我的代码中未包含的RandomNumber语录(来自数据库的语录)

问题描述

尊敬的专家，

Dear Experts,

private int GetRandomNumber(int[] levelIds)
       {
           bool exists = false;
           int randomIndex = 0;
           do
           {
               Random rand = new Random();
               randomIndex = rand.Next(levelIds.Length);
               if (completedQuestionIds.Count > 0)
                   exists = completedQuestionIds.Contains(levelIds[randomIndex]);
           }
           while (exists == true);

           completedQuestionIds.Add(levelIds[randomIndex]);

           Session["CompletedQuestionIds"] = completedQuestionIds;

           return levelIds[randomIndex];
       }

预先感谢您的宝贵答复.

Thanks in advance for your valuable reply

推荐答案

ArrayList availableQuestions = new ArrayList();
ArrayList completedQuestions = new ArrayList();
public Form1()
{
    InitializeComponent();

    for (int i = 1; i <= 10; i++)
    {
        availableQuestions.Add(i);
    }
}
private void button1_Click(object sender, EventArgs e)
{
    GetRandomNumber();
}
private void GetRandomNumber()
{
    if (availableQuestions.Count >= 1)
    {
        Random rand = new Random();
        int QuestionID = Convert.ToInt16(availableQuestions[rand.Next(0, availableQuestions.Count - 1)]);
        completedQuestions.Add(QuestionID);
        availableQuestions.Remove(QuestionID);
    }
}

如果您对此有任何疑问，请告诉我.

谢谢，
Imdadhusen

Please do let me know, if you have any doubt for the same.

Thanks,
Imdadhusen

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