ASP.NET Web Method that accepts a List is failing with “Web Service method name is not valid.”

Question

I want to create a web method that accepts a List of custom objects (passed in via jQuery/JSON).

When I run the website locally everything seems to work. jQuery an

Answer 1

Have to say, I am not 100% sold my answer is (all) the issue, BUT this would address the deserialization. Adding some detail for your specific object.

on client side:

function itemObject (objectTitle,  objectDescription ,objectValue )
{
    this.ObjectTitle  = objectTitle,;
    this.ObjectDescription  = objectDescription ;
    this.ObjectValue  = objectValue ;
}; 

//  4 objects in source-fix for your list
function objRow()
{
    this.myCode = myCode;
    this.myCodeText = myCodeText;
    this.customObjectList  = new Array();
    for (k = 0; k < 4; k++)
    {
        this.customObjectList [k] = new itemObject (sourceTitle[k],sourceDescription[k],sourceValue[k]);
    };
};
var myCode = "hicode1";
var  myCodeText = "hicodeText1";
$(function()
{
   function SaveCurrentObjects()
    {
         var currentSet = new objRow();
        var objectData = "";
        var testData = {objectSaveData : currentSet };
        objectData = JSON.stringify(testData);

        SaveObjectsData(objectData );
    };

    /* save the objects */
    function SaveObjectsData(objectSaveData)
    {
        $.ajax({
            type: "POST",
            contentType: "application/json; charset=utf-8",
            data: objectSaveData,
            dataFilter: function(data)
            {
                var msg;
                if (typeof (JSON) !== 'undefined' &&
                typeof (JSON.parse) === 'function')
                    msg = JSON.parse(data);
                else
                    msg = eval('(' + data + ')');
                if (msg.hasOwnProperty('d'))
                    return msg.d;
                else
                    return msg;
            },
            url: "/manageobjects.asmx/EditCustomObjects", 
            success: function(msg)
            {
               //do stuff
            },
            failure: function(msg)
            {
               //handlefail
            }
        });
    };

});

---

on server side you would have:(exact name of "objectSaveData") as in client code.

[WebMethod]
public static string EditCustomObjects(ObjectData objectSaveData)
{
   // code to save your object
   return "saved objects";
}

create a ObjectData class cointaining a list of objectItem similar to my other example matching up the objects (careful of names).

NOTE: I have the ASP.NET ajax extensions installed - working with asp.net 2.0 code for this example.

Answer 2

Maybe the path you are passing with jquery does not exist try to see the response using FireBug.

Answer 3

This is a wrong declaration in javascript.

var itemObject = { 
  ObjectTitle = objectTitle,
  ObjectDescription = objectDescription,
  ObjectValue = objectValue
}

Correct object initialization should be:

var itemObject = { 
  ObjectTitle : objectTitle,
  ObjectDescription : objectDescription,
  ObjectValue : objectValue
};

Also try temporary removing async: false from $.ajax's parameters.

Answer 4

Alright, here's how it is for an object, just tested this: ============================================ASPX==================================

        $("#btngeMethodCallWithAnObjectAsAParameter").click(function (event) {

            $.ajax({
                type: 'POST',
                url: 'Default.aspx/PageMethodCallWithAnObjectAsAParameter',
                data: '{"id":"' + '5' + '", "jSonAsset":' + JSON.stringify(new BuildJSonAsset()) + '}',
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (msg) {
                    if (msg.d) {
                        alert(msg.d);
                    }
                },
                error: function () {
                    alert("Error! Try again...");
                }
            });

        });
    });


    function BuildJSonAsset() {
        this.AssetId = '100';
        this.ContentId = '200';
        this.AssetName = 'Asset1';
    }

========================================================================

[WebMethod()]
public static string PageMethodCallWithAnObjectAsAParameter(int id, JSonAsset jSonAsset)
{
    return "Success!";
}

======================================================================

And this works for a single object, next I am going to try a list of objects:)