SQLite操作總結

引用：

System.Data.SQLite.dll

System.Data.SqlClient.dll 

 SQLite.Interop.076.dll

 

注意：：：：SQLite.Interop.076.dll 這樣的dll必須放在wince設備上（“計算機\BT-W_Series\\\Windows“或者“程序根目錄“）

using System;
using System.Data.SQLite;

namespace Framework.DataAccess
{
    public class SQLiteMager
    {
        //數據庫連接
        SQLiteConnection m_dbConnection;

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

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

        //創建一個空的數據庫
        public void createNewDatabase()
        {
            SQLiteConnection.CreateFile("MyDatabase.sqlite");
        }

        //創建一個連接到指定數據庫
        public void connectToDatabase()
        {
            m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
       
            m_dbConnection.Open();
        }

        //在指定數據庫中創建一個table
        public void createTable()
        {
            string sql = "create table highscores (name varchar(20), score int)";
            SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
            command.ExecuteNonQuery();
        }

        //插入一些數據
        public 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查詢語句，並顯示結果
        public 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();
        }
    }
}

　　

eg：：

#region SQLite 操作（檢查數據庫和表格是否存在，不存在則創建）

//,如果數據庫不存在，則創建數據庫 MyDatabase
if (!File.Exists("MyDatabase.sqlite"))   SQLiteConnection.CreateFile("MyDatabase.sqlite");

//創建數據庫MyDatabase的連接
SQLiteHelper _SQLiteHelper = new SQLiteHelper("Data Source=MyDatabase.sqlite;Version=3;DateTimeFormat=Ticks;");

//在MyDatabase數據庫 執行-創建表格
_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "CREATE TABLE IF NOT EXISTS highscores (name varchar(20), score int)");

////DataSet obj2 = _SQLiteHelper.ExecuteDataSet(CommandType.Text, "select * from highscores order by score desc");

////int dt2 = obj2.Tables[0].Rows.Count;

//////在MyDatabase數據庫 執行-插入數據
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me', 3000)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me2', 3002)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me', 3000)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me2', 3002)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me', 3000)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me2', 3002)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me', 3000)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me2', 3002)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me', 3000)");
////_SQLiteHelper.ExecuteNonQuery(CommandType.Text, "insert into highscores (name, score) values ('Me2', 3002)");
//////在MyDatabase數據庫 執行-查詢
////DataSet obj = _SQLiteHelper.ExecuteDataSet(CommandType.Text, "select * from highscores order by score desc");

//// int dt= obj.Tables[0].Rows.Count;
//////SQLiteMager ddds = new SQLiteMager();

#endregion