安裝 Newtonsoft.Json

Install-Package Newtonsoft.Json

代碼

HttpClient client = new HttpClient();// 獲取網頁內容HttpResponseMessage response = client.GetAsync("https://opentdb.com/api.php?amount=10&category=18&difficulty=easy&type=multiple").Result;
response.EnsureSuccessStatusCode();  // 確保請求成功
string content = response.Content.ReadAsStringAsync().Result;
//Console.WriteLine(content);
Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(content);
List<Result> results = JsonConvert.DeserializeObject<List<Result>>(dic["results"].ToString());
foreach(Result result in results)
{result.incorrect_answers.ForEach(item =>Console.WriteLine(item));
}

Result類

internal class Result
{public string type;public string difficulty;public string category;public string question;public string correct_answer;public List<string> incorrect_answers;
}

winform代碼

using Newtonsoft.Json;namespace WinFormsApp1
{public partial class Form1 : Form{List<Result> results = new List<Result>();int index = 0;public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){HttpClient client = new HttpClient();// 獲取網頁內容HttpResponseMessage response = client.GetAsync("https://opentdb.com/api.php?amount=10&category=18&difficulty=easy&type=multiple").Result;response.EnsureSuccessStatusCode();  // 確保請求成功string content = response.Content.ReadAsStringAsync().Result;//Console.WriteLine(content);Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(content);results = JsonConvert.DeserializeObject<List<Result>>(dic["results"].ToString());this.label1.Text = results[index].question;List<string> tmpList = new List<string>();tmpList.Add(results[index].correct_answer);tmpList.Add(results[index].incorrect_answers[0]);tmpList.Add(results[index].incorrect_answers[1]);tmpList.Add(results[index].incorrect_answers[2]);// 使用 Random 和 Sort 打亂順序Random random = new Random();tmpList.Sort((a, b) => random.Next(-1, 2));this.radioButton1.Text = tmpList[0];this.radioButton2.Text = tmpList[1];this.radioButton3.Text = tmpList[2];this.radioButton4.Text = tmpList[3];index++;this.button1.Enabled = (index < results.Count);this.radioButton1.ForeColor = Color.Black;this.radioButton2.ForeColor = Color.Black;this.radioButton3.ForeColor = Color.Black;this.radioButton4.ForeColor = Color.Black;this.radioButton1.Checked = false;this.radioButton2.Checked = false;this.radioButton3.Checked = false;this.radioButton4.Checked = false;}private void button1_Click(object sender, EventArgs e){this.label1.Text = results[index].question;List<string> tmpList = new List<string>();tmpList.Add(results[index].correct_answer);tmpList.Add(results[index].incorrect_answers[0]);tmpList.Add(results[index].incorrect_answers[1]);tmpList.Add(results[index].incorrect_answers[2]);// 使用 Random 和 Sort 打亂順序Random random = new Random();tmpList.Sort((a, b) => random.Next(-1, 2));this.radioButton1.Text = tmpList[0];this.radioButton2.Text = tmpList[1];this.radioButton3.Text = tmpList[2];this.radioButton4.Text = tmpList[3];index++;this.button1.Enabled = (index < results.Count);this.radioButton1.ForeColor = Color.Black;this.radioButton2.ForeColor = Color.Black;this.radioButton3.ForeColor = Color.Black;this.radioButton4.ForeColor = Color.Black;this.radioButton1.Checked = false;this.radioButton2.Checked = false;this.radioButton3.Checked = false;this.radioButton4.Checked = false;}private void showCorrectAnswer(){if (this.radioButton1.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton1.ForeColor = Color.Blue;}if (this.radioButton2.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton2.ForeColor = Color.Blue;}if (this.radioButton3.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton3.ForeColor = Color.Blue;}if (this.radioButton4.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton4.ForeColor = Color.Blue;}}private void radioButton1_Click(object sender, EventArgs e){if (this.radioButton1.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton1.ForeColor = Color.Blue;}else{this.radioButton1.ForeColor = Color.Red;showCorrectAnswer();}}private void radioButton2_Click(object sender, EventArgs e){if (this.radioButton2.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton2.ForeColor = Color.Blue;}else{this.radioButton2.ForeColor = Color.Red;showCorrectAnswer();}}private void radioButton3_Click(object sender, EventArgs e){if (this.radioButton3.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton3.ForeColor = Color.Blue;}else{this.radioButton3.ForeColor = Color.Red;showCorrectAnswer();}}private void radioButton4_Click(object sender, EventArgs e){if (this.radioButton4.Text.Equals(this.results[index - 1].correct_answer)){this.radioButton4.ForeColor = Color.Blue;}else{this.radioButton4.ForeColor = Color.Red;showCorrectAnswer();}}}
}