C# 嵌套字典

我的语法有什么问题？我希望能够通过这个获得值“Genesis”info["Gen"]["name"]

    public var info = new Dictionary<string, Dictionary<string, string>> {
    {"Gen", new Dictionary<string, string> {
    {"name", "Genesis"},
    {"chapters", "50"},
    {"before", ""},
    {"after", "Exod"}
    }},
    {"Exod", new Dictionary<string, string> {
    {"name", "Exodus"},
    {"chapters", "40"},
    {"before", "Gen"},
    {"after", "Lev"}
    }}};

您不能使用定义类字段var.

Change var to Dictionary<string, Dictionary<string, string>>:

public Dictionary<string, Dictionary<string, string>> info =
    new Dictionary<string, Dictionary<string, string>>
    {
        {
            "Gen",
            new Dictionary<string, string>
            {
                {"name", "Genesis"},
                {"chapters", "50"},
                {"before", ""},
                {"after", "Exod"}
            }
        },
        {
            "Exod",
            new Dictionary<string, string>
            {
                {"name", "Exodus"},
                {"chapters", "40"},
                {"before", "Gen"},
                {"after", "Lev"}
            }
        }
    };

See here https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/implicitly-typed-local-variables欲了解更多信息var关键字及其用法。

在 C# 9 中，引入了目标类型的新表达式 https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-9.0/target-typed-new，您可以将字段定义重写为：

public Dictionary<string, Dictionary<string, string>> info = new()
{
    {
        "Gen",
        new Dictionary<string, string>
        {
            {"name", "Genesis"},
            {"chapters", "50"},
            {"before", ""},
            {"after", "Exod"}
        }
    },
    {
        "Exod",
        new Dictionary<string, string>
        {
            {"name", "Exodus"},
            {"chapters", "40"},
            {"before", "Gen"},
            {"after", "Lev"}
        }
    }
};