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SerialPort.CtsHolding Property

Note: This property is new in the .NET Framework version 2.0.

Gets the state of the Clear-to-Send line.

Namespace: System.IO.Ports
Assembly: System (in system.dll)

public bool CtsHolding { get; }
/** @property */
public boolean get_CtsHolding ()

public function get CtsHolding () : boolean

Property Value

true if the Clear-to-Send line is detected; otherwise, false.

Exception typeCondition

IOException

The port is in an invalid state.

- or -

An attempt to set the state of the underlying port failed. For example, the parameters passed from this SerialPort object were invalid.

InvalidOperationException

The stream is closed. This can occur because the Open method has not been called or the Close method has been called.

The Clear-to-Send (CTS) line is used in Request to Send/Clear to Send (RTS/CTS) hardware handshaking. The CTS line is queried by a port before data is sent.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0

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