问将数据添加到oracle数据库时，我收到'ORA-01745:无效的主机/绑定变量名‘错误

EN

public class NewOtherCompanyMapper
{
    OtherCompany om;
    private Database db;
    private DbCommand cmd;
    private DbConnection con;

    public void AddNDADetails(string id)
    {
        try
        {
            con = db.CreateConnection();
            con.Open();

            string query = string.Format("INSERT INTO NDAInformation (NDAID,RegNumber,DateCreate,RefName,ReqServ,ServDetails) VALUES (:ndaID,:regnumber,TO_DATE(:date,'DDMMYYYY'),:refname,:regserv,:servdetails)");
            cmd = db.GetSqlStringCommand(query);
            cmd = con.CreateCommand();
            cmd.CommandText = query;
            db.ExecuteNonQuery(cmd);

            db.AddInParameter(cmd, "ndaID", DbType.String, id);
            db.AddInParameter(cmd, "regnumber", DbType.String, om.RegNumber);
            db.AddInParameter(cmd, "date", DbType.Date, om.Date);
            db.AddInParameter(cmd, "refname", DbType.String, om.ComRef);
            db.AddInParameter(cmd, "regserv", DbType.String, om.ComService);
            db.AddInParameter(cmd, "servdetails", DbType.String, string.Join(",", om.ReqServiceDetails));
        }

        catch (Exception ex)
        {
            throw ex;
        } 
    }
}