json in asp.net with c#

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Hai all ,

Am getting an error in my function in the place of json. Am i want to include any namespace for that?? Can anyone help me???

public  object ProductImage(string qqfile)
    {

        string imagename = "";
        string filename = "";
        var file = string.Empty;
        try
        {
            var stream = Request.InputStream;
            if (String.IsNullOrEmpty(Request["qqfile"]))
            {
                // IE				
               HttpPostedFileBase postedFile = Request.Files[0];
               stream = postedFile.InputStream;
                imagename =RemoveSpecialChars(DateTime.Now.ToString()) + System.IO.Path.GetFileName(Request.Files[0].FileName);
                filename = System.IO.Path.GetFileName(Request.Files[0].FileName);
                file = Path.Combine(Server.MapPath("~/Uploads"), imagename);
            }
            else
            {
                //Webkit, Mozilla				
                imagename = RemoveSpecialChars(DateTime.Now.ToString()) + qqfile;
                filename = qqfile;
                file = Path.Combine(Server.MapPath("~/Uploads"), imagename);
            }

            var buffer = new byte[stream.Length];
            stream.Read(buffer, 0, buffer.Length);
            System.IO.File.WriteAllBytes(file, buffer);

        }
        catch (Exception ex)
        {
            return Json(new { success = false, message = ex.Message }, "application/json");
        }

        return Json(new { success = true, imagename = imagename, correctname = filename }, "text/html");

while executing this code am getting an error like this

The name Json does not exist in the current context

Posted 29-Jul-13 18:58pm

Aswathi Narayan

Updated 29-Jul-13 20:08pm

v2

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Ankur^\m/ 30-Jul-13 1:03am

You need to mention "what" error you are getting. Remember we cannot see your machine or read your mind.

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ridoy · Answer 1 · 2013-07-29T19:10:00

Solution 1

See these..
http://stackoverflow.com/questions/14828520/how-to-create-my-json-string-by-using-c[^]
http://stackoverflow.com/questions/1056121/how-to-create-json-string-in-c-sharp[^]

Posted 29-Jul-13 19:10pm

ridoy

Ankur^\m/ · Answer 2 · 2013-07-29T20:34:00

You are getting this error because there isn't Json class available in .Net framework and do you don't seem to have created a class with that name in your project or the assemblies you have referenced.

It seems you are trying serialize the data in Json format. Your options are:
i) Just return a string which is in Json format. So you will have to change your return statement to valid Json string (name value pair).
ii) Use a Json library to serialize/de-serialize you string to Json objects. One such library is Json.NET[^]

Hope that helps!