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SqlMethods.DateDiffSecond Method (Nullable<DateTime>, Nullable<DateTime>)

Counts the number of second boundaries between two nullable dates.

Namespace:  System.Data.Linq.SqlClient
Assembly:  System.Data.Linq (in System.Data.Linq.dll)

public static Nullable<int> DateDiffSecond(
	Nullable<DateTime> startDate,
	Nullable<DateTime> endDate
)

Parameters

startDate
Type: System.Nullable<DateTime>

The start date for the time period.

endDate
Type: System.Nullable<DateTime>

The end date for the time period.

Return Value

Type: System.Nullable<Int32>
When both parameters are not null, returns the number of second boundaries between the two specified dates. When one or both parameters are null, returns a null value.

Corresponds to the SQL Server DATEDIFF function; using second to specify the type of time boundary crossed. For more about this SQL Server function, see DATEDIFF in the Microsoft SQL Server Books Online.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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