using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data.SqlClient; namespace yrok2 { class Class1 { SqlConnection sqlConnection = new SqlConnection("Data Source=class31000;Initial Catalog=authorizationkhozeev;Integrated Security=True"); public void openConnection() { if (sqlConnection.State == System.Data.ConnectionState.Closed) { sqlConnection.Open(); } } public void closeConnection() { if (sqlConnection.State == System.Data.ConnectionState.Open) { sqlConnection.Close(); } } public SqlConnection GetConnection() { return sqlConnection; } } }