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c#jsonvalidation
Fahad Tahir
Fahad Tahir

Reputation: 21

how to validate the json string in asp.net c#?

I have json string which will pass to the webservice to perform some action on it. My json string will b like this example: 

{"ID":"2","Name":"Tom","data":"[22.3,23.4,21.5]"}

I want to validate the json string if I remove the , (coma):

{"ID":"2""Name":"Tom""data":"[22.3,23.4,21.5]"}

From the json string so its return error message json is not in the correct format.

Upvotes: 2

Views: 1993

Answers (4)

Durai Amuthan.H
Durai Amuthan.H

Reputation: 32320

A working code snippet

public bool isValidJSON(String json) {
try {
JToken token = JObject.Parse(json);
return true; 
}
catch(Exception ex){ 
return false;
} 
}

Source

Upvotes: 0

Benjamin RD
Benjamin RD

Reputation: 12044

Maybe you can try creating the JSON with the function ToJSON()

List<MyObject> people = new List<MyObject>{
                   new MyObject{ID = 1, Name= "Tom", Data= "[22.3,23.4,21.5]"},
                   new Person{ID = 2, Name= "Tome", LastName = ""[22.3,23.4,21.5]"}
                   };


string jsonString = people.ToJSON();

And if you with have the string as JSON you can do something like:

JsonConvert.SerializeObject(jsonString ).Dump();

Or using the Networking JSON: http://james.newtonking.com/json

Upvotes: 0

hman
hman

Reputation: 496

JSON.net and JSONSharp allow you to parse JSON into an object and will have the ability to validate or at least catch an exception on errors

Upvotes: 1

Hogan
Hogan

Reputation: 70538

Try 

var dynamicObject = Json.Decode(jsonString);

And see if it raises an error.

You may need to install the DLL for this separately. I believe it is in the MVC library download.

http://msdn.microsoft.com/en-us/library/system.web.helpers.json%28v=vs.111%29.aspx

Upvotes: 0

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