Please, can you help me how can i get data from class for second Initialize. Problem is that for third Step is "Login" and "Password" -> Null But i defined this "Login" and "Password" in second step. Can you tell me why is login and password for third step null and how can i fix it? I wont create static class for this.
2 Answers
So unless I'm missing something here:
access.ValidateLogin(login.Login, login.Password);
The login object has the values you set during the process of getting data.
If you're not going to leverage the same object, and you want them the same, then I guess you'd have to do this:
LoginValidation access = new LoginValidation();
access.Login = login.Login;
access.Password = login.Password;
access.ValidateLogin(loginText.Text, passwordText.Text);
But this is really odd. It will work, but this just doesn't make sense at all.
4 Comments
Radek Tarant
problem is not here access.ValidateLogin(loginText.Text, passwordText.Text); Problem is that in second step i defined Login and Password for class Collections but in third step this definion is again empty. (null)
Mike Perrenoud
@RadekTarant, they aren't the same instance of the object. How would the values persist, or migrate, between instances?
Radek Tarant
Thx for help i little edited this ´access.ValidateLogin(login.Login, login.Password);´ and now its works. THX!
Mike Perrenoud
@Radek, I'm glad I could be of assistance!
To elaborate on the comments for learning purposes.
Inheritance != Object Reference
Give the following:
public class A
{
public String Foo;
}
public class B : A
{
SetFoo(String foo)
{
Foo = foo
}
}
public class C : A
{
UseFoo()
{
PrintLn(Foo);
}
}
When you create the object B and set Foo, that does not set the Foo in C simple because they both inherit from A. They are different objects, so have different references to their own Foo
So, your code could do something like this and be correct :
public void Main()
{
var validLoginInfo = new LoginInfo(loginText.Text)
var isValid = new LoginValidator(loginText.Text, passwordText.Text, validLoginInfo).Validate();
...
}
Then you can use the given values and compare to the valid login information.
loginvariable at all after initializing it. Think about that.