Ufdjrw

I am making a chess game in windows form and after I made it so I once a button is pressed I will get his place on the board so I can use math on it (Like if I want to find the square exactly in front of a square I can just find the square with y +1)

void button64_Click(object sender, EventArgs e)
 
 if (partOfTurn == false)
 
 Xa = 8;
 Ya = 8;
 partOfTurn = true;
 

 if (partOfTurn == true)
 
 Xb = 8;
 Yb = 8;
 partOfTurn = false;
 Click();
 
 

I need a way to change the second button's background image into the first one's and to clear the first one but in order to do so with
button1.BackgroundImage = button2.backgroundImage

I need to use the name of the button. How can I do this without doing it in a switch with 4096 cases of any button combination?

Since this is for learning I'll not solve it but just rather give a hint:

The sender object you get passed as a parameter is basically the object you call the event handler on, in your case the clicked button itself.

private void buttonClicked(object sender, EventArgs e) 
 Button clickedButton = (Button) sender; 
 

The Tag property of each Button is an object. You could use a Point or create your own class. I have named mine Coord but it could be Position or Square. You could also use chess notation a1, c2, although using numbers is easier to determine relations between squares.

(Coord could perhaps be extended to include the chess notation as a property, and anything else useful.)

public class Coord

 public int X get; set; 
 public int Y get; set; 

 public Coord(int x, int y)
 
 X = x;
 Y = y;
 


public partial class Form1 : Form

 private Button previousButton = null;

 public Form1()
 
 InitializeComponent();

 button1.Click += Buttons_Click;
 button2.Click += Buttons_Click;

 button1.Tag = new Coord(0, 0);
 button2.Tag = new Coord(1, 0);
 

 private void Buttons_Click(object sender, EventArgs e)
 
 if (previousButton != null)
 
 // do something with previousButton
 Coord prevCoords = (Coord)(previousButton.Tag);

 MessageBox.Show($"previous coords prevCoords.X prevCoords.Y");
 

 // code to work with the currently clicked button
 // as (Button)sender
 Coord currentCoords = (Coord)((Button)sender).Tag;
 MessageBox.Show($"current coords currentCoords.X currentCoords.Y");

 // remember the current button
 previousButton = (Button)sender;
 

You would still store the buttons in a collection but I haven't included that aspect in my sample code.