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SerialPort.RtsEnable Property

Gets or sets a value indicating whether the Request to Send (RTS) signal is enabled during serial communication.

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

public bool RtsEnable { get; set; }

Property Value

Type: System.Boolean
true to enable Request to Transmit (RTS); otherwise, false. The default is false.


The value of the RtsEnable property was set or retrieved while the Handshake property is set to the RequestToSend value or the RequestToSendXOnXOff value.


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.

The Request to Transmit (RTS) signal is typically used in Request to Send/Clear to Send (RTS/CTS) hardware handshaking.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0