This is the area I'm stuck on: Complete the Ended method. The game is over when the grid is full or one player has 3 in a row.

I need help with this C# problem. This is the area I'm stuck on:

3.   Complete the Ended method. The game is over when the grid is full or one player has 3 in a row.

How can I go about displaying the last X or O? Since the conditions have been met (three in a row) it will terminate and not display the last character.

The main program file given is:

As well as the Game Class:

Here is the Ended method :