public void ChangeMeetingName()
    {

        string MeetingName = TxtBoxChangeName.Text;


        string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

        SqlConnection conn = new SqlConnection(connStr); ;

        SqlCommand cmd = new SqlCommand(@"UPDATE Meetings SET MeetingName=@MeetingName WHERE MeetingsID=@MeetingsID)", conn);

        SqlParameter Parameter1 = new SqlParameter();
        Parameter1.ParameterName = "@MeetingName";
        Parameter1.Value = MeetingName;
        cmd.Parameters.Add(Parameter1);

        SqlParameter Parameter2 = new SqlParameter();
        Parameter2.ParameterName = "@MeetingsID";
        Parameter2.Value = MeetingID;
        cmd.Parameters.Add(Parameter2);

        conn.Open();
        cmd.ExecuteNonQuery();
        conn.Close();
    }