public static bool TestConnectionString(Session session, DatabaseSetupInfo dbInfo, bool databaseShouldBeNew, bool userInterfaceEnabled) { string message = ""; dbInfo.UseExistingDatabase = false; session["DB_Valid"] = "False"; Func <bool> asker = userInterfaceEnabled ? () => MessageBox.Show(session.InstallerWindowWrapper(), Messages.DatabaseAlreadyExistsDoYouWantToUseExisting, "", MessageBoxButtons.YesNo) == DialogResult.Yes : null as Func <bool>; if (dbInfo.Validate(ref message)) { if (dbInfo.ValidateDatabaseExistence(databaseShouldBeNew, asker, ref message)) { session["DB_Valid"] = "True"; return(true); } else { session["DB_Valid"] = message; if (userInterfaceEnabled && !databaseShouldBeNew) { MessageBox.Show(session.InstallerWindowWrapper(), message, "", MessageBoxButtons.OK); } return(false); } } else { session["DB_Valid"] = message; if (userInterfaceEnabled) { MessageBox.Show(session.InstallerWindowWrapper(), message, "", MessageBoxButtons.OK); } return(false); } }