SerialPort.DtrEnable Property


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

 property bool DtrEnable { bool get(); void set(bool value); };
public bool DtrEnable { get; set; }
public bool DtrEnable { get; set; }
member this.DtrEnable : bool with get, set
Public Property DtrEnable As Boolean

Property Value

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



The port is in an invalid state.


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.

Applies to