private void button1_Click(object sender, EventArgs e)
{
if (Usuario != "ADMIN" || Contraseña != "admin1234")
{
MDIParent1 obj = new MDIParent1();
obj.Show();
}
else
{
Application.Exit();
}
}
private void btnLogin_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection();
con.ConnectionString = @"Data Source=SAJID-PC\SQLEXPRESS;Initial Catalog=Library_Management;Integrated Security=True;Pooling=False";
con.Open();
SqlCommand cmd = new SqlCommand("select * from library_person where userName='******'and password='******'", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
MDIParent1 md = new MDIParent1();
this.Hide();
md.Show();
}
else
{
MessageBox.Show("Invalid Login please check username and password");
}
con.Close();
}
private void 帮助ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form m1 = new MDIParent1();
m1.Show();
}
private void performLogin()
{
if ((usernameTb.TextLength == 0) || (passwordTb.TextLength == 0))
{
MessageBox.Show("Please Fill All Blanks");
return;
}
if (checkUserExists())
{
String password = passwordTb.Text;
byte[] salt = shg.generateSalt(saltByteSize);
byte[] hash = shg.generateHash(password, salt, hashingIterations, hashByteSize);
String finalHash = Convert.ToBase64String(salt) + ":" + Convert.ToBase64String(hash);
var dbPassword = getDBPassword();
if (checkPasswordsMatch(password, dbPassword))
{
MessageBox.Show("Access Granted");
String username = usernameTb.Text;
String query = "SELECT * FROM useraccounts WHERE Username='******'";
String[] userDetails = crud.getRecordRowDetails(stringconn, query, 4);
bool hasPermission = bool.Parse(userDetails[3]);
if (hasPermission)
{
MDIParent1 mdiparent = new MDIParent1();
mdiparent.Show();
this.Hide();
}
}
else
{
MessageBox.Show("Access Denied");
}
}
else
{
MessageBox.Show("User does not exist");
}
}