本文实例分析了C# SQlite操作方法。分享给大家供大家参考，具体如下：
最近项目需求用C#保存一些数据，如此先总结一下。需要下载Sqlite 库 SourceForge 链接网址http://sourceforge.net/projects/sqlite-dotnet2/或到官方网http://www.sqlite.org/download.html下载都可以，下载之后安装。在C#项目中添加引用 引入安装目录bin中的System.Data.SQLite.dll。添加命名空间using System.Data.SQLite;便可以在你的项目中
对扩平台的微型数据库SQlite 进行使用了，
主要注意一点是：
数据库若未创建则使用：
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SQLiteConnection.CreateFile(databaseName); |
数据库已经创建，并要进行访问：
复制代码 代码如下:
SQLiteConnection m_conn = new SQLiteConnection("DataSource="+m_dbName+";Version=3;New=False;Compress=True;");
下面是项目中封装的操作数据库代码，使用时可稍微修改便可在项目中使用。
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using System;using System.Collections.Generic;using System.Text;using System.Data.SQLite;namespace Toolbar{ public class CSPDatabase { protected string m_dbName; protected string m_tablename; protected string m_password; public CSPDatabase(string dbName) { m_dbName = dbName; m_tablename = "MhtInfo"; m_password = ""; } //Create DataBase public virtual void Init() { } public virtual void CreateDataBase() { } public virtual void OpenDataBase() { } public virtual void SetPassWord(string password) { } //Connect DataBase public virtual void ConnectDataBase() { } //Create Table public virtual void CreateTable(string tableName) { } //Insert Data public virtual void Insert(string mhtlocation) { } }} |
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using System;using System.Collections.Generic;using System.Text;using System.Data.SQLite;using System.Windows.Forms;namespace Toolbar{ class SqliteDatabase : CSPDatabase { private SQLiteConnection m_conn= null; private SQLiteCommand m_cmd=null; public SqliteDatabase(string dbName):base(dbName) { } public override void Init() { if(m_conn == null) m_conn = new SQLiteConnection(); m_cmd = new SQLiteCommand(); m_cmd.Connection = m_conn; } public override void CreateDataBase() { //Create Database try { SQLiteConnection.CreateFile(m_dbName); Init(); ConnectDataBase(); } catch (System.Exception e) { MessageBox.Show("Create DataBase Failed!"); } } public override void OpenDataBase() { m_conn = new SQLiteConnection("Data Source="+m_dbName+";Version=3;New=False;Compress=True;"); Init(); ConnectDataBase(); } public override void SetPassWord(string password) { m_password = password; } public override void ConnectDataBase() { //Connect to DataBase try { SQLiteConnectionStringBuilder connstr = new SQLiteConnectionStringBuilder(); connstr.DataSource = m_dbName; if(m_password != "") connstr.Password = m_password; m_conn.ConnectionString = connstr.ToString(); } catch (System.Exception e) { MessageBox.Show("Fail to Connect to the database"); } } //Create Table public override void CreateTable(string tableName) { try { m_tablename = tableName; m_conn.Open(); string sql = "CREATE TABLE " + tableName + "(mhtlocation varchar(20))"; m_cmd.CommandText = sql; m_cmd.ExecuteNonQuery(); m_conn.Close(); } catch (System.Exception e) { MessageBox.Show("Create Table Failed!"); } } public override void Insert(string mhtlocation) { try { //Insert Data m_conn.Open(); string sql = "insert into [" + m_tablename + "] values('" + mhtlocation + "')"; m_cmd.CommandText = sql; m_cmd.ExecuteNonQuery(); m_conn.Close(); } catch (System.Exception e) { MessageBox.Show(e.ToString()); } } }} |
希望本文所述对大家C#程序设计有所帮助。
