Guys, please note that most of the header files and functions would be automatically loaded when you double click on the controls/forms. Here, after double clicking on the Login button we find the following screen !! First of all we declare a variable accessible by all the functions. So we declare it before the form initialisation and the code is as follows: public static String uname; First we need to know what the Login button does. When the Login button is clicked the code first checks if the given credentials are correct or not. So here we use a if else loop. So, inside the "private void btn_login(Object sender, EventArgs e)" write the following code : private void btn_login_Click(object sender, EventArgs e) { if (txt_uname.Text == "Martin" &...