I'm having a public const string logpath & logfile; in my Form1

I'm trying to access it in my LoginForm, like this:

//Create a temp file
                    File.Create(Form1.Paths.logpath + comboBox1.Text + ".tmp");
// Tried to assign the value (in LoginForm) to logfile so that I can use it in Form3
                    Form1.Paths.logfile = Form1.Paths.logpath + comboBox1.Text + ".tmp";         // Not accepting

// I also tried this
                    string tmpfile = Form1.Paths.logpath + comboBox1.Text + ".tmp";   //tmpfile's value is ""

• On successful login a temp file of Username is created


• Username is fetched from comboBox.text in "Login" form


• Login formload event will check if comboBox.Items = filename


• If yes then a simple messagebox.show will say "Another user is logged in, kindly wait". and will close the Login form so that two users should not login to edit the main file.


• Form3 logout (hyperlink) click event should fetch the path so that logout can delete the temp file