Question

I’m tryint to post to a ADO.NET Data Service but the parameters seems to get lost along the way.

I got something like:

[WebInvoke(Method='POST')] public int MyMethod(int foo, string bar) {...} 

and I make an ajax-call using prototype.js as:

var args = {foo: 4, bar: ''test''}; new Ajax.Requst(baseurl + 'MyMethod',   method: 'POST',   parameters: args,   onSuccess: jadda,   onFailure: jidda } 

If I replace ‘method: ‘POST” with ‘method: ‘GET” and ‘WebInvoke(Method=’POST’)’ with ‘WebGet’ everything works but now (using post) all I get is:

Bad Request – Error in query syntax.

from the service.

The only fix (that I don’t want to use) is to send all parameters in the URL even when I perform a post. Any ideas are welcome.

Answer 1

WCF and ASMX webservices tend to be a bit choosey about the request body, when you specify args the request is usually encoded as a form post i.e. foo=4&bar=test instead you need to specify the javascript literal:-

   new Ajax.Request(baseurl + 'MyMethod', {         method: 'POST',         postBody: '{'foo':4, 'bar':'test'}',         encoding: 'UTF-8',         contentType: 'application/json;',         onSuccess: function(result) {             alert(result.responseJSON.d);          },         onFailure: function() {             alert('Error');         }     });