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EntityFunctions.DiffYears Method (Nullable<DateTime>, Nullable<DateTime>)

Invokes the canonical DiffYears function. For information about the canonical DiffYears function, see Date and Time Canonical Functions (Entity SQL).

Namespace:  System.Data.Objects
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

[EdmFunctionAttribute("Edm", "DiffYears")]
public static Nullable<int> DiffYears(
	Nullable<DateTime> dateValue1,
	Nullable<DateTime> dateValue2


Type: System.Nullable<DateTime>
A valid date.
Type: System.Nullable<DateTime>
A valid date.

Return Value

Type: System.Nullable<Int32>
The number of years between dateValue1 and dateValue2.

You cannot call this function directly. This function can only appear within a LINQ to Entities query.

This function is translated to a corresponding function in the database.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.