ASP.NET MVC - Return JavascriptResult and Json parameter

Question

Here is the scenario

In MVC, it is easy to return a Javascript to be executed on the client

public ActionResult DoSomething()
{       
    return JavaScript("alert('Hello world!');");            
}

On the client, I have a Javascript that takes a JSon object as parameter

Something similar to this :

function open(options) {...}

I wanted to call this function from my action passing it a json object generated on the server so I wrote this

public ActionResult DoSomething()
{
      var viewData = new {...};
      return JavaScript( "open('" + Json(viewData) + "')" );          
}

However, when my Javascript function get called, I don't get any data but this: open('System.Web.Mvc.JsonResult')

I will appreciate any help on this matter

Thanks

can you show me please all your javascript code?? please!

r.r
– r.r

2011-01-19 12:10:32 +00:00
Commented Jan 19, 2011 at 12:10 — r.r
– r.r, Commented Jan 19, 2011 at 12:10

Jesper Palm · Accepted Answer · 2010-08-22 08:41:21Z

2

The Json method returns a JsonResult. Not a JSON string. You could use the JavaScriptSerializer

public ActionResult DoSomething()
{
      JavaScriptSerializer serializer = new JavaScriptSerializer();
      var viewData = new {...};
      return JavaScript( "open('" + serializer.Serialize(viewData) + "')" );          
}

Depending on how your client side open method works you may need to send the json data as a json object instead of a string by simply removing the ' around the method argument.

answered Aug 22, 2010 at 8:41

Jesper Palm

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1 Comment

user385411 Over a year ago

I removed the ' around the method argument and this effectively worked. Thank you so much for your help

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