Question

我正在尝试在数组中显示5个分数，但不幸的是，我在消息框中输入的结果为0。

任何帮助都将不胜感激。

public partial class Form1 : Form
{
    private int[] scoresArray = new int[5];
    private int scoreTotal = 0;
    private int scoreCount = 0;

    public Form1()
    {
        InitializeComponent();
    }

单击添加按钮时，分数最多可存储在阵列中5次。

    private void btnAdd_Click(object sender, EventArgs e)
    {

        try
        {
            if (txtScore.Text == "")
            {
                MessageBox.Show("Score is required", "Entry Error");
            }

            else
            {
                int score = Convert.ToInt32(txtScore.Text);
                decimal average = 0;

                if (score >= 0 && score <= 100)
                {
                    if (scoreCount != 4)
                    {
                        scoreTotal += score;
                        scoresArray[scoreCount] = score;
                        scoreCount++;
                        average = scoreTotal / scoreCount;
                    }
                    else
                    {
                        MessageBox.Show("Array is full");
                    }

                    txtScoreTotal.Text = scoreTotal.ToString();
                    txtScoreCount.Text = (scoreCount + 1).ToString();
                    txtAverage.Text = average.ToString();
                }

                else
                {
                    MessageBox.Show("Score must be greater than 0 and less than or equal to 100.", "Entry Error");
                }
            }
        }

        catch (FormatException)
        {
            MessageBox.Show("Please enter a valid number for the Score field.", "Entry Error");
        }

        txtScore.Focus();
    }

    private void btnDisplayScores_Click(object sender, EventArgs e)
    {
        string message = "";

        for (int i = 0; i < scoresArray.Length; i++)
        {
            message = scoresArray[i].ToString() + "\n";
        }

        MessageBox.Show(message, "Scores");
    }

Answer 1

你在这个循环中保持覆盖 message：

for (int i = 0; i < scoresArray.Length; i++)
{
    message = scoresArray[i].ToString() + "\n";
}

所以它只会显示最后一个值。你可能想要追加代替它：

for (int i = 0; i < scoresArray.Length; i++)
{
    message += scoresArray[i].ToString() + "\n";
}

数组不显示在消息框中 - C＃

1 个答案: