SpatialEdmFunctions.Distance Method (DbExpression, DbExpression)

.NET Framework (current version)
 

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.

Namespace:   System.Data.Common.CommandTrees.ExpressionBuilder.Spatial
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static DbFunctionExpression Distance(
	this DbExpression spatialValue1,
	DbExpression spatialValue2
)

Parameters

spatialValue1
Type: System.Data.Common.CommandTrees.DbExpression

An expression that specifies the first spatial value.

spatialValue2
Type: System.Data.Common.CommandTrees.DbExpression

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

Return Value

Type: System.Data.Common.CommandTrees.DbFunctionExpression

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

Exception Condition
ArgumentNullException

spatialValue1spatialValue2

ArgumentException

spatialValue1spatialValue2

.NET Framework
Available since 4.5
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