将图像与随机测试问题关联起来

Question

我正在编写一个C＃程序来显示图像问题的随机测试。

该测试有10个问题。我也有10个图像添加到ImageList中。我的问题是随机选择的，以显示我解决的每个测验。我想每个问题都有它的图片。

我有，我从文件加载问题的集合：

Collection<question> questions = new Collection<question>(); 
StreamReader sr = new StreamReader("quiz.txt"); 
while (!sr.EndOfStream) 
{ 
    question i = new question(); 
    i.text = sr.ReadLine(); 
    questions.Add(i); 
} 
sr.Close(); 

Random r = new Random(); 
int x = r.Next(questions.Count); 

我说从工具箱中ImageList控制。然后我使用图像集合编辑器将图像添加到它。因为我使用的代码：

pictureBox1.Image = imageList1.Images[a]; 

时a > imageList1.Images.Count

我怎么可能让current_question从ImageList中的图像之间的相关性这会停止？

UPDATE

public class question 
{ 
public bool displayed = false; 
public string text, answer1, answer2; 
} 

private void button1_Click_1(object sender, EventArgs e) 
{ 
     string line = questions[current_question].text; 
     int delimiter = line.IndexOf(':'); 
     int imageIndex = int.Parse(line.Substring(0, delimiter)); 
     string questionText=line.Substring(delimiter + 1); 
     pictureBox1.Image = imageList1.Images[imageIndex];//I still have problems with  
                  //images 
     if (nr > questions.Count) 
           { 
            button1.Enabled = false; 
            } 
     else 
     { 
      Random r = new Random(); 
      int x; 
      do { x = r.Next(questions.Count); } 
        while (questions[x].displayed == true); 
      textBox1.Text = questionText;// now it doesn't appear the index;thank you 
      radioButton1.Text = questions[x].answer1; // is not from the current 
                 // question 
      radioButton2.Text = questions[x].answer2;// is not from the current 
                // question 
      questions[x].displayed= true; 
      current_question = x; 
     } 
     } 

Answer 1

你可以尝试，包括在你的quiz.txt文件中的图像索引：

3：什么是在酒吧foo的？
10：如何添加小部件？
4：为什么在foo上挑一个酒吧？

然后，当你拿起你的随机问题，你可以提取的图像索引和问题的文字在你的程序中的点：

int x = r.Next(questions.Count); 
// intrebari is a variable of class 'question' 
string line = intrebari[x].text; 
// find the colon 
int delimiter = line.IndexOf(':'); 
// the image index is left of the colon 
int imageIndex = int.Parse(line.Substring(0, delimiter)); 
// and the question itself is right of the colon 
string questionText = line.Substring(delimiter + 1); 
// set the image in the picture box 
pictureBox1.Image = imageList1.Images[imageIndex]; 

那么接下来questionText是你显示的字符串和imageIndex你可以用它来选择正确的图像：imageList1.Images[imageIndex]分配给你的PictureBox。

如果您仍然显示问题和图像索引，这意味着当您应该显示questionText变量时，您正在显示line变量。此外，分配图像索引你的问题时，“由一休”错误提防的，因为索引为0

编辑

private void button1_Click_1(object sender, EventArgs e) 
{ 
    if (nr > questions.Count) 
    { 
     button1.Enabled = false; 
    } 
    else 
    { 
     Random r = new Random(); 
     int x; 
     do { x = r.Next(questions.Count); } 
       while (questions[x].displayed == true); 

     string line = questions[x].text; 
     int delimiter = line.IndexOf(':'); 
     int imageIndex = int.Parse(line.Substring(0, delimiter)); 
     string questionText=line.Substring(delimiter + 1); 
     pictureBox1.Image = imageList1.Images[imageIndex];//I still have problems with   

     textBox1.Text = questionText;// now it doesn't appear the index;thank you 
     radioButton1.Text = questions[x].answer1; // is not from the current 
                // question 
     radioButton2.Text = questions[x].answer2;// is not from the current 
               // question 
     questions[x].displayed= true; 
     current_question = x; 
    } 
    }