SpatialEdmFunctions.SpatialElementAt Method (DbExpression, DbExpression)
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.
Assembly: EntityFramework (in EntityFramework.dll)
public static DbFunctionExpression SpatialElementAt( this DbExpression spatialValue, DbExpression indexValue )
Parameters
- spatialValue
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that specifies the geography or geometry collection value.
- indexValue
-
Type:
System.Data.Entity.Core.Common.CommandTrees.DbExpression
An expression that specifies the position of the element to be retrieved from within the geometry or geography collection.
Return Value
Type: System.Data.Entity.Core.Common.CommandTrees.DbFunctionExpressionA new DbFunctionExpression that returns either the collection element at position indexValue in spatialValue or null if spatialValue is not a collection.