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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)]
[MonitoringDescriptionAttribute("DtrEnable")]
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: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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