SpatialEdmFunctions.GeographyFromText Method
Creates a DbFunctionExpression that invokes the canonical 'GeographyFromText' function.
Assembly: EntityFramework (in EntityFramework.dll)
Name | Description | |
---|---|---|
![]() ![]() | GeographyFromText(DbExpression) | Creates a DbFunctionExpression that invokes the canonical 'GeographyFromText' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Geography. Its value has the default coordinate system id (SRID) of the underlying provider. |
![]() ![]() | GeographyFromText(DbExpression, DbExpression) | Creates a DbFunctionExpression that invokes the canonical 'GeographyFromText' function with the specified arguments. wellKnownText must have a string result type, while coordinateSystemId must have an integer numeric result type. The result type of the expression is Edm.Geography. |
SpatialEdmFunctions.GeographyFromText Method (DbExpression)
Creates a DbFunctionExpression that invokes the canonical 'GeographyFromText' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Geography. Its value has the default coordinate system id (SRID) of the underlying provider.
Parameters
- wellKnownText
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that provides the well known text representation of the geography value.
Return Value
Type: System.Data.Entity.Core.Common.CommandTrees.DbFunctionExpressionA new DbFunctionExpression that returns a new geography value based on the specified value.
SpatialEdmFunctions.GeographyFromText Method (DbExpression, DbExpression)
Creates a DbFunctionExpression that invokes the canonical 'GeographyFromText' function with the specified arguments. wellKnownText must have a string result type, while coordinateSystemId must have an integer numeric result type. The result type of the expression is Edm.Geography.
public static DbFunctionExpression GeographyFromText( DbExpression wellKnownText, DbExpression coordinateSystemId )
Parameters
- wellKnownText
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that provides the well known text representation of the geography value.
- coordinateSystemId
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that provides the coordinate system id (SRID) of the geography value's coordinate system.
Return Value
Type: System.Data.Entity.Core.Common.CommandTrees.DbFunctionExpressionA new DbFunctionExpression that returns a new geography value based on the specified values.