Save WebCam Captured image in Directory in ASP.Net MVC

there is no alert to success

$("#btnUpload").click(function () {
    $.ajax({
        type: "POST",
        url: "/Home/SaveCapture",
        data: "{data: '" + $("#imgCapture")[0].src + "'}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (r) { alert("upload press"); }
    });
});