public string? LongArgumentNamePrefix { get; set; }Public Property LongArgumentNamePrefix As String
	Get
	Set
Dim instance As ParseOptions
Dim value As String
value = instance.LongArgumentNamePrefix
instance.LongArgumentNamePrefix = valuepublic:
property String^ LongArgumentNamePrefix {
	String^ get ();
	void set (String^ value);
}This property is only used if the if the parsing mode is set to LongShort, either using the Mode property or the ParseOptionsAttribute attribute
Use the ArgumentNamePrefixes to specify the prefixes for short argument names.
If not , this property overrides the value of the LongArgumentNamePrefix property.