SeekableXPathNavigator.CurrentPosition Property
Definition
Important
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When overridden in a derived class, gets or sets a value associated with the node in the data where the XPath navigator is positioned.
public:
abstract property long CurrentPosition { long get(); void set(long value); };public abstract long CurrentPosition { get; set; }member this.CurrentPosition : int64 with get, setPublic MustOverride Property CurrentPosition As LongProperty Value
A value that is associated with the navigator's current position.
Remarks
The set operation moves the navigator to the position associated with the value specified. The get operation returns a value associated with the current position of the navigator.
Notes to Implementers
This property does not have any intrinsic meaning: it is an opaque Int64 value that an implementation associates with the navigator's current position. No restrictions or requirements are placed on the value itself. No assumptions about its internal data structure can be made.
It is not required that the values be sequential, or even that a navigator position map to a unique value. Multiple values can refer to the same navigator position, so comparing two values does not provide useful information.
Any value supplied by a get operation must be valid for a set operation. It is not necessarily an error for a set operation to use a value not first acquired by a get operation. A value not returned by CurrentPosition that has been acquired some other way may or may not be considered valid by the implementation: this choice is up to the implementer.
The meaning of a value must not change during the life of its navigator while it navigates the same document. Also, the meaning of values must be shared by any two navigators that are related by cloning, again, provided they still navigate the same document. All values supplied by a get operation must remain valid for the life of a navigator and any of its clones as long as the instance still navigates the same document.
