private void btnLogin_Click(object sender, EventArgs e)
{
Users user = new Users();
string username = txbUserName.Text.Trim();
string password = txbPassword.Text.Trim();
UserBusinessLogic usersLogicBusiness = new UserBusinessLogic();
user = usersLogicBusiness.GetUsersByUsername(username);
if (user == null)
{
MessageBox.Show("该用户不存在！");
}
else
{
byte[] input = Encoding.Default.GetBytes(this.txbPassword.Text.Trim());
MD5 md5 = new MD5CryptoServiceProvider();
byte[] output = md5.ComputeHash(input);
password = BitConverter.ToString(output).Replace("-", "");
if (user.Password == password)
{
this.Hide();
MainForm mainForm = new MainForm(user.UserID, this);
mainForm.Show();
}
else
{
MessageBox.Show("密码不正确，请重新输入！");
}
}
}