Question

I have a .NET Wndows application in C#. It’s a simple Windows application that is using the MySql 5.1 database community edition. I’ve downloaded the MySql ODBC driver and have created a dsn to my database on my local machine. On my application, I can perform get type queries without problems, but when I execute a given insert statement (not that I’ve tried doing any others), I get the following error:

{“ERROR [HY001] [MySQL][ODBC 5.1 Driver][mysqld-5.0.27-community-nt]Memory allocation error”}

I’m running on a Windows XP machine. My machine has 1 GB of memory.
Anyone have any ideas? See code below

OdbcConnection MyConn = DBConnection.getDBConnection();
    int result = -1;
    try
    {
        MyConn.Open();
        OdbcCommand myCmd = new OdbcCommand();
        myCmd.Connection = MyConn;
        myCmd.CommandType = CommandType.Text;
        OdbcParameter userName = new OdbcParameter("@UserName", u.UserName);
        OdbcParameter password = new OdbcParameter("@Password", u.Password);
        OdbcParameter firstName = new OdbcParameter("@FirstName", u.FirstName);
        OdbcParameter LastName = new OdbcParameter("@LastName", u.LastName);
        OdbcParameter sex = new OdbcParameter("@sex", u.Sex);
        myCmd.Parameters.Add(userName);
        myCmd.Parameters.Add(password);
        myCmd.Parameters.Add(firstName);
        myCmd.Parameters.Add(LastName);
        myCmd.Parameters.Add(sex);
        myCmd.CommandText = mySqlQueries.insertChatUser;
        result = myCmd.ExecuteNonQuery();
    }
    catch (Exception e)
    {
             //{"ERROR [HY001] [MySQL][ODBC 5.1 Driver][mysqld-5.0.27-community-nt]Memory  
             // allocation error"} EXCEPTION ALWAYS THROWN HERE 
    }
    finally
    {
        try
        {
            if (MyConn != null) MyConn.Close();
        }
        finally { }
    }

Answer 1

It was because some fields accept null, I had passed them as null where they should be passed as DBNull.Value. For all the fields which allow null should be checked for null and if found null, DBNull.Value should be passed.