1. CS 3870
Web Service

2. Web Service What is Web Service?
Providing functionality online to other applications, Web or Windows applications.
The original Goal of MS ASP.NET
To enable developers to build and consume Web services with easy

3. Communication Between Disparate Systems
Systems within an organization
Unix
Windows
Mac
Others
Various systems need to talk with one another
Not an easy job

4. XML and SOAP XML: eXtensible Makeup Language SOAP
Simpler version of SGML
(Standard Generalized Makeup Language)
Best choice for disparate systems for now
SOAP
Simple Object Access Protocol

5. Previous Attempts DCOM Distributed Component Object Model RMI
Remote Method Invocation
CORBA: . . .
IIOP: . . .
Driven by a single vendor or
Very vendor specific

6. .NET Framework 4.6 Right click the main Web site Select Property Pages
Build
.NET Framework 4.6

7. Creating Web Service Add New Items Web Service (ASMX)
Specify Name: UWPCSSEWebService2018
File UWPCSSEWebService2018.asmx
Inside the main Web site
File UWPCSSEWebService2018.cs
Inside App_Code

8. WebService Page Directive
File UWPCSSEWebService2018.asmx
WebService Language=“C#"
CodeBehind="~/App_Code/UWPCSSEWebService2018.cs"
Class=“UWPCSSEWebService2018" %>

9. Web Service Class (C# File)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
/// <summary>
/// Summary description for UWPCSSEWebWebService2018
/// </summary>
[WebService(Namespace = "
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the
// following line.
// [System.Web.Script.Services.ScriptService]
public class UWPCSSEWebWebService2018 : System.Web.Services.WebService {
public UWPCSSEWebWebService2018()
//Uncomment the following line if using designed components
//InitializeComponent(); }
[WebMethod]
public string HelloWorld()
return "Hello World";

10. Web Service Class Web Service Namespace Default : http://tempuri.org/
Change to:

11. Web Service Class
public class UWPCSSEWebWebService2018 : System.Web.Services.WebService {
//Initialize Products in table.
public UWPCSSEWebWebService2018()
SQLDataClass.getAllProducts(); }
[WebMethod]
public string HelloWorld()
return "Hello World";

12. Four More Methods [WebMethod]
public System.Data.DataTable WS_GetAllProducts()
public void WS_UpdateProduct(string ID, string newName,
double newPrice, string newDescription)
public void WS_InsertProduct(string ID, string name, double price,
string description)
public void WS_DeleteProduct(string ID)

13. Looking at Web Service
???

14. SOAP
All Web Methods
SOAP Envelop
SOAP Body

15. Completing Web Methods
public class UWPCSSEWebWebService2018 : System.Web.Services.WebService {
[WebMethod]
public System.Data.DataTable WS_GetAllProducts()
public void WS_UpdateProduct(string ID, string newName,
double newPrice, string newDescription)
public void WS_InsertProduct(string ID, string name,
double price, string description)
public void WS_DeleteProduct(string ID) }
Call methods of SQLDataClass
Make sure method setupAdapter is called

16. Consuming Web Service Adding Web Reference
Invoking Web Service from client application

17. Adding Web Reference Right click the root of the Web Site
Add Service Reference
Enter the URL of the wanted web service followed by “?WSDL” Go
Namespace
WebServiceCS3870 OK

18. Required Three Web References
Service Reference to the Web Service created on Web site CS3870
Service Reference to the Web Service created on Web site YangQ
Service Reference to the Web Service created on your Web site

19. The Web Config file will be updated automatically with the following.
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="UWPCSSEWebService2018Soap">
<security mode="Transport" />
</binding>
<binding name="UWPCSSEWebService2018Soap1" />
</basicHttpBinding>
</bindings>
<client>
<endpoint address="
binding="basicHttpBinding" bindingConfiguration="UWPCSSEWebService2018Soap"
contract="CS3870.UWPCSSEWebService2018Soap" name="UWPCSSEWebService2018Soap" />
</client>
</system.serviceModel>

