Does an Enum exist for Asc or Desc ordering?

Question

Is there an Enum natively in .NET for asceding or Desceding ordering?

I need to use the ordering concept in different libraries, and I want loose coupling as possible.

Answer 1

There are more than 8 sorting enums in .NET. It goes to show, even at Microsoft engineers will re-invent the wheel. It's also interesting how wildly the commenting practices and code style varies.

Here are the ones I've found:

1. System.ComponentModel.ListSortDirection

   public enum ListSortDirection {
       /// 
       ///    Sort in ascending order.
       /// 
       Ascending,
       /// 
       ///    Sort in descending order.
       /// 
       Descending 
   }
   

2. System.Data.SqlClient.SortOrder

   public enum SortOrder {
       Unspecified     = -1,
       Ascending       = 0,
       Descending      = 1
   }
   

3. System.Data.Linq.SqlClient.SqlOrderType

   internal enum SqlOrderType {
       Ascending,
       Descending
   }
   

4. System.DirectoryServices.SortDirection

   public enum SortDirection
   {
       //
       // Summary:
       //     Sort from smallest to largest. For example, A to Z.
       Ascending,
       //
       // Summary:
       //     Sort from largest to smallest. For example, Z to A.
       Descending
   }
   

5. System.Windows.Forms.SortOrder

   /// 
   /// 
   ///    
   ///       Specifies how items in
   ///       a list are sorted.
   ///    
   /// 
   public enum SortOrder {
   
       /// 
       /// 
       ///    
       ///       The items are
       ///       not sorted.
       ///    
       /// 
       None = 0,
   
       /// 
       /// 
       ///    
       ///       The items
       ///       are sorted in ascending order.
       ///    
       /// 
       Ascending = 1,
   
       /// 
       /// 
       ///    
       ///       The items are
       ///       sorted in descending order.
       ///    
       /// 
       Descending = 2,
   
   }
   

6. System.Web.Helpers.SortDirection

   public enum SortDirection {
       Ascending,
       Descending
   }
   

7. System.Web.UI.WebControls.SortDirection

   public enum SortDirection {
   
   
       Ascending = 0,
   
   
       Descending = 1
   
   }
   

8. System.Xml.XPath.XmlSortOrder

   public enum XmlSortOrder {
       Ascending       = 1,
       Descending      = 2,
   }
   

9. System.Data.Common.EntitySql.AST.OrderKind

   /// 
   
   /// Represents order kind (none=asc,asc,desc).
   /// 
   internal enum OrderKind
   {
       None,
       Asc,
       Desc
   }
   

Edit: Another has arrived since this was originally posted.

10. System.Web.UI.DataVisualization.Charting

    /// 
    
    /// Sorting order (Ascending or Descending).
    /// 
    public enum PointSortOrder
    {
        /// 
    
        /// Ascending sorting order
        /// 
        Ascending, 
    
        /// 
    
        /// Descending sorting order
        /// 
        Descending
    }