RequiresAnyAttribute Class

public class RequiresAnyAttribute : ClassValidationAttribute

Public Class RequiresAnyAttribute
	Inherits ClassValidationAttribute

Dim instance As RequiresAnyAttribute

public ref class RequiresAnyAttribute : public ClassValidationAttribute

Inheritance

Object    Attribute    ClassValidationAttribute    RequiresAnyAttribute

This is a class validator, which should be applied to the class that defines arguments, not to a specific argument.

Use this attribute if you have multiple arguments, only one of which needs to be supplied at a time.

This attribute is useful when combined with the ProhibitsAttribute attribute. If you have two mutually exclusive attribute, you cannot mark either of them as required. For example, given arguments A and B, if B prohibits A but A is required, then B can never be used.

Instead, you can use the RequiresAnyAttribute attribute to indicate that the user must supply either A or B, and the ProhibitsAttribute attribute to indicate that they cannot supply both at once.

[RequiresAny(nameof(Address), nameof(Path))]
class Arguments
{
    [CommandLineArgument]
    public Uri Address { get; set; }

    [CommandLineArgument]
    [Prohibits(nameof(Address))]
    public string Path { get; set; }
}

The names of the arguments are not validated when the attribute is created. If one of the specified arguments does not exist, it is assumed to have no value.

Reference