Modify form attributes of the main app from extern class

Hi to all,
I've this little problem that I can't resolve from my own, in a windows application created using VS2005.
As you know I've a principal class, called program.cs, where the main create and launch the principal form application, which class is called form, as this code:

static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form());
}

Now, I've another class called Thread, that I create and run from the Form class.

In this Thread class, I want to execute a method that add object to one listbox in my Form.
I've created a public method in Form class but I can't call it from the Thread class because I don't know the name of the instance of the application.

How can I do

Thank you

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Modify form attributes of the main app from extern class

sri111

Are you using object of thread class in the object of Form Class Can you post your class's code

Best Regards,

felipe17

RizwanSharp wrote:

Caioshin wrote:
Hi to all,

Now, I've another class called Thread, that I create and run from the Form class.

In this Thread class, I want to execute a method that add object to one listbox in my Form.
I've created a public method in Form class but I can't call it from the Thread class because I don't know the name of the instance of the application.

To add an object to a ListBox why do you need instance of application

listBox.Items.Add(someObject);

What's the problem actually Clarify it!

Best Regards,

Yes I know how is the method, but I can't simply use the listbox, because it belong to the Form class.
I'm in the thread class, and if I want to modify properties of another class (that is not a static class, is the class of the Form, instanced and executed by the main method in the code that I've written in my first post) I need to know the name of the instance that I want to modify, isn't it

So I don't know how to access to the listbox, its name is not accessible from another class (even if the class is public, and even if I use Form.listbox), and I can't declare a static method in the Form class to modify the listbox because I'm in a non-static class.

Araki66
Ok, I've my Form class, called Form1.cs, that can access to all properties of the windows form.
I've another class, called ThreadClass.cs, where I start a thread (in its constructor) in this way:
public ThreadClass()
{
ThreadListen = new Thread(new ThreadStart(StartListening));
ThreadListen.Start();
}

In the Form1 class, I instance the ThreadClass so the new Thread is created and can be executed. I do this in this way:

public partial class Form1 : Form
{
ThreadClass ObjectThreadClass = new ThreadClass();
.....

Now, in the Form1 class, that is the graphic class, I've a listbox and I can modify or add object to it.
I want only create a method in this class, that permit to other class to add object to the listbox.
I've create a public method called AddToList that only add object to the listbox, but from the thread class I can't access to it, because I don't know the name of the instance of the Form class.

In a few words: I can't access to the Listbox from the ThreadClass (or I don't know how I can), but I need to do it.
Simon FERQUEL
nobody can tell me how to modify properties of windows form from another class

I need something similar to this but I don't know how to obtain the same results with a Listbox

mf915

Caioshin wrote:
Hi to all,

Now, I've another class called Thread, that I create and run from the Form class.

In this Thread class, I want to execute a method that add object to one listbox in my Form.
I've created a public method in Form class but I can't call it from the Thread class because I don't know the name of the instance of the application.

To add an object to a ListBox why do you need instance of application

listBox.Items.Add(someObject);

What's the problem actually Clarify it!

Best Regards,

Modify form attributes of the main app from extern class

Answer this question