SqlMethods.DateDiffHour Method (Nullable(Of DateTime), Nullable(Of DateTime))

Counts the number of hour boundaries between two nullable dates.

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

Public Shared Function DateDiffHour ( _
	startDate As Nullable(Of DateTime), _
	endDate As Nullable(Of DateTime) _
) As Nullable(Of Integer)


Type: System.Nullable(Of DateTime)
The start date for the time period.
Type: System.Nullable(Of DateTime)
The end date for the time period.

Return Value

Type: System.Nullable(Of Int32)
When both parameters are not Nothing, returns the number of hour boundaries between the two specified dates. When one or both parameters are Nothing, returns a Nothing value.

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

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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