.
Examples
Consider the following element:
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<Vehicle> <seats>4</seats> <color>Red</color> <engine> <capacity units="cc">1600</capacity> </engine> </Vehicle> |
Given a PBDOM_ELEMENT object elem_vehicle that represents the
Vehicle element, consider the following statement:
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elem_vehicle.AddNamespaceDeclaration("vehicle_specs",& "http://www.vehicle.com/specs") |
It transforms the Vehicle element as follows:
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<Vehicle xmlns:vehicle_specs="http://www.vehicle.com/specs"> <seats>4</seats> <color>Red</color> <engine> <capacity units="cc">1600</capacity> </engine> </Vehicle> |
Vehicle, seats, color, engine, and capacity are all unqualified
(that is, they have no namespace prefix). Therefore, the vehicle_specs
namespace does not apply to any of them or their attributes or
subelements.
However, consider the following statement:
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1 2 |
elem_vehicle.AddNamespaceDeclaration("", & "http://www.vehicle.com/specs") |
It transforms the Vehicle element as follows:
|
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<Vehicle xmlns:"http://www.vehicle.com/specs"> <seats>4</seats> <color>Red</color> <engine> <capacity units="cc">1600</capacity> </engine> </Vehicle> |
http://www.vehicle.com/specs is the default namespace and so
Vehicle, seats, color, engine, and capacity are all part of this
namespace. Note that the default namespace does not apply to the units
attribute.
See also