IdeaBlade DevForce 2010 Help Reference
FirstOrDefault Method
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IdeaBlade.Linq Assembly > IdeaBlade.Linq Namespace > QueryableExtensions Class : FirstOrDefault Method



source
Returns the first element of a sequence, or the default value (usually null) if not found.

Syntax

Visual Basic (Declaration) 
<ExtensionAttribute()>
Public Shared Function FirstOrDefault( _
   ByVal source As IQueryable _
) As Object
Visual Basic (Usage)Copy Code
Dim source As IQueryable
Dim value As Object
 
value = QueryableExtensions.FirstOrDefault(source)
C# 
[ExtensionAttribute()]
public static object FirstOrDefault( 
   IQueryable source
)
C++/CLI 
[ExtensionAttribute()]
public:
static Object^ FirstOrDefault( 
   IQueryable^ source
)

Parameters

source

Requirements

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

See Also

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