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SpatialEdmFunctions.Longitude Method

.NET Framework 4.5

Creates a DbFunctionExpression that invokes the canonical 'Longitude' function with the specified argument, which must have an Edm.Geography result type. 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 Longitude(
	this DbExpression geographyValue
)

Parameters

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

An expression that specifies the geography point value from which the Longitude value should be retrieved.

Return Value

Type: System.Data.Common.CommandTrees.DbFunctionExpression
A new DbFunctionExpression that returns either the Longitude value of geographyValue or null if geographyValue is not a point.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type DbExpression. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

ExceptionCondition
ArgumentNullException

geographyValue

ArgumentException

geographyValue

.NET Framework

Supported in: 4.6, 4.5
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