private void LoginButton_Click(object sender, EventArgs e) { try { user.Username = usernameTextBox.Text; if (user.Username == String.Empty) { errorProvider.SetError(usernameTextBox, "Invalid credential provided!"); return; } user.Password = passwordTextBox.Text; if (user.Password == String.Empty) { errorProvider.SetError(passwordTextBox, "Invalid credential provided!"); return; } bool isChecked = _loginManager.CheckCredential(user); if (isChecked) { Reset(this.Controls); MessageBox.Show("Successfully Logged In!"); Index index = new Index(); index.Show(); this.Hide(); } else { MessageBox.Show("Connection Time-Out!"); } } catch (Exception exception) { MessageBox.Show(exception.Message); } }