本文实例讲述了C#创建数据库及附加数据库的操作方法。分享给大家供大家参考，具体如下：
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/// <summary>/// 附加数据库方法/// </summary>/// <param name="strSql">连接数据库字符串，连接master系统数据库</param>/// <param name="DataName">数据库名字</param>/// <param name="strMdf">数据库文件MDF的路径</param>/// <param name="strLdf">数据库文件LDF的路径</param>/// <param name="path">安装目录</param>private void CreateDataBase( string strSql, string DataName, string strMdf, string strLdf, string path){ SqlConnection myConn = new SqlConnection(strSql); String str = null ; try { str = " EXEC sp_attach_db @dbname='"+DataName+"',@filename1='"+strMdf+"',@filename2='"+strLdf+"'"; SqlCommand myCommand = new SqlCommand(str, myConn); myConn.Open(); myCommand.ExecuteNonQuery(); MessageBox.Show("数据库安装成功！点击确定继续");//需Using System.Windows.Forms } catch(Exception e) { MessageBox.Show("数据库安装失败！" + e.Message+"\n\n"+"您可以手动附加数据"); System.Diagnostics.Process.Start(path);//打开安装目录 } finally { myConn.Close(); }}public override void Install(System.Collections.IDictionary stateSaver){ string server = this.Context.Parameters["server"];//服务器名称 string uid = this.Context.Parameters["user"];//SQlServer用户名 string pwd = this.Context.Parameters["pwd"];//密码 string path = this.Context.Parameters["targetdir"];//安装目录 string strSql = "server=" + server + ";uid=" + uid + ";pwd=" + pwd + ";database=master";//连接数据库字符串 string DataName = "JXC";//数据库名 string strMdf = path + @"JXC.mdf";//MDF文件路径，这里需注意文件名要与刚添加的数据库文件名一样！ string strLdf = path + @"jxc_log.ldf";//LDF文件路径 base.Install(stateSaver); this.CreateDataBase(strSql, DataName, strMdf, strLdf, path);//开始创建数据库}/// <summary>/// 测试连接/// </summary>/// <param name="serverName"></param>/// <param name="dbName"></param>/// <param name="userName"></param>/// <param name="password"></param>private SqlConnection TestConnection(string serverName, string dbName, string userName, string password){ string connectionString = GetConnectionString(serverName, dbName, userName, password); SqlConnection connection = new SqlConnection(connectionString); try { if (connection.State != ConnectionState.Open) { connection.Open(); } return connection; } catch { CloseConnection(connection); throw new InstallException("安装失败!\n数据库配置有误,请正确配置信息！"); }}/// <summary>/// 得到连接字符串/// </summary>/// <param name="serverName"></param>/// <param name="dbName"></param>/// <param name="userName"></param>/// <param name="password"></param>/// <returns></returns>private string GetConnectionString(string serverName, string dbName, string userName, string password){ string connectionString = "Data Source={0};Initial Catalog={1};User ID={2};Password={3}"; connectionString = string.Format(connectionString, serverName, dbName, userName, password); return connectionString;}/// <summary>/// 创建数据库/// </summary>/// <param name="serverName"></param>/// <param name="dbName"></param>/// <param name="userName"></param>/// <param name="password"></param>/// <param name="connection"></param>/// <param name="stateSaver"></param>public int CreateDataBase(SqlConnection connection){ int result = -1; connection.ChangeDatabase("master"); string createDBSql = @" if Exists(select 1 from sysdatabases where [name]=N'{0}') begin drop database {0} end GO CREATE DATABASE {0} "; createDBSql = string.Format(createDBSql, _dbName); //因为有Go在SQLCommand中不认识，所以以Go为分隔符取sql语句 char[] split = new char[] { 'G', 'O' }; string[] sqlList = createDBSql.Split(split); SqlCommand command = null; try { command = connection.CreateCommand(); command.CommandType = System.Data.CommandType.Text; foreach (string sqlItem in sqlList) { if (sqlItem.Length > 2) { command.CommandText = sqlItem; result = command.ExecuteNonQuery(); } } return result; } catch { CloseConnection(connection); command.Dispose(); throw new InstallException("安装失败!\n数据库配置不正确!"); }}/// <summary>/// 分隔SQL语句/// </summary>/// <param name="sql"></param>/// <returns></returns>private string[] splitSql(string sql){ Regex regex = new Regex("^GO", RegexOptions.IgnoreCase | RegexOptions.Multiline); string[] sqlList = regex.Split(sql.ToUpper()); return sqlList;} |
希望本文所述对大家C#程序设计有所帮助。
