private void buttonLoginOk_Click_1(object sender, EventArgs e) { int exist; if (textBoxLoginUsername.Text == "") { textBoxLoginUsername.Text = "Please type User Name"; textBoxLoginPassword.Clear(); textBoxLoginUsername.Select(); } else if (textBoxLoginPassword.Text == "") { textBoxLoginUsername.Text = "Password cannot be blank"; textBoxLoginUsername.Select(0, textBoxLoginUsername.MaxLength); } else { FileHandler filehandler = new FileHandler("users.bin"); exist = filehandler.FindUser(textBoxLoginUsername.Text.ToString(), textBoxLoginPassword.Text.ToString()); if (exist >= 0) { currentUser = textBoxLoginUsername.Text; userfound = true; ExtraAreaIntro exint = new ExtraAreaIntro(); exint.MdiParent = this.ParentForm; exint.Show(); Close(); } else if (exist < 0) { textBoxLoginUsername.Text = "User Not Exist or Wrong Password."; textBoxLoginPassword.Clear(); textBoxLoginUsername.Select(); } } }