How to get wotkforceid from this below code

Question

Hi I am posting Image in Workforce ID Here

 

function UploadPic() {

debugger;

// generate the image data

var canvas = document.getElementById("canvas");

var dataURL = canvas.toDataURL("image/png");

var WorkforceID = document.getElementById("lblid");

// Sending the image data to Server

$.ajax({

type: 'POST',

url: "baseimg.aspx",

data: { imgBase64: dataURL }, WorkforceID1: { WorkforceID: "WorkforceID" },

success: function ()

 

I get Image details from below code but WorkforceID i get Null Value Hi I can get WorkforceID from this ajax post 

 

StreamReader reader = new StreamReader(Request.InputStream);

String Data = Server.UrlDecode(reader.ReadToEnd());

string WorkforceID = Request.Form["WorkforceID"];

reader.Close();