DataTable和List集合互转

 1 /// <summary>

 2         /// 将集合转换成DataTable

 3         /// </summary>

 4         /// <param name="list">集合</param>

 5         /// <returns></returns>

 6         public static DataTable ToDataTable(IList list)

 7         {

 8             DataTable result = new DataTable();

 9             if (list.Count > 0)

10             {

11                 PropertyInfo[] propertys = list[0].GetType().GetProperties();

12                 foreach (PropertyInfo pi in propertys)

13                 {

14                     result.Columns.Add(pi.Name, pi.PropertyType);

15                 }

16                 for (int i = 0; i < list.Count; i++)

17                 {

18                     ArrayList tempList = new ArrayList();

19                     foreach (PropertyInfo pi in propertys)

20                     {

21                         object obj = pi.GetValue(list[i], null);

22                         tempList.Add(obj);

23                     }

24                     object[] array = tempList.ToArray();

25                     result.LoadDataRow(array, true);

26                 }

27             }

28             return result;

29         }

30  

31  

32  

33     /// <summary>

34         /// 讲DataTable转换成集合

35         /// </summary>

36         /// <param name="dt">数据表</param>

37         /// <returns></returns>

38         public static IList<CarNum> ToList(DataTable dt)

39         {

40             // 定义集合

41             IList<CarNum> ts = new List<CarNum>();

42  

43             // 获得此模型的类型

44             Type type = typeof(CarNum);

45  

46             string tempName = "";

47  

48             foreach (DataRow dr in dt.Rows)

49             {

50                 CarNum t = new CarNum();

51  

52                 // 获得此模型的公共属性

53                 PropertyInfo[] propertys = t.GetType().GetProperties();

54  

55                 foreach (PropertyInfo pi in propertys)

56                 {

57                     tempName = pi.Name;

58  

59                     // 检查DataTable是否包含此列

60                     if (dt.Columns.Contains(tempName))

61                     {

62                         // 判断此属性是否有Setter

63                         if (!pi.CanWrite) continue;

64  

65                         object value = dr[tempName];

66                         if (value != DBNull.Value)

67                             pi.SetValue(t, value, null);

68                     }

69                 }

70  

71                 ts.Add(t);

72             }

73  

74             return ts;

75  

76         }

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