SpatialEdmFunctions.Measure(DbExpression) Method

Reference

Definition

Namespace:: System.Data.Common.CommandTrees.ExpressionBuilder.Spatial

Assembly:: System.Data.Entity.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ Measure(System::Data::Common::CommandTrees::DbExpression ^ spatialValue);

public static System.Data.Common.CommandTrees.DbFunctionExpression Measure (this System.Data.Common.CommandTrees.DbExpression spatialValue);

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

<Extension()>
Public Function Measure (spatialValue As DbExpression) As DbFunctionExpression

Parameters

spatialValue: DbExpression

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

Returns

DbFunctionExpression

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

Exceptions

ArgumentNullException

spatialValue

ArgumentException