/// <summary> /// 获取一个DbContext对象 /// </summary> /// <param name="name">连接名称</param> /// <param name="autoClose">是否自动关闭</param> /// <returns>DbContext对象</returns> public static DbContext GetContext(string name, bool autoClose) { //得到映射后连接名称 name = DbConnectionMappingContext.GetMappedConnectionName(name); DbProviderFactory factory = DbConnectionManager.GetDbProviderFactory(name); DbConnectionStringBuilder csb = factory.CreateConnectionStringBuilder(); csb.ConnectionString = DbConnectionManager.GetConnectionString(name); bool enlist = true; if (csb.ContainsKey("enlist")) { enlist = (bool)csb["enlist"]; } DbContext result = null; if (enlist) { result = new AutoEnlistDbContext(name, autoClose); } else { result = new NotEnlistDbContext(name, autoClose); } result.InitDbContext(name, autoClose); result._autoClose = autoClose; result._commandTimeout = DbConnectionManager.GetCommandTimeout(name); return(result); }
private async Task <Tuple <DbConnection, bool> > CreateConnectionAsync(string name) { bool isConnectionCreator = false; // non-transactional operation GraphWithoutTransaction connections = this.GraphWithoutTx; DbConnection connection = GetConnection(name); if ((connection != null) && (connection.State != ConnectionState.Open)) { if (connection.ConnectionString.IsNullOrEmpty()) { connection.ConnectionString = DbConnectionManager.GetConnectionString(name); } await OpenConnectionAsync(name, connection); WriteTraceInfo(connection.DataSource + "." + connection.Database + "[" + SNTPClient.AdjustedTime.ToString("yyyyMMdd HH:mm:ss.fff") + "]", " Open Connection "); } return(new Tuple <DbConnection, bool>(connection, isConnectionCreator)); }