c# winform active directory: acces to another form if login succes

Question

i want to create a control from a form where i have login textbox and password textbox, and login button. when i will enter the active directory account name and its password i

Answer 1

i solved what i was looking for

private void btnLogin_Click(object sender, EventArgs e)
        {

            try
            {
                LdapConnection connection = new LdapConnection("AD");
                NetworkCredential credential = new NetworkCredential(txtboxlogin.Text, txtboxpass.Text);
                connection.Credential = credential;
                connection.Bind();

               MessageBox.Show("You are log in");
               Hide();
               if (txtboxlogin.Text == "WantedAdminUser")
               {

               using (AdminForm form2 = new AdminForm())
                   form2.ShowDialog();
               Show(); 
               }
               else
               {
                   using (user userform = new user())
                       userform.ShowDialog();
                   Show();
               }

            }
            catch (LdapException lexc)
            {
                String error = lexc.ServerErrorMessage;
                MessageBox.Show("error account or password.");
            }
            catch (Exception exc)
            {
                MessageBox.Show(Convert.ToString(exc));
            }