SpatialEdmFunctions.GeometryFromText Method

Definition

Namespace:

System.Data.Common.CommandTrees.ExpressionBuilder.Spatial

Assembly:

System.Data.Entity.dll

Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function.

Overloads

GeometryFromText(DbExpression)	Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Geometry. Its value has the default coordinate system id (SRID) of the underlying provider.
GeometryFromText(DbExpression, DbExpression)	Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' 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.Geometry.

GeometryFromText(DbExpression)

Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Geometry. Its value has the default coordinate system id (SRID) of the underlying provider.

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeometryFromText(System::Data::Common::CommandTrees::DbExpression ^ wellKnownText);

public static System.Data.Common.CommandTrees.DbFunctionExpression GeometryFromText (System.Data.Common.CommandTrees.DbExpression wellKnownText);

static member GeometryFromText : System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression

Public Function GeometryFromText (wellKnownText As DbExpression) As DbFunctionExpression

Parameters

wellKnownText

DbExpression

An expression that provides the well known text representation of the geometry value.

Returns

DbFunctionExpression

A new DbFunctionExpression that returns a new geometry value based on the specified value.

Exceptions

ArgumentNullException

wellKnownText

ArgumentException

wellKnownText

GeometryFromText(DbExpression, DbExpression)

Creates a DbFunctionExpression that invokes the canonical 'GeometryFromText' 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.Geometry.

public:
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ GeometryFromText(System::Data::Common::CommandTrees::DbExpression ^ wellKnownText, System::Data::Common::CommandTrees::DbExpression ^ coordinateSystemId);

public static System.Data.Common.CommandTrees.DbFunctionExpression GeometryFromText (System.Data.Common.CommandTrees.DbExpression wellKnownText, System.Data.Common.CommandTrees.DbExpression coordinateSystemId);

static member GeometryFromText : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression

Public Function GeometryFromText (wellKnownText As DbExpression, coordinateSystemId As DbExpression) As DbFunctionExpression

Parameters

wellKnownText

DbExpression

An expression that provides the well known text representation of the geometry value.

coordinateSystemId

DbExpression

An expression that provides the coordinate system id (SRID) of the geometry value's coordinate system.

Returns

DbFunctionExpression

A new DbFunctionExpression that returns a new geometry value based on the specified values.

Exceptions

ArgumentNullException

wellKnownText coordinateSystemId

ArgumentException

wellKnownText coordinateSystemId