分享一个C#的分页类

废话不说只有代码：

 1 using System.Linq;

 2 using System.Collections.Generic;

 3 

 4 namespace CommonLibrary

 5 {

 6     public class PagedList<T> : List<T>

 7     {

 8         #region Properties

 9 

10         public int PageIndex { get; private set; }

11 

12         public int PageSize { get; private set; }

13 

14         public int TotalCount { get; private set; }

15 

16         public int TotalPages { get; private set; }

17 

18         public bool HasPreviousPage

19         {

20             get { return (PageIndex > 0); }

21         }

22         public bool HasNextPage

23         {

24             get { return (PageIndex + 1 < TotalPages); }

25         }

26 

27         #endregion

28        //http://www.cnblogs.com/roucheng/

29         #region Constructors

30 

31         public PagedList(IQueryable<T> source, int pageIndex, int pageSize)

32         {

33             if (source == null || source.Count() < 1)

34                 throw new System.ArgumentNullException("source");

35 

36             int total = source.Count();

37             this.TotalCount = total;

38             this.TotalPages = total / pageSize;

39 

40             if (total % pageSize > 0)

41                 TotalPages++;

42 

43             this.PageSize = pageSize;

44             this.PageIndex = pageIndex;

45             this.AddRange(source.Skip(pageIndex * pageSize).Take(pageSize).ToList());

46         }

47 

48         public PagedList(IList<T> source, int pageIndex, int pageSize)

49         {

50             if (source == null || source.Count() < 1)

51                 throw new System.ArgumentNullException("source");

52 

53             TotalCount = source.Count();

54             TotalPages = TotalCount / pageSize;

55 

56             if (TotalCount % pageSize > 0)

57                 TotalPages++;

58 

59             this.PageSize = pageSize;

60             this.PageIndex = pageIndex;

61             this.AddRange(source.Skip(pageIndex * pageSize).Take(pageSize).ToList());

62         }

63 

64         public PagedList(IEnumerable<T> source, int pageIndex, int pageSize, int totalCount)

65         {

66             if (source == null || source.Count() < 1)

67                 throw new System.ArgumentNullException("source");

68 

69             TotalCount = totalCount;

70             TotalPages = TotalCount / pageSize;

71 

72             if (TotalCount % pageSize > 0)

73                 TotalPages++;

74 

75             this.PageSize = pageSize;

76             this.PageIndex = pageIndex;

77             this.AddRange(source);

78         }

79 

80         #endregion

81     }

82 }