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SerialPort.DiscardNull Property

Gets or sets a value indicating whether null bytes are ignored when transmitted between the port and the receive buffer.

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

[BrowsableAttribute(true)]
[MonitoringDescriptionAttribute("DiscardNull")]
public bool DiscardNull { get; set; }

Property Value

Type: System.Boolean
true if null bytes are ignored; 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.

InvalidOperationException

The stream is closed. This can occur because the Open method has not been called or the Close method has been called.

This value should normally be set to false, especially for binary transmissions. Setting this property to true can cause unexpected results for UTF32- and UTF16-encoded bytes.

.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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