.NET Framework Class Library
NameValueCollection.HasKeys Method
Gets a value indicating whether the NameValueCollection contains keys that are not null.
Assembly: System (in System.dll)
Syntax
Visual Basic
Public Function HasKeys As Boolean
C#
public bool HasKeys()
Visual C++
public: bool HasKeys()
F#
member HasKeys : unit -> bool
Return Value
Type: System.Booleantrue if the NameValueCollection contains keys that are not null; otherwise, false.
Remarks
This method is an O(1) operation.
Version Information
.NET Framework
Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0.NET Framework Client Profile
Supported in: 4, 3.5 SP1Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.
See Also