Using nested static classes

[Arjay]

I'm wondering if any of you use static nested classes? Any opinions or drawbacks?

Here's an example...

public class Constants
{
	internal static class DB
	{
		public static class Params
		{
			public const string Address1 = "Address1";
			public const string City = "City";

			public class Scheduler
			{
				public const string Active = "Active";
				public const string DepartmentID = "DepartmentID";
			}
		}

		public static class Sprocs
		{
			public static class Employee
			{
				public const string Create = "[dbo].[Employee.Create]";
				public const string Delete = "[dbo].[Employee.Delete]";
				public const string Get = "[dbo].[Employee.Get]";
				public const string GetList = "[dbo].[Employee.GetList]";
			}
		}

		public static class Connections
		{
			public static string Facilitator
			{
				get { return ConfigurationManager.ConnectionStrings[ "Facilitator" ].ConnectionString; }
			}
		}
	}
}

Usage:

publicEmployee[ ] GetEmployees( Guid companyID, bool includeInactive )
{
  List<Employee> list = newList<Employee>( );
 
  using( DAL dal = DAL.Create( Constants.DB.Connections.Facilitator ) )
  {
    dal.Open( );
 
    SqlParamCollection sqlParams = SqlParamCollection.Create( );
    sqlParams.Add( Constants.DB.Params.CompanyID, companyID );
    sqlParams.Add( Constants.DB.Params.IncludeInactive, includeInactive );
 
    using( SafeDataReader dr = SafeDataReader.Create( dal.ExecuteReader( Constants.DB.Sprocs.Employee.GetList, sqlParams ) ) )
    {
      while( dr.Read( ) )
      {
        list.Add( EmployeeCreator.Create( dr ) );
      }
    }
  }
  return list.ToArray( );
}

Comments?
[/SIZE]