C# Класс 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.

Наследование: IProvider, IDisposable

Показать файл Открыть проект Примеры использования класса

Открытые методы

Метод	Описание
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

Приватные методы

Метод	Описание
Dispose ( bool disposing ) : void

Описание методов

Close() публичный Метод

Closes the datasource

public Close ( ) : void
Результат	void

Dispose() публичный Метод

Disposes the object

public Dispose ( ) : void
Результат	void

ExecuteIntersectionQuery() публичный Метод

Throws NotSupportedException.

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

GetExtents() публичный Метод

Boundingbox of dataset

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

GetFeature() публичный Метод

Returns a datarow based on a RowID

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

GetFeatureCount() публичный Метод

Returns the number of features in the dataset

public GetFeatureCount ( ) : int
Результат	int

GetGeometriesInView() публичный Метод

Returns geometries within the specified bounding box

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

GetGeometryByID() публичный Метод

Returns the geometry corresponding to the Object ID

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

GetObjectIDsInView() публичный Метод

Returns geometry Object IDs whose bounding box intersects 'bbox'

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

GetXYTolerance() публичный Метод

public GetXYTolerance ( ) : double?
Результат	double?

OleDbPoint() публичный Метод

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
Результат	System

Open() публичный Метод

Opens the datasource

public Open ( ) : void
Результат	void