C#操作SQLite数据库

【转】http://www.cnblogs.com/luxiaoxun/p/3784729.html

SQLite介绍

SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine.

SQLite是一个开源、免费的小型RDBMS(关系型数据库),能独立运行、无服务器、零配置、支持事物,用C实现,内存占用较小,支持绝大数的SQL92标准。

SQLite数据库官方主页:http://www.sqlite.org/index.html

C#操作SQLite Database

C#下SQLite操作驱动dll下载:System.Data.SQLite

C#使用SQLite步骤:

(1)新建一个project

(2)添加SQLite操作驱动dll引用

(3)使用API操作SQLite DataBase

在这里提醒自己一句 保存到微云了

 

using System;
using System.Data.SQLite;

namespace SQLiteSamples
{
    class Program
    {
        //数据库连接
        SQLiteConnection m_dbConnection;

        static void Main(string[] args)
        {
            Program p = new Program();
        }

        public Program()
        {
            createNewDatabase();
            connectToDatabase();
            createTable();
            fillTable();
            printHighscores();
        }

        //创建一个空的数据库
        void createNewDatabase()
        {
            SQLiteConnection.CreateFile("MyDatabase.sqlite");
        }

        //创建一个连接到指定数据库
        void connectToDatabase()
        {
            m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
            m_dbConnection.Open();
        }

        //在指定数据库中创建一个table
        void createTable()
        {
            string sql = "create table highscores (name varchar(20), score int)";
            SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
            command.ExecuteNonQuery();
        }

        //插入一些数据
        void fillTable()
        {
            string sql = "insert into highscores (name, score) values ('Me', 3000)";
            SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
            command.ExecuteNonQuery();

            sql = "insert into highscores (name, score) values ('Myself', 6000)";
            command = new SQLiteCommand(sql, m_dbConnection);
            command.ExecuteNonQuery();

            sql = "insert into highscores (name, score) values ('And I', 9001)";
            command = new SQLiteCommand(sql, m_dbConnection);
            command.ExecuteNonQuery();
        }

        //使用sql查询语句,并显示结果
        void printHighscores()
        {
            string sql = "select * from highscores order by score desc";
            SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
            SQLiteDataReader reader = command.ExecuteReader();
            while (reader.Read())
                Console.WriteLine("Name: " + reader["name"] + "\tScore: " + reader["score"]);
            Console.ReadLine();
        }
    }
}

关于SQLite的connection string说明:http://www.connectionstrings.com/sqlite/

SQLite GUI客户端列表:http://www.sqlite.org/cvstrac/wiki?p=ManagementTools

SQLite Administrator下载地址:http://download.orbmu2k.de/files/sqliteadmin.zip

操作SQLite Database的C#帮助类SQLite Helper

 检测是否有重名的数据库

原理就是检测相对路径中是否存在相同名字的.sqlite文件

//数据库名称
string Tdb = "";

if (File.Exists(@".\"+Tdb+".sqlite"))
{
MessageBox.Show("存在重名文件 添加失败");

}
else
{
MessageBox.Show("添加成功");
sqlite.createNewDatabase(Tdb);
}

 

    原文作者:sqlite
    原文地址: https://www.cnblogs.com/baimangguo/p/7009191.html
    本文转自网络文章,转载此文章仅为分享知识,如有侵权,请联系博主进行删除。
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