C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

public class Program
{
	public static void Main()
	{
		try
		{
			var jObjectFromEmptyString = JsonConvert.DeserializeObject<JObject>(string.Empty);
			Console.WriteLine(jObjectFromEmptyString == null ? "null" : jObjectFromEmptyString.ToString());
		}
		catch(Exception ex)
		{
			Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
		}

		try
		{
			var jObjectFromNullValue = JsonConvert.DeserializeObject<JObject>(@"null");
			Console.WriteLine(jObjectFromNullValue == null ? "null" : jObjectFromNullValue.ToString());
		}
		catch(Exception ex)
		{
			Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
		}
		
		try
		{
			var jObjectFromEmptyJson = JsonConvert.DeserializeObject<JObject>(@"{}");
			Console.WriteLine(jObjectFromEmptyJson == null ? "null" : jObjectFromEmptyJson.ToString());
		}
		catch(Exception ex)
		{
			Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
		}
		
		try
		{
			var jObjectFromNull = JsonConvert.DeserializeObject<JObject>(null);
			Console.WriteLine(jObjectFromNull == null ? "null" : jObjectFromNull.ToString());
		}
		catch(Exception ex)
		{
			Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
		}
		
		try
		{
			var jObjectFromIncorrectFormat = JsonConvert.DeserializeObject<JObject>(@"<html></html>");
			Console.WriteLine(jObjectFromIncorrectFormat == null ? "null" : jObjectFromIncorrectFormat.ToString());
		}
		catch(Exception ex)
		{
			Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
		}
	}
}

​x
 
using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
​
public class Program
{
    public static void Main()
    {
        try
        {
            var jObjectFromEmptyString = JsonConvert.DeserializeObject<JObject>(string.Empty);
            Console.WriteLine(jObjectFromEmptyString == null ? "null" : jObjectFromEmptyString.ToString());
        }
        catch(Exception ex)
        {
            Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
        }
​
        try
        {
            var jObjectFromNullValue = JsonConvert.DeserializeObject<JObject>(@"null");
            Console.WriteLine(jObjectFromNullValue == null ? "null" : jObjectFromNullValue.ToString());
        }
        catch(Exception ex)
        {
            Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
        }
        
        try
        {
            var jObjectFromEmptyJson = JsonConvert.DeserializeObject<JObject>(@"{}");
            Console.WriteLine(jObjectFromEmptyJson == null ? "null" : jObjectFromEmptyJson.ToString());
        }
        catch(Exception ex)
        {
            Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
        }
        
        try
        {
            var jObjectFromNull = JsonConvert.DeserializeObject<JObject>(null);
            Console.WriteLine(jObjectFromNull == null ? "null" : jObjectFromNull.ToString());
        }
        catch(Exception ex)
        {
            Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
        }
        
        try
        {
            var jObjectFromIncorrectFormat = JsonConvert.DeserializeObject<JObject>(@"<html></html>");
            Console.WriteLine(jObjectFromIncorrectFormat == null ? "null" : jObjectFromIncorrectFormat.ToString());
        }
        catch(Exception ex)
        {
            Console.WriteLine(ex.GetType().FullName + ": " + ex.Message.Replace("\n", " "));
        }
    }
}

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