CODEWITHSUNDEEP
c#winforms
Daniel Kng
Daniel Kng

Reputation: 796

Close Form2 from Form3, that has been opened in Form1

So, i'm working on a little Game. The "Game.cs" opens the Win-Screen ("winscreen.cs"). The Winscreen gives you the ability to create a New Game. The Game.cs was opened trough the MainMenu.

If you click the New-Game Button on the Winscreen, it opens up a new Playfield:

private void winscreen_again_Click(object sender, EventArgs e)
{
    Game loadGame = new Game();
    loadGame.Show();
}

The Problem is: It opens up the new Playfield, and the old one, that once was opened trough the MainMenu stays open. So i tried loadGame.Close(); which does nothing.

I also tried to do this in my Form1.cs (The MainMenu):

public Game loadGame;

and call this later:

this.loadGame = new Game();   
this.loadGame.StartPosition = FormStartPosition.CenterScreen;
this.loadGame.Show();

To close the Window from the Winscreen.cs i did this in the Winscreen:

Game.loadGame.Close();

and because that didnt worked, i did 

Game closeGame = new Game();
closeGame.loadGame.Close();

but that did not work either, and if i set the public Game loadGame; to "static" the this.loadGame... wouldnt work anymore.

So how do i close the existing Game.cs trough my Winscreen.cs? Thanks!

Upvotes: 0

Views: 93

Answers (1)

Mong Zhu
Mong Zhu

Reputation: 23732

public partial class Winscreen : Form
{
    // Variable to catch the old playfield
    Game oldPlayfield;

    // the old playfield is passed in the constructor
    public Winscreen(Game opf)
    {
        this.oldPlayfield = opf;
        InitializeComponent();
    }

    private void winscreen_again_Click(object sender, EventArgs e)
    {
        Game loadGame = new Game();
        loadGame.Show();

        // close the old field
        this.oldPlayfield.Close();
    }
// rest of the class
}

In Game.cs inside the CheckWinner method you would call the Winscreen like this:

//Shows the winner Animation and changes the Text to the Winning player
Winscreen loadWinscreen = new Winscreen(this);

Unfortunately I cannot test it now to verify whether it would work. This is also not the cleanest solution. 2.nd option: I would suggest rather to have a boolean property repeatGame that can be set to true in Winscreen.cs when the user presses the winscreen_again Button. Create a property of type Winscreen inside Game.cs and subscribe to the Closing event in the constructor of Game. Inside the eventhandler you could ask whether the repeatGame flag has been set and if so you could just clear the playfield and start a new game.

Upvotes: 1

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