How Get Image From Jason Response Format?

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C#

ASP.NET

webservice

AngularJs

Please Helppppppppp Me ,

i have to deliver my task tomorrow morning :( iam new to angularjs , i created a form for sending data to server(webservice) to save it in my database , i saved image like this

$scope.InsertRecord = function () {
        var filedata;
        var f = document.getElementById('file').files[0], r = new FileReader();
        alert(f.length);
        r.onloadend = function (e) {
            filedata = e.target.result;
            //console.log(filedata.length)
            $.ajax({
                type: "POST",
                url: "service.asmx/insertMethod",
                data: "{'title':'" + $scope.news_title + "','desc':'" + $scope.news_content + "' , 'Img':'" + filedata + "'}",
                contentType: "application/json; charset=utf-8",
                //dataType: "application/json",
                success: function (msg) {
                    alert("Inserting Done");
                },
                error: function (xhr,status,error) {
                    alert("ERROR MESSAGE :" + error);
                }
            });

            ResetValues();
        }
        r.readAsDataURL(f);

now iam retrieved it on jason format and it like this [{Image:{Length:2345}}]

i don't know how to convert to image


please help meeee