{"Message":"Invalid web service call, missing value for parameter: \u0027name\u0027.","StackTrace":" at System.Web.Script.Services.WebServiceMethodData.CallMethod(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.InvalidOperationException"}

function SetSession() {
            var name1 = document.getElementById("<%=txtDate.ClientID%>").value;
            var name2 = document.getElementById("<%=txtEntityID.ClientID%>").value;
            var name3 = document.getElementById("<%=txtEmail.ClientID%>").value;
            var name4 = document.getElementById("<%=txtSSN.ClientID%>").value;
            var name5 = document.getElementById("<%=txtAddressLine1.ClientID%>").value;
            var name6 = document.getElementById("<%=txtAddressLine2.ClientID%>").value;
            var name7 = document.getElementById("<%=txtHeadName.ClientID%>").value;
            var name8 = document.getElementById("<%=txtLandlordName.ClientID%>").value;
            var name9 = document.getElementById("<%=txtLandlordPhone.ClientID%>").value;
            var name10 = document.getElementById("<%=txtPhone.ClientID%>").value;
 
            var ctx = document.getElementById('cnv').getContext('2d');
            var name11 = ctx;
            var img = new Image();
            var obj = null;
 
            var image = document.getElementById("cnv").toDataURL("image/png");
            image = image.replace('data:image/png;base64,', '');
 
            $.ajax({
                type: 'POST',
                url: "Default.aspx/SetSession",
                data: '{ "imageData" : "' + image + '" }',
                contentType: 'application/json; charset=utf-8',
                dataType: 'json',
                success: function (msg) {
                    alert('Image saved successfully !');
                },
                error: function (msg) {
                    alert(msg.responseText);
                }
            });
 
            var name = name1 + ";" + name2 + ";" + name3 + ";" + name4 + ";" + name5 + ";" + name6 + ";" + name7 + ";" + name8 + ";" + name9 + ";" + name10 + ";" + image;
            var request;
            if (window.XMLHttpRequest) {
                //New browsers.
                request = new XMLHttpRequest();
            }
            else if (window.ActiveXObject) {
                //Old IE Browsers.
                request = new ActiveXObject("Microsoft.XMLHTTP");
            }
            if (request != null) {
                var url = "Default.aspx/SetSession";
                request.open("POST", url, false);
                var params = "{name: '" + name + "'}"; // + "," + "{name: '" + name2 + "'}";
                request.setRequestHeader("Content-Type", "application/json");
                request.onreadystatechange = function () {
                    if (request.readyState == 4 && request.status == 200) {
                        alert(JSON.parse(request.responseText).d);
                    }
                };
                request.send(params);
            }
        }
 

[System.Web.Services.WebMethod(EnableSession = true)]
public static string SetSession(string name)
{
    HttpContext.Current.Session["Name"] = name;
    string[] values = name.Split(';');
 
    string str = name;
    var result = from s in str.ToLowerInvariant().Split(new char[] { ';' })
                 select s;
 
    string sMoQ = values[10];
    string imageData = values[10];
    string strUploadDestinationK = ConfigurationManager.AppSettings["UploadDestinationK"].ToString();
    string fileNameWitPath = @strUploadDestinationK + DateTime.Now.ToString().Replace("/", "-").Replace(" ", "- ").Replace(":", "") + ".png";
    using (FileStream fs = new FileStream(fileNameWitPath, FileMode.Create))
    {
        using (BinaryWriter bw = new BinaryWriter(fs))
 
        {
            byte[] data = Convert.FromBase64String(sMoQ);
            bw.Write(data);
            bw.Close();
        }
    }
 
    string[] stringarr;
    stringarr = values; 
 
    string str1 = values[0];
    string str2 = values[1];
 
    string sDate = values[0];
    string sEntityID = values[1];
    string sID = values[1];
    string sEmail = values[2];
    string sSSN = values[3];
    string sAddressLine1 = values[4];
    string sAddressLine2 = values[5];
    string sHeadName = values[6];
    string sLandlordName = values[7];
    string sLanllordPhone = values[8];
    string sPhone = values[9];
  
    string sTemp = GetImageSession();
 
    Document document = new Document(PageSize.LETTER, 100f, 100f, 10f, 10f);
    iTextSharp.text.Font NormalFont = FontFactory.GetFont("Arial", 12, iTextSharp.text.Font.NORMAL, BaseColor.BLACK);
 
    using (System.IO.MemoryStream memoryStream = new System.IO.MemoryStream())
    {
        PdfWriter writer = PdfWriter.GetInstance(document, memoryStream);
        Phrase phrase = null;
        PdfPCell cell = null;
        PdfPTable table = null;
        BaseColor color = null;
 
        document.Open();
 
        table = new PdfPTable(2);
        table.TotalWidth = 550f;
        table.LockedWidth = true;
        table.SetWidths(new float[] { .3f, 2.3f });
 
        cell = ImageCell("~/images/FormLogo2.png", 60f, PdfPCell.ALIGN_CENTER);
        table.AddCell(cell);