How to validate JSON using C# - Schema validation using Newton soft?

Question

I have below JSON, and would like to make sure atleast one device present under "Devices" node.

{  
  "pageNumber": 1,  
  "pageSize": 250,   
  "data": [  
    {  
      "Id": "6817662d",  
      "LastModified": "2022-04-09T06:40:40+00:00",  
      "IsActive": true        
      "Devices": [  
        {  
          "Id": "d58f034b",            
          "IsActive": true,  
          "SerialNumber": "754"          
        },  
  {  
          "Id": "005056963bac",            
          "IsActive": true,  
          "SerialNumber": "707"    
        }  
      ]  
 }  
}  

Answer 1

There is Json.NET Schema for performing validation.

Answer 2

Hi @DEEPAK KUMPALA ,

You can use Deserialize subsections of a JSON payload to finish it.

I test it under. Net6.0.

Below is the code:

using System.Collections.Generic;  
using System;  
using System.Text.Json;  
  
namespace DeserializeExtra  
{  
	public class Rootobject  
	{  
		public int pageNumber { get; set; }  
		public int pageSize { get; set; }  
		public Datum[] data { get; set; }  
	}  
  
	public class Datum  
	{  
		public string Id { get; set; }  
		public DateTime LastModified { get; set; }  
		public bool IsActive { get; set; }  
		public Device[] Devices { get; set; }  
	}  
  
	public class Device  
	{  
		public string Id { get; set; }  
		public bool IsActive { get; set; }  
		public string SerialNumber { get; set; }  
	}  
  
	public class Program  
	{  
		public static void Main()  
		{  
			string jsonString =  
@" {  
 	""pageNumber"": 1,  
 	""pageSize"": 250,  
 	""data"": [{  
 		""Id"": ""6817662d"",  
 		""LastModified"": ""2022-04-09T06:40:40+00:00"",  
 		""IsActive"": true,  
 		""Devices"": [{  
 				""Id"": ""d58f034b"",  
 				""IsActive"": true,  
 				""SerialNumber"": ""754""  
 			},  
 			{  
 				""Id"": ""005056963bac"",  
 				""IsActive"": true,  
 				""SerialNumber"": ""707""  
 			}  
 		]  
 	}]  
 }  
";  
  
			Rootobject? rootobject =  
				JsonSerializer.Deserialize<Rootobject>(jsonString);  
			  
			foreach (var datum in rootobject.data)  
			{  
				if (datum.Devices != null) {  
					Console.WriteLine("It at least one device present under Devices node");  
				}  
				foreach (var device in datum.Devices)  
				{  
					Console.WriteLine($"Id:{device.Id}");  
				}  
			}  
		}  
	}  
}  

Output:

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