IPointFeatureSourceBeginQuery Method | |
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Begins a query for all features from a data source.
Namespace:
Telogis.GeoBase.DataSources
Assembly:
geobase.net (in geobase.net.dll) Version: 4.99.0.0
Syntax IAsyncResult BeginQuery(
BoundingBox queryBounds,
AsyncCallback callback,
Object state
)
Function BeginQuery (
queryBounds As BoundingBox,
callback As AsyncCallback,
state As Object
) As IAsyncResult
Parameters
- queryBounds
- Type: Telogis.GeoBaseBoundingBox
The BoundingBox representing the area within which to query. - callback
- Type: SystemAsyncCallback
Method to call when the search is complete. - state
- Type: SystemObject
The state of the asynchronous search.
Return Value
Type:
IAsyncResultAn IAsyncResult that will be passed by the caller to EndQuery.
Remarks
IPointFeatureSource objects are not expected to implement caching.
The caller should not call BeginQuery at a rate more frequent than the refresh rate.
See Also