SqlFunctions.DateDiff Method (String, Nullable<DateTime>, Nullable<TimeSpan>)

.NET Framework (current version)
 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Returns the count of the specified datepart boundaries crossed between the specified start date and end date.

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

[EdmFunctionAttribute("SqlServer", "DATEDIFF")]
public static Nullable<int> DateDiff(
	string datePartArg,
	Nullable<DateTime> startDate,
	Nullable<TimeSpan> endDate
)

Parameters

datePartArg
Type: System.String

The part of the date to calculate the differing number of time intervals.

startDate
Type: System.Nullable<DateTime>

The first date.

endDate
Type: System.Nullable<TimeSpan>

The second date.

Return Value

Type: System.Nullable<Int32>

The number of time intervals between the two dates.

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. For information about the corresponding SQL Server function, see DATEDIFF (Transact-SQL).

.NET Framework
Available since 4.0
Return to top
Show: