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();