private void buttonRegister_Click(object sender, EventArgs e) { if (Password == RepeatedPassword) { Dictionary <string, object> par = new Dictionary <string, object> { { "@username", UserName }, { "@password", Password } }; string Query = $"CREATE USER { UserName }@localhost IDENTIFIED BY '{ Password }';" + $"GRANT SELECT ON ekstraklasa.* TO { UserName }@localhost;"; _connection = DBconnection.Init("root", ""); bool result = _connection.CreateUser(Query); if (result) { MessageBox.Show($"Successfully created a new user { UserName }"); this.Close(); return; } else { MessageBox.Show("Could not created a new user"); } } else { MessageBox.Show("Passwords must match"); } }