使用c#将数据同时导出到两个表中

我试图将id，姓和名输入到表中，然后根据组合框输入，我创建了另一个记录，之后保存了学生的id和选择了组合框的团队的id。这是我的代码。一切都运行得很好，唯一的问题是，在TeamPlayers表中的记录没有被添加。拜托谁?!?

try
   {
      string team = null;
            using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=;Persist Security Info=False;"))
            {
                OleDbCommand comm = new OleDbCommand("INSERT INTO Students(BaruchID, FirstName, LastName) VALUES(@id, @first, @last)", conn);
                conn.Open();
                comm.Parameters.AddWithValue("@id", tbBaruchID.Text);
                comm.Parameters.AddWithValue("@id", FirstName.Text);
                comm.Parameters.AddWithValue("@id", LastName.Text);
                comm.ExecuteNonQuery();
                conn.Close();
            }
                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:/Users/Junglists/Documents/Visual Studio 2013/Projects/SACC_Baruch/SACC_Baruch/Teams.accdb;Persist Security Info=False;"))
            {
                OleDbCommand comm = new OleDbCommand("SELECT TeamNum FROM Teams WHERE TeamName='" + cbTeam.Text +"'", conn);
                conn.Open();
                OleDbDataReader dr = comm.ExecuteReader(CommandBehavior.SingleResult);
                if (dr.Read())
                {
                    team = dr["TeamNum"].ToString();
                }
                conn.Close();
             }
                using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:/Users/Junglists/Documents/Visual Studio 2013/Projects/SACC_Baruch/SACC_Baruch/Teams.accdb;Persist Security Info=False;"))
            {
                OleDbCommand comm = new OleDbCommand("INSERT INTO TeamPlayers(ID, BaruchID, TeamID) VALUES(@i, @id, @teamid)", conn);
                conn.Open();
                comm.Parameters.AddWithValue("@i", 1);
                comm.Parameters.AddWithValue("@id", tbBaruchID.Text);
                comm.Parameters.AddWithValue("@teamid", int.Parse(team));
                conn.Close();
            }
            MessageBox.Show("Student Added for team"+ cbTeam.Text);
        }