Call for a form method from another class

[Demir]

I want to update the text in a label from another class, but I don't know how to do it.

I'm running a flow in the next class:

private void Form1_Load(object sender, EventArgs e)
{
    Thread thread = new Thread(delegate() { Auth.CheckAuth(); });
    thread.Start();
}

Class

class Auth
{
    public static void CheckAuth()
    {
        while (true)
        {
            //тут нужно обновлять информацию в форме
            Form1.label1.Invoke((MethodInvoker)(delegate() { Form1.label1.Text = "INFO"; }));
            Thread.Sleep(7000);
        }
    }
}

I tried delegates, but it's vain.

I don't know what he wants.

public void update_Label1(string text)
{
    label1.Text = text;
}

And

Form1.update_Label1("INFO");

And I challenge the same place in the classroom. He's a statist, but if he does, he' it's about 50 more mistakes.

Help me make sure that you can do what you're up to?

[Marcee]

The mistake is, Form1 It's not an object, it's a class. That's why only static methods can be taken from it, because label is a normal field and you get a mistake.

Instead, we need to use a copy of the class.

For example:

Thread thread = new Thread(delegate() { Auth.CheckAuth(this); });

in method

public static void CheckAuth(Form1 form)

and inside

form.label1.Invoke((MethodInvoker)(delegate() { form.label1.Text = "INFO"; }));