Windows Dev Center

Collapse the table of content
Expand the table of content
Expand Minimize
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

How to Validate an Argument Set

This example shows how to specify a validation rule that the Windows PowerShell runtime can use to check the parameter argument before the cmdlet is run. This validation rule provides a set of the valid values for the parameter argument.

noteNote
For more information about the class that defines this attribute, see ValidateSetAttribute.

To validate an argument set

  • Add the ValidateSet attribute as shown in the following code. This example specifies a set of three possible values for the UserName parameter.

        [ValidateSet("Steve", "Mary", "Carl", IgnoreCase = true)]
        [Parameter(Position = 0, Mandatory = true)]
        public string UserName
        {
          get { return userName; }
          set { userName = value; }
        }
    
        private string userName;
    

For more information about how to declare this attribute, see ValidateSet Attribute Declaration.

See Also

Community Additions

Show:
© 2015 Microsoft