如何将 JSON object 列表序列化到文件中，其中 c# 不是数组

Question

I have this code right here to add a piece of JSON to a file, but instead of working it makes an array with [] breaking how my file is read.

var serverid = ctx.Guild.Id.ToString();
List<data> _data = new List<data>();
_data.Add(new data() {
    mute = $"{Role.Name}"
});
string json = JsonConvert.SerializeObject(_data.ToList());
File.WriteAllText(@$".\serverconfigs\{serverid}.json", json);

Answer 1

That's not a valid json. You would need to create a class with an array. Then when you serialize that class it would be serialized like this:

{"_data":[{"mute":"CobraMute"}]}

In your code, it would be like this:

class Program
{
    YourClass myclass = new YourClass();
    myclass._data = new List<data>();
    myclass._data.Add(new data()
    {
        mute = $"{Role.Name}"
    });
    string json = JsonConvert.SerializeObject(myclass);
    File.WriteAllText(@$".\serverconfigs\{serverid}.json", json);
}
class YourClass{
    public List<data> _data;
}

Answer 2

To create your JSON without square brackets, simply omit the list when you serialize:

var _data = new data() {
    mute = $"{Role.Name}"
};
string json = JsonConvert.SerializeObject(_data);
File.WriteAllText(@$".\serverconfigs\{serverid}.json", json);

This will generate: {"mute": "CobraMute"} assumuing that Role.Name is CobraMute