C# SQLite数据库操作类

C# sqlite数据库操作类，可建立sqliteConnection 数据库连接、Query数据库、执行ExcDbCommand sql命令，以及sqliteParameter[] 、ExecuteReader()、ExecuteNonQuery()、sqliteDataAdapter等操作。

01	using System;

02	System.Collections.Generic;

03	System.Linq;

04 System.Text;

05	System.Configuration;

06 System.Data.sqlite;

07	System.Data;

08 namespace DBHelper.sqlite

09

{

10     public class sqliteHelper

11

12

static string _connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

13	sqliteConnection _connection;

14  

15	public sqliteHelper()

16 {

17	_connection = new sqliteConnection(_connectionString);

18 }

19	sqliteHelper(connectionString)

20 :this()

21

22

_connectionString = connectionString;

23

}

24 25 void open()

26 27             if (_connection.State != ConnectionState.Open)

28                 _connection.open();

29

30

Close()

31

32

(_connection.State != ConnectionState.Closed)

33	_connection.Close();

34 35  

36 DataSet Query(sql)

37

38

return Query(sql, null);

39

40

41

sql,153)!important; background:none!important">params sqliteParameter[] parameters)

42 43             //this.open();

44 sqliteCommand command = ExcDbCommand(sql,parameters);

45	DataSet ds = DataSet();

46 sqliteDataAdapter da = sqliteDataAdapter(command);

47	da.Fill(ds);

48 //this.Close();

49

ds;

50 51 52 bool Exc(53 54 Exc(sql,monospace!important; font-size:10pt!important; min-height:auto!important; display:block!important; background:none!important">55 56 sqliteParameter[] parameters)

57

58

59

.open();

60 int result = command.ExecuteNonQuery();

61

.Close();

62 result > 0;

63

64

sqliteDataReader Read(65

66

Read(sql,monospace!important; font-size:10pt!important; min-height:auto!important; display:block!important; background:none!important">67

68

69

70

71

72

sqliteDataReader reader = command.ExecuteReader();

73	//this.Close();

74 reader;

75

76

sqliteCommand ExcDbCommand(ottom:auto!important; height:auto!important; width:auto!important; line-height:1.1em!important; font-family:Consolas,sqliteParameter[] parameters)

77

78

sqliteCommand command = sqliteCommand(sql,_connection);

79	command.CommandType = CommandType.Text;

80 (parameters == null || parameters.Length == 0)

81

command;

82 foreach (sqliteParameter param in parameters)

83

84

if(param != )

85	command.Parameters.Add(param);

86 87 88 89 90 }

以上文件可保存文件名为：sqliteHelper.cs