DbGeography Class
.NET Framework 4.5
Represents data in a geodetic (round earth) coordinate system.
Namespace: System.Data.Spatial
Assembly: System.Data.Entity (in System.Data.Entity.dll)
The DbGeography type exposes the following members.
| Name | Description | |
|---|---|---|
 | Area | Gets a nullable double value that indicates the area of this DbGeography value, which may be null if this value does not represent a surface. |
| CoordinateSystemId | Gets the identifier associated with the coordinate system. |
| DefaultCoordinateSystemId | Gets the default coordinate system id (SRID) for geography values (WGS 84). |
| Dimension | Gets the dimension of the given DbGeography value or, if the value is a collections, the largest element dimension. |
| ElementCount | Gets the number of elements in this DbGeography value, if it represents a geography collection. <returns>The number of elements in this geography value, if it represents a collection of other geography values; otherwise null.</returns> |
| Elevation | Gets the elevation (Z coordinate) of this DbGeography value, if it represents a point. <returns>The elevation (Z coordinate) value of this geography value, if it represents a point; otherwise null.</returns> |
| EndPoint | Gets a DbGeography value representing the start point of this value, which may be null if this DbGeography value does not represent a curve. |
| IsClosed | Gets a nullable Boolean value indicating whether this DbGeography value is closed, which may be null if this value does not represent a curve. |
| IsEmpty | Gets a nullable Boolean value indicating whether this DbGeography value is empty. |
| Latitude | Gets the Latitude coordinate of this DbGeography value, if it represents a point. <returns>The Latitude coordinate value of this geography value, if it represents a point; otherwise null.</returns> |
| Length | Gets a nullable double value that indicates the length of this DbGeography value, which may be null if this value does not represent a curve. |
| Longitude | Gets the Longitude coordinate of this DbGeography value, if it represents a point. <returns>The Longitude coordinate value of this geography value, if it represents a point; otherwise null.</returns> |
| Measure | Gets the M (Measure) coordinate of this DbGeography value, if it represents a point. <returns>The M (Measure) coordinate value of this geography value, if it represents a point; otherwise null.</returns> |
| PointCount | Gets the number of points in this DbGeography value, if it represents a linestring or linear ring. <returns>The number of elements in this geography value, if it represents a linestring or linear ring; otherwise null.</returns> |
| ProviderValue | Gets a representation of this DbGeography value that is specific to the underlying provider that constructed it. |
| SpatialTypeName | Gets the spatial type name of the DBGeography. |
| StartPoint | Gets a DbGeography value representing the start point of this value, which may be null if this DbGeography value does not represent a curve. |
| WellKnownValue | Gets or sets a data contract serializable well known representation of this DbGeography value. |
| Name | Description | |
|---|---|---|
| AsBinary | Generates the well known binary representation of this DbGeography value. |
| AsGml | Generates the Geography Markup Language (GML) representation of this DbGeography value. |
| AsText | Generates the well known text representation of this DbGeography value. Includes only Longitude and Latitude for points. |
| Buffer | Returns a geography object that represents the union of all points whose distance from a geography instance is less than or equal to a specified value. |
| Difference | Computes the difference of this DbGeography value and another DbGeography value. |
| Disjoint | Determines whether this DbGeography is spatially disjoint from the specified DbGeography argument. |
| Distance | Computes the distance between the closest points in this DbGeography value and another DbGeography value. |
| ElementAt | Returns an element of this DbGeography value from a specific position, if it represents a geography collection. <param name="index">The position within this geography value from which the element should be taken.</param><returns>The element in this geography value at the specified position, if it represents a collection of other geography values; otherwise null.</returns> |
| Equals(Object) | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| FromBinary(Byte[]) | Creates a new DbGeography value based on the specified well known binary value. |
| FromBinary(Byte[], Int32) | Creates a new DbGeography value based on the specified well known binary value and coordinate system identifier (SRID). |
| FromGml(String) | Creates a new DbGeography value based on the specified Geography Markup Language (GML) value. |
| FromGml(String, Int32) | Creates a new DbGeography value based on the specified Geography Markup Language (GML) value and coordinate system identifier (SRID). |
| FromText(String) | Creates a new DbGeography value based on the specified well known text value. |
| FromText(String, Int32) | Creates a new DbGeography value based on the specified well known text value and coordinate system identifier (SRID). |
| GeographyCollectionFromBinary | Creates a new DbGeography collection value based on the specified well known binary value and coordinate system identifier (SRID). |
| GeographyCollectionFromText | Creates a new DbGeography collection value based on the specified well known text value and coordinate system identifier (SRID). |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| Intersection | Computes the intersection of this DbGeography value and another DbGeography value. |
| Intersects | Determines whether this DbGeography value spatially intersects the specified DbGeography argument. |
| LineFromBinary | Creates a new DbGeography line value based on the specified well known binary value and coordinate system identifier (SRID). |
| LineFromText | Creates a new DbGeography line value based on the specified well known text value and coordinate system identifier (SRID). |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| MultiLineFromBinary | Returns the multiline value from a binary value. |
| MultiLineFromText | Returns the multiline value from a well-known text value. |
| MultiPointFromBinary | Returns the multipoint value from a well-known binary value. |
| MultiPointFromText | Returns the multipoint value from a well-known text value. |
| MultiPolygonFromBinary | Returns the multi polygon value from a well-known binary value. |
| MultiPolygonFromText | Returns the multi polygon value from a well-known text value. |
| PointAt | Returns an element of this DbGeography value from a specific position, if it represents a linestring or linear ring. <param name="index">The position within this geography value from which the element should be taken.</param><returns>The element in this geography value at the specified position, if it represents a linestring or linear ring; otherwise null.</returns> |
| PointFromBinary | Creates a new DbGeography point value based on the specified well known binary value and coordinate system identifier (SRID). |
| PointFromText | Creates a new DbGeography point value based on the specified well known text value and coordinate system identifier (SRID). |
| PolygonFromBinary | Creates a new DbGeography polygon value based on the specified well known binary value and coordinate system identifier (SRID). |
| PolygonFromText | Creates a new DbGeography polygon value based on the specified well known text value and coordinate system identifier (SRID). |
| SpatialEquals | Determines whether this DbGeography is spatially equal to the specified DbGeography argument. |
| SymmetricDifference | Computes the symmetric difference of this DbGeography value and another DbGeography value. |
| ToString | Returns a string representation of the geography value. (Overrides Object.ToString().) |
| Union | Computes the union of this DbGeography value and another DbGeography value. |
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.
