SpatialEdmFunctions.SpatialElementAt(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 'SpatialElementAt' function with the specified arguments. The first argument must have an Edm.Geography or Edm.Geometry result type. The second argument must have an integer numeric result type. The result type of the expression is the same as that of spatialValue.

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

public static System.Data.Common.CommandTrees.DbFunctionExpression SpatialElementAt (this System.Data.Common.CommandTrees.DbExpression spatialValue, System.Data.Common.CommandTrees.DbExpression indexValue);

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

<Extension()>
Public Function SpatialElementAt (spatialValue As DbExpression, indexValue As DbExpression) As DbFunctionExpression

Parameters

spatialValue: DbExpression

An expression that specifies the geography or geometry collection value.

indexValue: DbExpression

An expression that specifies the position of the element to be retrieved from within the geometry or geography collection.

Returns

DbFunctionExpression

A new DbFunctionExpression that returns either the collection element at position indexValue in spatialValue or null if spatialValue is not a collection.

Exceptions

ArgumentNullException

indexValue

ArgumentException

spatialValue indexValue

Applies to