private void button1_Click(object sender, EventArgs e)
{
string Key = textBox1.Text.ToString();
if (textBox1.Text == null)
{
MessageBox.Show("Mật khẩu chưa nhập! ", "Thông báo", MessageBoxButtons.OK);
}
if (int.Parse(Key) % 2 == 0)
{
using (MD5 md5 = MD5.Create())
{
string hash = GetMd5Hash(md5, Key);
System.IO.StreamWriter str = System.IO.File.AppendText("user.txt");
str.WriteLine(hash);
str.Close();
this.Hide();
StartScreen startScreen = new StartScreen();
startScreen.ShowDialog();
this.Close();
}
}
else
{
MessageBox.Show("Sai mật khẩu! ", "Thông báo", MessageBoxButtons.OK);
}
}
private void KeyLogin_Load(object sender, EventArgs e)
{
if (!System.IO.File.Exists("user.txt"))
{
var myfile = System.IO.File.Create("user.txt");
myfile.Close();
}
string pass = System.IO.File.ReadAllText("user.txt");
if (pass.Length != 0)
{
this.Hide();
StartScreen startScreen = new StartScreen();
startScreen.ShowDialog();
this.Close();
}
}