Rock, Paper, Scissor game - how to end when one wins three times?

Question

I am writing a Rock(Sten), Paper(Påse), Scissor(Sax) game, that plays against the computer. It works and all but I want to break the game when one off the two wins three tim

Answer 1

Instead of trying to fix your code with the current methods I would suggest adding the following to make your code easier to follow:

1: Use enums to give a clear meaning to numbers.

public enum Choice
{
    Rock,
    Paper,
    Scissor
}

public enum WinResult
{
    Won,
    Tie,
    Lost
}

2: Add a method to ask input from user and return the result.

private Choice GiveChoice()
{
    // This is a label where we can jump to if the input was invalid.
    start:

    // Ask the question.
    Console.Clear();
    Console.WriteLine("Choose (0:Rock, 1:Paper, 2:Scissor):");
    string answer = Console.ReadLine();
    int result = -1;

    // Validate and re-ask if invalid.
    if (!int.TryParse(answer, out result) || (result < 0 && result > 2))
        goto start;

    return (Choice) result;
}

3: Add a method to compare 2 results from eachother.

// Returns if v1 has won, tied or lost from v2. (Left to right)
private WinResult CompareForWinner(Choice v1, Choice v2)
{
    if (v1 == Choice.Paper)
    {
        if (v2 == Choice.Paper)
            return WinResult.Tie;
        if (v2 == Choice.Rock)
            return WinResult.Lost;

        return WinResult.Won;
    }
    if (v1 == Choice.Rock)
    {
        if (v2 == Choice.Paper)
            return WinResult.Lost;
        if (v2 == Choice.Rock)
            return WinResult.Tie;

        return WinResult.Won;
    }

    // v1 = Scissor.
    if (v2 == Choice.Paper)
        return WinResult.Won;
    if (v2 == Choice.Rock)
        return WinResult.Lost;

    return WinResult.Tie;
}

It's not a direct answer to your question. But I think it will help you solve it yourself.