SpatialEdmFunctions.SpatialLength(DbExpression) Method

Reference

Definition

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

Assembly:: System.Data.Entity.dll

Important

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Creates a DbFunctionExpression that invokes the canonical 'SpatialLength' 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 ^ SpatialLength(System::Data::Common::CommandTrees::DbExpression ^ spatialValue);

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

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

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

Parameters

spatialValue: DbExpression

An expression that specifies the spatial curve value from which the length should be retrieved.

Returns

DbFunctionExpression

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

Exceptions

ArgumentNullException

spatialValue

ArgumentException