如何使用$符号获取Json变量 [英] How to get Json variable with $ symbol

问题描述

我一直在努力获取$type变量.

I've been pulling my hair to get the $type variable.

jsonTxt.json

jsonTxt.json

{
  "$type": "Things.YourThings.YourThingName, Things",
  "Name": "Doe"      
}

我试图将变量作为string获得，但没有成功.我刚得到null.

I tried to get the variable as a string, but with no success. I just get null.

这是我的工作:

public class CustomName
{

  [JsonProperty("$type")]
  public string Type { get; set; }
  public string Name { get; set; }
}

然后

var customName = JsonConvert.DeserializeObject<CustomName>(jsonText);

实际上，我只想提取名称为YourThingName的类型.

In actual fact, I just want to extract the type which is just the name YourThingName.

推荐答案

尝试一下:

JObject obj = JObject.Parse(jsonText);
var customName = new CustomName()
{
    Name = obj["Name"].ToString(),
    Type = obj["$type"].ToString()
};

然后只得到YourThingName即可使用正则表达式或仅使用String.Split:

Then to get just the YourThingName you can either use a Regex or just String.Split:

string name = Regex.Match(customName.Type, @"(?:\.)(\w*)(?:,)").Groups[1].ToString();

或

string name = customName.Type.Split(',')[0].Split('.')[2];

您必须先进行边界检查，然后才能访问不同的数组，否则将出现IndexOutOfRange异常.

You must do your boundary checks before accessing the different arrays or you'll end up with IndexOutOfRange exceptions.

.Net提琴

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