Show the code. Start a C# Windows form application Add a button, five textboxes and a listbox to the form. When the button is clicked, the text in the textboxes is added to the collection and displayed in the listbox. Get this programming working first. The list should look like this.

one two

three four

five

Now, if at this point, you change the text in one of the textboxes and click the button again, it should update the collection and show in the listbox. This means you need to add coding to clear the listbox and repopulate with the new text. If you change five to SEVEN and click the button again. The program should make the list look like this:

one two

three four SEVEN

Get it working as described and then add the following. Which ever one changed, put an * next to it so it looks like this:

one two three four *SEVEN

Each subsequent click should show the entry that changed.