Incorrect syntax near the keyword 'ORDER'

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C#7.0

Incorrect syntax near the keyword 'ORDER'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near the keyword 'ORDER'.

Dear all,
I get the error same as the above but no idea how to solve it.
Here is my code:

public DataTable getINASecKeywordList(String Shortcode)
        {
            DataTable dt = new DataTable();
            Database dbCon = DatabaseFactory.CreateDatabase("InaPremium");
            string cmd = "";
             string keyword = "";

            try
            {
               
               if (Shortcode == "All" || Shortcode == "")
                {
                   cmd = "SELECT DISTINCT(seckeyword) FROM INA_Keyword ORDER BY seckeyword";
                }
                else
                {

                    cmd = "SELECT DISTINCT(seckeyword) FROM INA_Keyword WHERE shortcode = "+ Shortcode + " AND keyword = " + keyword + " ORDER BY seckeyword";
                }
                using (DbCommand dbcmd = dbCon.GetSqlStringCommand(cmd))
                {
                    dbcmd.CommandType = CommandType.Text;
                    dbcmd.CommandTimeout = 100;
                    dt = dbCon.ExecuteDataSet(dbcmd).Tables[0];
                }
                return dt;
            }
            catch (Exception ex)
            {
                Logger.LogToFile(ConfigurationManager.AppSettings.Get("errLogPath") + "INADAC.txt", ex);
                throw;
            }
        }

I have no idea to solving for the "Incorrect syntax near the keyword 'ORDER'.
Please help thank you.

What I have tried:

Trying to solve the error that incorrect syntax