Adds a new role to the data source for the configured applicationName.
Assembly: System.Web.ApplicationServices (in System.Web.ApplicationServices.dll)
If the specified role name already exists for the configured applicationName, is a null reference (Nothing in Visual Basic), or is an empty string, we recommend that your provider throw an exception.
If the specified role name contains a comma, we recommend that your provider throw an exception.
If your data source restricts the length of the role name, for example, through a fixed-length column of a table in a database, we recommend that you throw an exception if the role name exceeds the maximum length allowed by the data source.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.