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I made a login with authentication in DotNet windows forms app and I'm trying to do my best to guard the database from SQL injection attacks, but it seems like there was a wrong logic in my code. Any help would be appreciated private void BtnLogin_Click(object sender, EventArgs e) //user login...

Hello, I have here a simple CRUD system connected to my Postgres database. I noticed that every time I inserted a new record it will assign a new ID number next to the previous one, then after I deleted that record the ID number is no longer usable, when you add a new record it will assign the...