SQLHelper.cs

 1 using System;

 2 using System.Collections.Generic;

 3 using System.Data;

 4 using System.Data.SqlClient;

 5 using System.Linq;

 6 using System.Reflection;

 7 using System.Text;

 8 using System.Threading.Tasks;

 9 

10 namespace DataBaseUility

11 {

12     /// <summary>

13     /// 数据库使用公共类

14     /// </summary>

15     public class SQLHelper

16     {

17         public static string Connection

18         {

19             get

20             {

21                 return "Data Source=.;Database=ShortMessage;Integrated Security=true";

22             }

23         }

24 

25         /// <summary>

26         /// 增删改数据

27         /// </summary>

28         /// <param name="strSql"></param>

29         /// <returns></returns>

30         public static bool Processing(string strSql)

31         {

32             using (SqlConnection sqlCon = new SqlConnection(Connection))

33             {

34                 sqlCon.Open();

35                 SqlCommand sqlCom = new SqlCommand(strSql, sqlCon);

36                 if (sqlCom.ExecuteNonQuery() > 0)

37                 {

38                     return true;

39                 }

40                 return false;

41             }

42         }

43 

44         /// <summary>

45         /// 指定条件查询，返回实体集合

46         /// </summary>

47         /// <returns></returns>

48         public static List<T> GetTabaleValue<T>(string strSql)

49             where T : class,new()

50         {

51             using (SqlConnection sqlCon = new SqlConnection(DatabaseCommon.Connection))

52             {

53                 sqlCon.Open();

54                 SqlDataAdapter sqlDA = new SqlDataAdapter(strSql, sqlCon);

55                 DataTable dt = new DataTable();

56                 sqlDA.Fill(dt);

57                 List<T> config = DTToModel<T>(dt);

58                 return config;

59             }

60         }

61 

62         /// <summary>

63         /// 数据表转换为实体

64         /// </summary>

65         /// <typeparam name="T"></typeparam>

66         /// <param name="dt"></param>

67         /// <returns></returns>

68         public static List<T> DTToModel<T>(DataTable dt) where T : class,new()

69         {

70             Type type = typeof(T);

71             PropertyInfo[] files = type.GetProperties();

72             List<T> list = new List<T>();

73             foreach (DataRow dr in dt.Rows)

74             {

75                 T model = new T();

76                 for (int i = 0; i < files.Count(); i++)

77                 {

78                     files[i].SetValue(model, dr[i]);

79                 }

80                 list.Add(model);

81             }

82             return list;

83         }

84     }

85 

86 }