20. Selecting Web Services on Form Default.aspx
//Sets the webservice to the selected in the dropdown list.
protected void DropDownList1_SelectedIndexChanged(. . .) {
var ws = DropDownList1.Text;
object obj;
if (ws == "CS3870")
obj = new
WebServiceCS3870.UWPCSSEWebService2018SoapClient();
else if (ws == "YangQ")
WebServiceYangQ.UWPCSSEWebService2018SoapClient();
else
WebServiceWebSite.UWPCSSEWebService2018SoapClient();
. . . }

21. protected void DropDownList1_SelectedIndexChanged(. . .){
var ws = DropDownList1.Text;
object obj;
if (ws == "CS3870")
. . .
Session["Prog9_WS"] = obj;
Session["Prog9_WSName"] = obj.ToString();
Session["Prog9_PageIndex"] = 0;
Session["Prog9_RecordIndex"] = 0;
Session["Prog9_UnitPrice"] = 0;
Session["Prog9_Index"] = 0;
Session["Prog9_ID"] = "";
SetLabelText(); }

22. Prog9MasterPage
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <h3 class="centerAlign">Prog 9: <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </h3> <asp:TreeView ID="TreeView1" runat="server" > </asp:TreeView> <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" /> <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"> </asp:ContentPlaceHolder> </asp:Content>

23. Display the selected Web Service name
Session["Prog9_WS"] = obj;
Session["Prog9_WSName"] = obj.ToString();
string ws = Session["Prog9_WSName"].ToString();
Control c = Master.Master.FindControl("form1");
c = c.FindControl("ContentPlaceHolder1");
c = c.FindControl("Label1");
((Label)c).Text = ws;

24. Invoking Web Methods on Form AllProducts.aspx
protected void Page_Load(object sender, EventArgs e) {
var obj = Session["Prog9_WS"];
if (obj == null)
Response.Redirect("~/Prog9/Default.aspx");
System.Data.DataTable myTable;
if (obj.ToString().Contains("YangQ"))
myTable = ((WebServiceYangQ.UWPCSSEWebService2018SoapClient)obj).WS_GetAllProducts();
else if (obj.ToString().Contains(“UserName"))
myTable =
((WebServiceUserName.UWPCSSEWebService2018SoapClient)obj).WS_GetAllProducts();
else
((WebServiceCS3870.UWPCSSEWebService2018SoapClient)obj).WS_GetAllProducts();
GridView1.DataSource = myTable;
if (!IsPostBack)
GridView1.PageIndex = (int)Session["Prog9_PageIndex"];
GridView1.DataBind(); }

25. Must Set to Tls12 protected void Page_Load(object sender, EventArgs e){
. . .
System.Net.ServicePointManager.SecurityProtocol =
System.Net.SecurityProtocolType.Tls12;
((WebServiceCS3870.UWPCSSEWebService2018SoapClient)obj).
WS_GetAllProducts(); }

26. try { var obj = Session["Prog9_WS"]; if (obj. ToString()
try { var obj = Session["Prog9_WS"]; if (obj.ToString().Contains("YangQ")) ((WebServiceYangQ.UWPCSSEWebService2017SoapClient)obj). WS_InsertProduct (ProductID, ProductName, double.Parse(UnitPrice), Description); else if (obj.ToString().Contains("DubielT")) ((WebServiceDubielT.UWPCSSEWebService2017SoapClient)obj). else ((WebServiceCS3870.UWPCSSEWebService2017SoapClient)obj). txtMsg.Text = "Record Inserted"; } catch(Exception ex) txtMsg.Text = ex.Message;

27. Accessing Database Using Web Service
No Credit if Accessing Database without Web Service

28. Session Variables Need to be Created and Updated
Name starting using “Prog9_”

29. Delete and Create Service Reference?
Not Working
Delete and Create Service Reference?

30. AJAX
All Web Forms except Default.aspx Should have multiple UpdatePanels on one Web form.