.NET Framework (current version)
Gets or sets a value that enables the Data Terminal Ready (DTR) signal during serial communication.
System (in System.dll)
Public Property DtrEnable As Boolean
true to enable Data Terminal Ready (DTR); otherwise, false. The default is false.
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.
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Available since 2.0