C＃JSON反序列化字典 <string, Dictionary<string, string> &gt;可选？

Question

My payload would look something like this:

{
    "REFERENCE": "1",
    "FIELDS" : {
        "CUST" : "1234",
        "PROD" : "PR2134",
        "LIMIT" : "12345",
        "LINES" : {
              "LINE" : "01",
              "DATA" : "12"
        }
    }
}

My object simply has the following:

public class TriggerRequest
{
    public string reference { get; set; }
    public Dictionary<string, string> fields { get; set; }

}

Obviously, this doesn't handle the LINES object. How can I create a class that deserializes an inbound payload where something like LINES is dynamic (ie I can send in any Dictionary> at any point in the payload and it'll deserialize correctly. Is this something when I need to create a custom JsonConverter?

Answer 1

You could use dynamic instead.

public class TriggerRequest
{
    public string reference { get; set; }
    public dynamic fields { get; set; }
}

This should allow you to access (string)request.fields.lines.data directly in your code, for example.

However, if you don't know at compile time what values will be in there, you may prefer to make fields a JObject .

public class TriggerRequest
{
    public string reference { get; set; }
    public JObject fields { get; set; }
}

This gives you the opportunity to write code that inspects what kind of data is in each of its properties and respond accordingly.

Finally, if you do know what properties you expect fields to have, create a separate class for it.

public class TriggerRequest
{
    public string reference { get; set; }
    public TriggerRequestFields fields { get; set; }
}

public class TriggerRequestFields
{
    public string cust {get;set;}
    ...
    public TriggerRequestLines lines {get;set;}
}

public class TriggerRequestLines
{
    public string line {get;set;}
    public string data {get;set;}
}

Answer 2

Try changing

public Dictionary<string, dynamic> fields { get; set; }

With

public Dictionary<string, object> fields { get; set; }