public bool Login(User user)
{
try
{
User aUser =
dataContext.Users.SingleOrDefault(
u => u.UserName.Equals(user.UserName) && u.Password.Equals(user.Password));
if (aUser != null)
{
return true;
}
return false;
}
catch (Exception exception)
{
throw new Exception(exception.Message);
}
}
private void btnOK_Click(object sender, EventArgs e)
{
if (txtUserName.Text == "")
{
MessageBox.Show("Please enter user name", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtUserName.Focus();
return;
}
if (txtPassword.Text == "")
{
MessageBox.Show("Please enter password", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtPassword.Focus();
return;
}
try
{
User user = new User()
{
UserName = txtUserName.Text,
Password = txtPassword.Text
};
if (userGateway.Login(user))
{
DialogResult = DialogResult.OK;
}
else
{
MessageBox.Show("Login is Failed...Try again !", "Login Denied", MessageBoxButtons.OK,
MessageBoxIcon.Error);
txtUserName.Clear();
txtPassword.Clear();
txtUserName.Focus();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}