March 2002
Intermediate to advanced
864 pages
31h 8m
English
Missing
Because C# (as well as some other languages) does not allow optional
parameters, Missing allows
those languages to pass this value to indicate that a value will
not be specified for those optional parameters. The only way to
access an instance of this class — there can only be one — is by the
return value of the static field, called
Value.
public sealed class Missing { // Public Static Fields public static readonly field Missing Value; // =System.Reflection.Missing }