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SqlMethods::DateDiffDay Method (Nullable<DateTimeOffset>, Nullable<DateTimeOffset>)

Counts the number of day boundaries between two nullable dates.

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

public:
static Nullable<int> DateDiffDay(
	Nullable<DateTimeOffset> startDate, 
	Nullable<DateTimeOffset> endDate
)

Parameters

startDate
Type: System::Nullable<DateTimeOffset>
The start date for the time period.
endDate
Type: System::Nullable<DateTimeOffset>
The end date for the time period.

Return Value

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

Corresponds to the SQL Server DATEDIFF function; using day 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, 3.5 SP1

.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.

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