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SerialPort.DtrEnable Property

Gets or sets a value that enables the Data Terminal Ready (DTR) signal during serial communication.

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

[BrowsableAttribute(true)]
public bool DtrEnable { get; set; }

Property Value

Type: System.Boolean
true to enable Data Terminal Ready (DTR); otherwise, false. The default is false.

ExceptionCondition
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.

Data Terminal Ready (DTR) is typically enabled during XON/XOFF software handshaking and Request to Send/Clear to Send (RTS/CTS) hardware handshaking, and modem communications.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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