Compare Property values of two json objects in c#

Question

I have a two json objects like this below,

Json 1:

{
"data": {
  "firstName": "xxx",
  "lastName": "yyy",
  "age": "29"
}
}

Json 2:

{
 "data": {
    "firstName": "aaa",
    "lastName": "yyy",
    "age": "30",
    "location": "USA"
},
"meta": {
  "browser": "chrome",
  "ip": "999.999.999"
    }
}

How can i compare properties of json 1 with json 2 and return the bool value if values are equal ?

From the above example the firstName value is different in both json objects so the result will return bool value as false , otherwise it will return true.

Please help, thanks in advance !!!

Note that there are no such things as a JSON objects. They are strings — Cid
– Cid, Commented Nov 18, 2020 at 7:32
Please note that the [asp.net] tag is for ASP.NET (Framework) and [asp.net-core] is for ASP.NET (Core). I would expect them to be mutually exclusive, so seeing both is a little strange and can make questions unclear. They aren't relevant to this question anyway, so I've removed them. — ProgrammingLlama
– ProgrammingLlama, Commented Nov 18, 2020 at 7:35
@Cid: I think it's entirely reasonable to refer to JSON objects. Would you object to someone using the term "XML element"? A "JSON object" is a parallel concept to that - and "object" is the term used in the JSON RFC: tools.ietf.org/html/rfc8259#section-4. A JSON object could be represented in code without deserializing to a schema-specific .NET class using JObject in Json.NET, for example. — Jon Skeet
– Jon Skeet, Commented Nov 18, 2020 at 8:19
@Cid: They're entities referred to in the JSON RFC as "objects". So while referring to them in the context of JSON (rather than in the context of a programming language representation) I think it's fine to refer to them as objects. They are objects in that context. Again, do you try to "correct" anyone referring to XML elements? It's exactly the same, except that "object" is overloaded in this case where "element" isn't. — Jon Skeet
– Jon Skeet, Commented Nov 18, 2020 at 8:58

surfmuggle · Accepted Answer · 2023-02-28 20:35:38Z

0

Approach #1 - Using JObject from Newtonsoft.Json Library

var json1 = File.ReadAllText("json1.json");
var json2 = File.ReadAllText("json2.json");
    
var jObj1 = JObject.Parse(json1);
var jObj2 = JObject.Parse(json2);
    
if (jObj1["data"]["firstName"] != null 
     && jObj2["data"]["firstName"] != null 
     && jObj1["data"]["firstName"].ToString() 
         == jObj2["data"]["firstName"].ToString())
{
   //condition is true
   Console.WriteLine("true");
}
else
{
   //condition is false
   Console.WriteLine("false");
}

Approach #2 - Using Modal & JsonConvert from Newtonsoft.Json Library. I have used json2csharp to convert the json to c# class

public class Data
{
   public string firstName { get; set; }
   public string lastName { get; set; }
   public string age { get; set; }
   public string location { get; set; }
}
    
public class Meta
{
   public string browser { get; set; }
   public string ip { get; set; }
}
    
public class Root
{
   public Data data { get; set; }
   public Meta meta { get; set; }
}

var jObj1 = JsonConvert.DeserializeObject<Root>(json1);
var jObj2 = JsonConvert.DeserializeObject<Root>(json2);
    
if (jObj1.data.firstName.Equals(jObj2.data.firstName))
{
   Console.WriteLine("true");
}
else
{
   Console.WriteLine("false");
}

edited Feb 28, 2023 at 20:35

surfmuggle

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answered Nov 18, 2020 at 8:03

Krishna Varma

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4 Comments

Mafii Over a year ago

If I were you, I would specify that you're using Newtonsoft.Json (newtonsoft.com/json), but otherwise great answer.

Krishna Varma Over a year ago

@Mafii, thanks for the input. I will remember this when I am posting new :)

Vicky Over a year ago

@KrishnaMuppalla in my scenario json 1 properties will randomly change like on second request it may (or) may not contain firstName property . At that time i will get error while executing if condition .

Krishna Varma Over a year ago

@Vicky, then I suggest using model and Jsonconvert.. I have updated the post

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