SqlSpatialFunctions Class
.NET Framework 4.5
Represents the SQL spatial functions for the SQL client.
Namespace: System.Data.Objects.SqlClient
Assembly: System.Data.Entity (in System.Data.Entity.dll)
The SqlSpatialFunctions type exposes the following members.
| Name | Description | |
|---|---|---|
.gif?cs-save-lang=1&cs-lang=cpp "Public method") .gif?cs-save-lang=1&cs-lang=cpp "Static member") | AsTextZM(DbGeography) | Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a geography instance augmented with any Z (elevation) and M (measure) values carried by the instance. |
| AsTextZM(DbGeometry) | Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a geography instance augmented with any Z (elevation) and M (measure) values carried by the instance. |
| BufferWithTolerance(DbGeography, Nullable<Double>, Nullable<Double>, Nullable<Boolean>) | Returns a geometric object representing the union of all point values whose distance from a geography instance is less than or equal to a specified value, allowing for a specified tolerance. |
| BufferWithTolerance(DbGeometry, Nullable<Double>, Nullable<Double>, Nullable<Boolean>) | Returns a geometric object representing the union of all point values whose distance from a geometry instance is less than or equal to a specified value, allowing for a specified tolerance. |
| EnvelopeAngle | Returns the maximum angle between the point returned by EnvelopeCenter() and a point in the geography instance in degrees. |
| EnvelopeCenter | Returns a point that can be used as the center of a bounding circle for the geography instance. |
| Filter(DbGeography, DbGeography) | Offers a fast, index-only intersection method to determine if a geography instance intersects another SqlGeography instance, assuming an index is available. |
| Filter(DbGeometry, DbGeometry) | Offers a fast, index-only intersection method to determine if a geography instance intersects another SqlGeometry instance, assuming an index is available. |
| InstanceOf(DbGeography, String) | Tests if the SqlGeography instance is the same as the specified type. |
| InstanceOf(DbGeometry, String) | Tests if the SqlGeometry instance is the same as the specified type. |
| MakeValid | Converts an invalid geometry instance into a geometry instance with a valid Open Geospatial Consortium (OGC) type. |
| NumRings | Returns the total number of rings in a Polygon instance. |
| PointGeography | Constructs a geography instance representing a Point instance from its x and y values and a spatial reference ID (SRID). |
| PointGeometry | Constructs a geometry instance representing a Point instance from its x and y values and a spatial reference ID (SRID). |
| Reduce(DbGeography, Nullable<Double>) | Returns an approximation of the given geography instance produced by running the Douglas-Peucker algorithm on the instance with the given tolerance. |
| Reduce(DbGeometry, Nullable<Double>) | Returns an approximation of the given geography instance produced by running the Douglas-Peucker algorithm on the instance with the given tolerance. |
| RingN | Returns the specified ring of the SqlGeography instance: 1 ≤ n ≤ NumRings(). |
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
