Extend Tabpage

[gborges]

Hi all!

I create a class named TabPageEx which extends TabPage.

In my app, sometimes it is necessary to get the selected tab from the TabControl ( I named this object as tcDataPanes) in order to add some controls.

I tried to cast from but it does not work.

            tabpage1 = new TabPageEx();
            tabpage1 = (TabPageEx)tcDataPanes.SelectedTab;

An InvalidCastExpection message appears at runtime.

All tabpages that were created are TabPageEx' type. Each tabPageEx object has a FlowLayoutPanel, and there is a method at TabPageEx which returns this container to my app.

What is wrong?

Thank you in advance!

[HanneSThEGreaT]

This link should be helpful :
http://www.dotnetrix.co.uk/tabcontrols.html

[gborges]

This link was very helpful, wih it I solve some other problems which I had.

But, the problem which generates this thread persists.
This code line continues generating an InvalidCastExpection .

This is the class TabPageEx which I coded:

    public class TabPageEx : System.Windows.Forms.TabPage {

        FlowLayoutPanel flowLayoutPanel1;

        public TabPageEx() : base () { 
        }

        public TabPageEx(System.Windows.Forms.TabControl tcDataPanes) : base () {

            tcDataPanes.TabPages.Add("New tab");
        }
    }
}

The situation that the error described in the first message occurs is when I try to retrieve the selected tab page in order to add a new control.

Any ideas? How can I solve it?

Thank you in advance!