SpatialEdmFunctions.Measure Method (DbExpression)

 

Creates a DbFunctionExpression that invokes the canonical 'Measure' function with the specified argument, which must have an Edm.Geography or Edm.Geometry result type. The result type of the expression is Edm.Double.

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

public static DbFunctionExpression Measure(
	this DbExpression spatialValue
)

Parameters

spatialValue
Type: System.Data.Entity.Core.Common.CommandTrees.DbExpression

An expression that specifies the spatial point value from which the Measure (M) co-ordinate value should be retrieved.

Return Value

Type: System.Data.Entity.Core.Common.CommandTrees.DbFunctionExpression

A new DbFunctionExpression that returns either the Measure of spatialValue or null if spatialValue is not a point.