C# 遍历类的列表

我已经从一个文本文件中列出了一个团队列表。我只是无法反复阅读

using(StreamReader sr = new StreamReader("TXT1.txt"))
{
    using(JsonReader jr = new JsonTextReader(sr))
    {
        JsonSerializer js = new JsonSerializer();
        List<Teams> leagueTeams = js.Deserialize<List<Teams>>(jr);
    }
}

但是联盟球队的说法有一个错误

在这种情况下，它并不存在

整段代码：

class Teams
{
    public string name;
    public int GoalDiff;
    public int POints;
}
class Program
{
    static void Main(string[] args)
    {
        using(StreamReader sr = new StreamReader("TXT1.txt"))
        {
            using(JsonReader jr = new JsonTextReader(sr))
            {
                JsonSerializer js = new JsonSerializer();
                List<Teams> leagueTeams = js.Deserialize<List<Teams>>(jr);
            }
        }

        foreach (var item in LeagueTeams)
        {

        }
    }
}

---

您试图访问其声明范围之外的联盟球队，这就是为什么会出现此错误。因此，您需要在使用声明之前移动列表联盟团队声明：

List<Teams> leagueTeams = new List<Teams>();
using(StreamReader sr = new StreamReader("TXT1.txt"))
{
   ....
   ....
   leagueTeams = js.Deserialize<List<Teams>>(jr);

---

您试图访问其声明范围之外的联盟球队，这就是为什么会出现此错误。因此，您需要在使用声明之前移动列表联盟团队声明：

List<Teams> leagueTeams = new List<Teams>();
using(StreamReader sr = new StreamReader("TXT1.txt"))
{
   ....
   ....
   leagueTeams = js.Deserialize<List<Teams>>(jr);

---

您可能正在尝试迭代LeagueTeams类，您可能想做的是迭代刚刚通过反序列化解析文件创建的列表

class Program
{
    static void Main(string[] args)
    {
        List<Teams> leagueTeams = new List<Teams>();
        using(StreamReader sr = new StreamReader("TXT1.txt"))
        {
            using(JsonReader jr = new JsonTextReader(sr))
            {
                JsonSerializer js = new JsonSerializer();
                leagueTeams = js.Deserialize<List<Teams>>(jr);
            }
        }

        foreach (var team in leagueTeams)
        {
            // access each team by 'team' variable
        }

        // another way using LINQ
        leagueTeams.ForEach(team => 
        {
            // access each team by 'team' variable
        });
    }
}

---

您可能正在尝试迭代LeagueTeams类，您可能想做的是迭代刚刚通过反序列化解析文件创建的列表

class Program
{
    static void Main(string[] args)
    {
        List<Teams> leagueTeams = new List<Teams>();
        using(StreamReader sr = new StreamReader("TXT1.txt"))
        {
            using(JsonReader jr = new JsonTextReader(sr))
            {
                JsonSerializer js = new JsonSerializer();
                leagueTeams = js.Deserialize<List<Teams>>(jr);
            }
        }

        foreach (var team in leagueTeams)
        {
            // access each team by 'team' variable
        }

        // another way using LINQ
        leagueTeams.ForEach(team => 
        {
            // access each team by 'team' variable
        });
    }
}

在首次使用前声明列出leagueTeams。leagueTeams在foreach！=没有大写首字母的leagueTeams。而且，我们必须有一个主副本。在第一次使用前声明列出leagueTeams。foreach中的leagueTeams！=没有大写首字母的联赛球队。而且，我们必须有一个大师级的傻瓜。