Help: HowTo Acces a control from within a class

[Olly]

Hello again!
I fear this i a pretty easy one
I got a progressbar on my form which needs to be updated from time to time. My problem is that the progress is being done in a class in another namespace. How could I change the Value of the progressbar from that class? I just don't see a way to access it.

[Lethal]

You could either pass a reference of the progress bar into your class or you could create a delegate which will callback to a routine on the form that updates the progress bar.

[Olly]

I think I could need an example, I've never used delegates before, neither did I create any references, no matter what I try it does not work. I end with a static void from which I can't access any controls on the form.

[Lethal]

Does this help at all?

private void button1_Click(object sender, System.EventArgs e)
{
	DoSomething mySomething = new DoSomething("Hello World",new DoSomething.UpdateControl(DisplayText));
 
}

private void DisplayText(string myText)
{
	this.textBox1.Text = myText;
}

}

public class DoSomething
{
	string message;
	public delegate void UpdateControl(string message);

	public DoSomething(string message,UpdateControl myUpdate)
	{
		this.message = message;
		myUpdate(message);
	}
}

You could also raise events.

[Olly]

It helps , very much indeed, thank you!

[Olly]

Ok, Iv'e done that! The value is passed to the progressbar!
BUT WHY IS THE PROGRESSBAR NOT REFRESHING?
I've tried to write the value into a textbox for checking, but the text alsow won't change . But when I put a messagebox after that like MessageBox.Show (textBox1.Text, "My Application", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

It will show the the correct value, though the text in the textbox is not the textBox1.Text which the MessageBox says!
Is there something needed to refresh the stuff?