c# – Invalid JSON primitive in Ajax processing

c# – Invalid JSON primitive in Ajax processing

Just a guess what does the variable json contain after

var json = Sys.Serialization.JavaScriptSerializer.serialize(obj);?

If it is a valid json object like {foo:foovalue, bar:barvalue} then jQuery might not send it as json data but instead serialize it to foor=foovalue&bar=barvalue thus you get the error Invalid JSON primitive: foo

Try instead setting the data as string

$.ajax({
    ...
    data: {foo:foovalue, bar:barvalue}, //note the additional quotation marks
    ...
})

This way jQuery should leave the data alone and send the string as is to the server which should allow ASP.NET to parse the json server side.

Using

data : JSON.stringify(obj)

in the above situation would have worked I believe.

Note: You should add json2.js library all browsers dont support that JSON object (IE7-)
Difference between json.js and json2.js

c# – Invalid JSON primitive in Ajax processing

its working
something like this

data: JSON.stringify({id:x}),