Membership API

Membership.CreateUser(EmailBox.Text, PassBox.Text);

<membership defaultProvider="MyMembershipProvider">
      <providers>
        <add name="MyMembershipProvider"
             connectionStringName="Order"
             applicationName="MyMembership"
             requiresUniqueEmail="true"
             passwordFormat="Hashed"
             minRequiredPasswordLength="3"
             type="System.Web.Security.SqlMembershipProvider"
             />
      </providers>
    </membership>

protected void LoginButton_Click(object sender, EventArgs e)
    {
        TextBox usrbox = (TextBox)FindControl(LoginForm.UserName);
        TextBox pasbox = (TextBox)FindControl(LoginForm.Password);
        string user = usrbox.Text;
        string pass = pasbox.Text;
    }

if(Membership.ValidateUser(user,pass))
        {
            FormsAuthentication.RedirectToLoginPage(user);
        }

TextBox usrbox = (TextBox)LoginForm.FindControl("UserName");

protected void Button1_Click(object sender, EventArgs e)
    {
        if (!Page.IsValid) return;
        RegisterDetails orderdet = new RegisterDetails(FNBox.Text, EmailBox.Text, PassBox.Text);
 
        Membership.CreateUser(FNBox.Text, PassBox.Text, EmailBox.Text);
        FormsAuthentication.RedirectToLoginPage(FNBox.Text);
    }

protected void LoginButton_Click(object sender, EventArgs e)
    {
        Control lgnview = (Control)LoginView2.FindControl("LoginForm");
        TextBox usrbox = (TextBox)lgnview.FindControl("UserName");
        TextBox pasbox = (TextBox)lgnview.FindControl("Password");
        string user = usrbox.Text;
        string pass = pasbox.Text;
        if(Membership.ValidateUser(user,pass))
        {
            FormsAuthentication.RedirectToLoginPage(user);
        }
    }