C# Class SharpMap.Data.Providers.OleDbPoint

The OleDbPoint provider is used for rendering point data from an OleDb compatible datasource.

The data source will need to have two double-type columns, xColumn and yColumn that contains the coordinates of the point, and an integer-type column containing a unique identifier for each row.

To get good performance, make sure you have applied indexes on ID, xColumn and yColumns in your datasource table.

Inheritance: IProvider, IDisposable

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Public Methods

Method	Description
Close ( ) : void	Closes the datasource
Dispose ( ) : void	Disposes the object
ExecuteIntersectionQuery ( SharpMap geom, FeatureDataSet ds ) : void	Throws NotSupportedException.
GetExtents ( ) : SharpMap.Geometries.BoundingBox	Boundingbox of dataset
GetFeature ( uint RowID ) : FeatureDataRow	Returns a datarow based on a RowID
GetFeatureCount ( ) : int	Returns the number of features in the dataset
GetGeometriesInView ( SharpMap bbox ) : List	Returns geometries within the specified bounding box
GetGeometryByID ( uint oid ) : SharpMap.Geometries.Geometry	Returns the geometry corresponding to the Object ID
GetObjectIDsInView ( SharpMap bbox ) : List	Returns geometry Object IDs whose bounding box intersects 'bbox'
GetXYTolerance ( ) : double?
OleDbPoint ( string ConnectionStr, string tablename, string OID_ColumnName, string xColumn, string yColumn ) : System	Initializes a new instance of the OleDbPoint provider
Open ( ) : void	Opens the datasource

Private Methods

Method	Description
Dispose ( bool disposing ) : void

Method Details

Close() public method

Closes the datasource

public Close ( ) : void
return	void

Dispose() public method

Disposes the object

public Dispose ( ) : void
return	void

ExecuteIntersectionQuery() public method

Throws NotSupportedException.

public ExecuteIntersectionQuery ( SharpMap geom, FeatureDataSet ds ) : void
geom	SharpMap
ds	FeatureDataSet	FeatureDataSet to fill data into
return	void

GetExtents() public method

Boundingbox of dataset

public GetExtents ( ) : SharpMap.Geometries.BoundingBox
return	SharpMap.Geometries.BoundingBox

GetFeature() public method

Returns a datarow based on a RowID

public GetFeature ( uint RowID ) : FeatureDataRow
RowID	uint
return	FeatureDataRow

GetFeatureCount() public method

Returns the number of features in the dataset

public GetFeatureCount ( ) : int
return	int

GetGeometriesInView() public method

Returns geometries within the specified bounding box

public GetGeometriesInView ( SharpMap bbox ) : List
bbox	SharpMap
return	List

GetGeometryByID() public method

Returns the geometry corresponding to the Object ID

public GetGeometryByID ( uint oid ) : SharpMap.Geometries.Geometry
oid	uint	Object ID
return	SharpMap.Geometries.Geometry

GetObjectIDsInView() public method

Returns geometry Object IDs whose bounding box intersects 'bbox'

public GetObjectIDsInView ( SharpMap bbox ) : List
bbox	SharpMap
return	List

GetXYTolerance() public method

public GetXYTolerance ( ) : double?
return	double?

OleDbPoint() public method

Initializes a new instance of the OleDbPoint provider

public OleDbPoint ( string ConnectionStr, string tablename, string OID_ColumnName, string xColumn, string yColumn ) : System
ConnectionStr	string
tablename	string
OID_ColumnName	string
xColumn	string
yColumn	string
return	System

Open() public method

Opens the datasource

public Open ( ) : void
return	void