转自:http://hi.baidu.com/gaocher/item/e5aca502dade2898a2df4341
string link = File.ReadAllText("database.txt"); conn = new SqlConnection(link); try { conn.Open(); SqlCommand cmd = conn.CreateCommand(); cmd.CommandText = "if object_id( 'baseinfo ') is not null select 1 else select 0"; if ((int)cmd.ExecuteScalar() == 0) { cmd.CommandText = @"CREATE TABLE baseinfo (id bigint identity(1,1) primary key,departure varchar(10),arrival varchar(10),depdate varchar(20),arrdate varchar(20), flightCode varchar(10),departTime varchar(20),arrivalTime varchar(20),departAirportName varchar(20),departAirportCode varchar(10),arrivalAirportName varchar(20),arrivalAirportCode varchar(10),isDirect bit)"; cmd.ExecuteNonQuery(); } cmd.CommandText = "if object_id( 'venderinfo ') is not null select 1 else select 0"; if ((int)cmd.ExecuteScalar() == 0) { cmd.CommandText = @"CREATE TABLE venderinfo (id bigint identity(1,1) primary key,flight_id bigint,vendername nvarchar(30),venderprice int,venderfee int)"; cmd.ExecuteNonQuery(); } } catch (SqlException e) { Console.WriteLine("数据库连接错误,请确认database.txt中的数据库正确连接"); Environment.Exit(-1); }