CODEWITHSUNDEEP
jsonasp.net-mvcasp.net-web-api
shamim
shamim

Reputation: 6768

how json parameter pass in asp.net web api action method

My asp.net web api is an standalone application,face problem to pass json sa a parameter.My api method is bellow

[Route("api/UniqueUser/{userInfo}")]
        public HttpResponseMessage GetUniqueUserByEmail(string userInfo)
{
}

In above parameter userInfo is a josn like bellow

{"UserInfo":[{"Id":1,"UserName":"Jxj Bdn","Email":"[email protected]"}]}

When I put this in my browser url show me bellow error

enter image description here

Upvotes: 0

Views: 1113

Answers (1)

Russ Clarke
Russ Clarke

Reputation: 17909

JSON data should go in the body of the request for it to be deserialized, not in the query string/browser URL.

Also, 'string userInfo' will not work as you expect. You can define a class that represents the parameters of your JSON object and it will work correctly.

This would work, for example:

public class UserInfo
{
    public int Id { get; set;}

    public string UserName  { get; set;}

    public string Email  { get; set;}
}

and change this line:

public HttpResponseMessage GetUniqueUserByEmail(UserInfo userInfo)

Edit:

If it's a url that someone needs to pass in you use routing:

https://site/api/UniqueUser/1/Jxj Bdn/[email protected]

And in your controller:

[Route("api/UniqueUser/{id}/{userName}/{email}")]
public HttpResponseMessage GetUniqueUserByEmail(int id, string userName, string email)

Have a look here to see how to do this with traditional query string parameters too:

http://www.asp.net/web-api/overview/formats-and-model-binding/parameter-binding-in-aspnet-web-api

I would strongly suggest using the first method though, it gives you a strongly type object and is a lot easier to deal with if details change, and you get the benefit of the build in model validation.

Can you not make a simple HTML form for your clients to use?

Upvotes: 1

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