modify a constructor

[livinginmatrix]

Hi to all. I have the small class below. and a webform
empty to test this class...

If i call to the method generate fields the application
show me the fields, if i click the button the controls
dissapear. But if in the constructor of the class below i
add the controls, this controls dont dissapear if i click
the button in the webform...

Why?

public class
mywebcontrol:System.Web.UI.WebControls.WebControl
{

public TextBox MyTextBox
{
get{return mytextbox;}
set{mytextbox=value;}
}
public Button MyButton
{
get{return mybutton;}
set{mybutton=value;}
}
public mywebcontrol()
{this.MyButton.Click+=new EventHandler
(MyButton_Click);
}
public void MyButton_Click(object sender, EventArgs
e) {
HttpContext.Current.Response.Write (this.MyTextBox.Text);
}
public void Generate_Fields()
{ TextBox new_textbox=new TextBox();
this.MyTextBox[i]=new_textbox;
this.Controls.Add(this.MyTextBox[i]);
this.Controls.Add(this.MyButton);
}
}
}

Thanks In advanced
The main program...