Question

I have a double dimension string array that holds each buttons specific coordinates

string[,] gridPass = new string[20, 20];


    private void Form1_Load(object sender, EventArgs e)
    {
        foreach (int row in Enumerable.Range(0, 20))
        {
            foreach (int col in Enumerable.Range(0, 20))
            {

                Button b = new Button();
                b.Size = new System.Drawing.Size(30, 30);
                b.Location = new Point(row * 30, col * 30);
                gridPass[row, col] = row.ToString() + " - " + col.ToString();
                b.Tag =  gridPass[row, col];
                b.Text = gridPass[row, col];
                this.Controls.Add(b);
                b.Click += new EventHandler(AttackHandler);
            }


        }

When I attack using the event handler on my buttons

private void AttackHandler(object sender, EventArgs e)
        {
            Button clickedButton;
            string tagValue = "";

            clickedButton = (Button)sender;
            tagValue = (string)clickedButton.Tag;
            theSea.attackLocation(tagValue);

        }

It’s obviously sending a string like 0 – 1 or 8 – 4 whatever the button’s coordinates are.
When I pass that string to the attackLocation method in my Sea class I want to be able to extract those two numbers to reference them with the array in my Sea class to see if there is a boat there. I Need those X and Y values back to reference the exact same location in another array basically. So I can do something like.

public void attackLocation(string attackCoords)
    {
        MessageBox.Show("Attacking " + attackCoords);
        x = however to convert it back;
        y = however to convert it back;
        foreach (Ship s in shipList)
        {
            if (grid[x,y] == 0)
            {
                MessageBox.Show("Attacked this block before."); 
            }

Answer 1

You can use String.Split to extract the hyphen separated values and apply String.Trim on them to remove the spaces before we pass it to int.Parse to convert string to number.

//b.Tag =  "0 - 1";    
string []arr = b.Tag.ToString().Split('-');    
int num1 = int.Parse(arr[0].Trim());
int num2 = int.Parse(arr[1].Trim());