Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All

SpatialEdmFunctions.GeometryFromText Method (DbExpression, DbExpression)

.NET Framework 4.6 and 4.5

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.

Namespace:  System.Data.Common.CommandTrees.ExpressionBuilder.Spatial
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static DbFunctionExpression GeometryFromText(
	DbExpression wellKnownText,
	DbExpression coordinateSystemId
)

Parameters

wellKnownText
Type: System.Data.Common.CommandTrees.DbExpression

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

coordinateSystemId
Type: System.Data.Common.CommandTrees.DbExpression

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

Return Value

Type: System.Data.Common.CommandTrees.DbFunctionExpression
A new DbFunctionExpression that returns a new geometry value based on the specified values.

ExceptionCondition
ArgumentNullException

wellKnownTextcoordinateSystemId

ArgumentException

wellKnownTextcoordinateSystemId

.NET Framework

Supported in: 4.6, 4.5
Show:
© 2015 Microsoft