How to restore SQL Server database through C# code

Question

I try to restore the database like this:

SQL = @\"RESTORE DATABASE MyDataBase TO DISK=\'d:\\MyDATA.BAK\'\";
                Cmd = new SqlCommand(SQL, Conn);
         


        

Answer 1

I've ended with this solution. Name of my database was Stats This will work without installed MSSQL management studio

    public void BackUpDB(string fname)
    {
        using (SqlConnection cn = new SqlConnection(_cstr))
        {
            cn.Open();
            string cmd = "BACKUP DATABASE [Stats] TO DISK='" + fname + "'";
            using (var command = new SqlCommand(cmd, cn))
            {
                command.ExecuteNonQuery();
            }
        }
    }

    public void RestoreDB(string fname)
    {
        using (SqlConnection cn = new SqlConnection(_cstr))
        {
            cn.Open();
            #region step 1 SET SINGLE_USER WITH ROLLBACK
            string sql = "IF DB_ID('Stats') IS NOT NULL ALTER DATABASE [Stats] SET SINGLE_USER WITH ROLLBACK IMMEDIATE";
            using (var command = new SqlCommand(sql, cn))
            {
                command.ExecuteNonQuery();
            }
            #endregion
            #region step 2 InstanceDefaultDataPath

            sql = "SELECT ServerProperty(N'InstanceDefaultDataPath') AS default_file";
            string default_file = "NONE";
            using (var command = new SqlCommand(sql, cn))
            {
                using (var reader = command.ExecuteReader())
                {
                   if (reader.Read())
                    {
                        default_file = reader.GetString(reader.GetOrdinal("default_file"));
                    }
                }
            }
            sql = "SELECT ServerProperty(N'InstanceDefaultLogPath') AS default_log";
            string default_log = "NONE";
            using (var command = new SqlCommand(sql, cn))
            {
                using (var reader = command.ExecuteReader())
                {
                    if (reader.Read())
                    {
                        default_log = reader.GetString(reader.GetOrdinal("default_log"));
                    }
                }
            }
            #endregion
            #region step 3 Restore
            sql = "USE MASTER RESTORE DATABASE [Stats] FROM DISK='" + fname + "' WITH  FILE = 1, MOVE N'Stats' TO '" + default_file + "Stats.mdf', MOVE N'Stats_Log' TO '"+ default_log+ "Stats_Log.ldf', NOUNLOAD,  REPLACE,  STATS = 1;";
            using (var command = new SqlCommand(sql, cn))
            {
                command.ExecuteNonQuery();
            }
            #endregion
            #region step 4 SET MULTI_USER
            sql = "ALTER DATABASE [Stats] SET MULTI_USER";
            using (var command = new SqlCommand(sql, cn))
            {
                command.ExecuteNonQuery();
            }
            #endregion
        }
    }