是否存在用于Asc或Desc排序的枚举？

Question

是否有一个Enum本身在.NET中用于提升或下降排序？

我需要在不同的库中使用排序概念,我希望尽可能松散耦合.

Answer 1

.NET中有超过8个排序枚举.它表明,即使在微软工程师将重新发明轮子.同样有趣的是评论实践和代码风格各不相同.

以下是我发现的:

1. System.ComponentModel.ListSortDirection

   public enum ListSortDirection {
       /// <devdoc>
       ///    <para>Sort in ascending order.</para>
       /// </devdoc>
       Ascending,
       /// <devdoc>
       ///    <para>Sort in descending order.</para>
       /// </devdoc>
       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

   /// <include file='doc\SortOrder.uex' path='docs/doc[@for="SortOrder"]/*' />
   /// <devdoc>
   ///    <para>
   ///       Specifies how items in
   ///       a list are sorted.
   ///    </para>
   /// </devdoc>
   public enum SortOrder {
   
       /// <include file='doc\SortOrder.uex' path='docs/doc[@for="SortOrder.None"]/*' />
       /// <devdoc>
       ///    <para>
       ///       The items are
       ///       not sorted.
       ///    </para>
       /// </devdoc>
       None = 0,
   
       /// <include file='doc\SortOrder.uex' path='docs/doc[@for="SortOrder.Ascending"]/*' />
       /// <devdoc>
       ///    <para>
       ///       The items
       ///       are sorted in ascending order.
       ///    </para>
       /// </devdoc>
       Ascending = 1,
   
       /// <include file='doc\SortOrder.uex' path='docs/doc[@for="SortOrder.Descending"]/*' />
       /// <devdoc>
       ///    <para>
       ///       The items are
       ///       sorted in descending order.
       ///    </para>
       /// </devdoc>
       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

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

编辑:另一个已经到了,因为这是最初发布的.

10. System.Web.UI.DataVisualization.Charting

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

Answer 2

• System.Data.SqlClient中的SortOrder
• System.ComponentModel中的ListSortDirection