SpatialEdmFunctions.Distance(DbExpression, 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 'Distance' function with the specified arguments, which must each have an Edm.Geography or Edm.Geometry result type. The result type of spatialValue1 must match the result type of spatialValue2. The result type of the expression is Edm.Double.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ Distance(System::Data::Common::CommandTrees::DbExpression ^ spatialValue1, System::Data::Common::CommandTrees::DbExpression ^ spatialValue2);

public static System.Data.Common.CommandTrees.DbFunctionExpression Distance (this System.Data.Common.CommandTrees.DbExpression spatialValue1, System.Data.Common.CommandTrees.DbExpression spatialValue2);

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

<Extension()>
Public Function Distance (spatialValue1 As DbExpression, spatialValue2 As DbExpression) As DbFunctionExpression

Parameters

spatialValue1: DbExpression

An expression that specifies the first spatial value.

spatialValue2: DbExpression

An expression that specifies the spatial value from which the distance from spatialValue1 should be measured.

Returns

DbFunctionExpression

A new DbFunctionExpression that returns the distance between the closest points in spatialValue1 and spatialValue1.

Exceptions

ArgumentNullException

spatialValue1 spatialValue2

ArgumentException