I do not know of a good Cross DB solution. It may be more elegant to check specific exception types for the DBMSs that you do use. For example, MySQL would be:

I do not know of a good Cross DB solution. It may be more elegant to check specific exception types for the DBMSs that you do use. For example, MySQL would be: https://github.com/mysql-net/MySqlConnector/blob/master/src/MySqlConnector/MySql.Data.MySqlClient/MySqlException.cs https://github.com/mysql-net/MySqlConnector/blob/master/src/... Check that MySqlException.Number == 1062 for Duplicate entry. Add one check per DBMS that you use.