private void addVisitorBtn_Click(object sender, EventArgs e)
{
// creating and refencing a new visitor object
Visitor visitor = this.createVisitor();
if (visitor != null)
{
// inserting visitor to the data grid view
visitorController.insertVisitor(visitor);
if (!File.Exists(visitor_file))
{
// if a new file is created initialize its columns header "visitorid, firstname, lastname and so on"
visitorController.initiateVisitorData(visitor_file);
}
if (visitor != null)
{
// populate data grid view
this.insertToTable(visitor);
// write into csv file
visitorController.writeVisitorsData(visitor, visitor_file);
// clears input fields in the form
this.clearFields();
}
}
}
