Consuming a WSDL Webservice

This example application uses the 123aspx.com webservice as an example. I'll be using the following three files to demonstrate consuming this service from ASP:

Programming with Web Services Enhancements 1.0 for Microsoft .NET

Web Services Enhancements 1.0 for Microsoft .NET, or WSE, is a new .NET class library for building Web services using the latest Web services protocols, including WS-Security, WS-Routing, DIME, and WS-Attachments. WSE integrates with ASP.NET Web services, offering a simple way to extend their functionality. This paper explores the architecture of WSE and explains how to use it to build a simple Web service. But before I get into the details, let me provide a little background and make some obser

Create and Consume Web Services at Server and Client

Web Services, as known as XML Web Services, are units of application logic that provide data and services to other applications using Internet (or Intranet). Applications access Web Services via different kinds of Web protocols and data formats such as XML, with no need to worry about how Web Services are implemented. They can be implemented for any operation system that supports communication over the Internet and Intranet. They are the cornerstones of the Microsoft .NET programming model.

Sharing Types

This column addresses a common problem with Microsoft® Visual Studio® .NET Web service development: sharing data types across Web services. This issue arises when a developer creates a set of Web services with what appears to be well-thought-out portTypes and data types. Then, things quickly go awry when creating a client for that Web service. How? Two Web services use the exact same type. When developing the client, the developer dutifully uses "Add Web Reference" to create the proxies. Sprin

Consuming XML Web Services with FrontPage

One of the most exciting aspects of the Microsoft® .NET Framework is the inclusion of Extensible Markup Language (XML) Web services. A Web service allows for applications to communicate and exchange information in a standards-based manner. Microsoft's implementation of Web services has many inherent benefits. The information is exchanged in XML format, using Hypertext Transfer Protocol (HTTP) and Transmission Control Protocol/Internet Protocol (TCP/IP). Therefore, Web services use existing infr

Exposing Stored Procedures as Web Services, and More

I've been hearing a lot about WS-I in the press and I still can't figure out how it differs from the W3C. Can you explain its role? A WS-I stands for the Web Services Interoperability Organization, a new industry consortium whose goal is to promote interoperability across Web Services implementations. The WS-I was announced in February of this year. Founding members include Microsoft®, IBM, Intel, Oracle, SAP, HP, BEA Systems, Fujitsu, and Accenture. The founding members have already been jo

Calling Secure Web Services

Add security to your Web services-based Microsoft eMbedded Visual Basic applications for Pocket PC as you step through some sample code. Web Service Security Security is a wide subject, but when it comes to Web Services security there are basically three main dimensions of security: * Authentication * Confidentiality and Integrity * Availability Authentication is the process of verifying that someone (or something) is who they claim to be. Authentication requires eviden

The Rise of Web Services

We've made it - the whole concept of Web Service is taking off. Certain companies have already taken the plunge and have joined support and development groups in an effort to standardize Web Service Description Languages, while others are concentrating on hosting and referencing primary services. Here's how XML, SOAP and, more recently, UDDI and WSDL are making this possible.

Content Editor & Web Service

In this article I'll show how to enhance the previous "Web-Based Content Editor" with the ability to send the content to the server (using IE5 Web Service Behaviour) and how a Web Service can be built on the server side to receive the content and do some processing. Try the online demo below. The process on the server will receive the content you've created and then send it to my email.

XML Web Services: Part 2

Please make sure that you have read XML Web Services: Part 1: Overview and database interaction and XML Web Services: Part 2: Consumption through ASP.NET as this example builds on the previous examples and code. One of the great features of .NET is the ease with which data from a Web Service can be integrated into environments such as mobile devices. Using the Mobile Toolkit and the Web Service from our previous examples, you can easily make your data available to WAP/WML devices. First, a

XML Web Services: Part 3: Using with WML

Please make sure that you have read XML Web Services: Part 1: Overview and database interaction and XML Web Services: Part 2: Consumption through ASP.NET as this example builds on the previous examples and code. One of the great features of .NET is the ease with which data from a Web Service can be integrated into environments such as mobile devices. Using the Mobile Toolkit and the Web Service from our previous examples, you can easily make your data available to WAP/WML devices. First, a

XML Web Services: Part 4: Flash XML Integration

With the tools .NET provides the developer, enabling other XML applications from a Web Service is pretty easy, and together with an application like Flash 5, can really be a nice aid in functionality. While this article focuses more on how to get access to the XML stream sent from a Web Service, it will also give a brief introduction to how Flash works with XML. When viewing the example at the end of the article make sure you have Player 5 or Player 6. The example updates a Flash 5 movie whic

XML Web Services: Overview and database interaction

The .NET Framework makes creating and consuming XML Web Services easy, allowing developers to bring added functionality to their applications and services almost overnight. This tutorial will provide you with an introduction to Web Services and .NET, and show you how to create a Web Service which retrieves information from a database (Part 2 will show you how to consume the service through an ASP.NET page). First a quick overview on Web Services and .NET: * A Web Service is a program (

Invoking Web Services with Visual Basic .NET

A Web Service is an application that exposes a Web-accessible API. By exposing Web-accessible APIs, Web Services can enable new types of highly integrated software solutions. Today, the solutions you build usually contain components that encapsulate some functionality such as database access (ADO) and XML parsing (MSXML). Tomorrow, some of the solutions you build might invoke Web Services to gain access to content or perform a business function outside the boundaries of the server or server farm

Customize Your .NET Web Service

Using .NET, you can easily build services and test them using the automatically generated test page. .NET does a lot for you to make this happen, including automatically generating a WSDL document that clients can use to understand your service's interface. Sometimes it is necessary to customize this WSDL document for a variety of reasons to better suit your needs. This is the first in a series of articles showing you how to customize your .NET Web Service and the auto-generated WSDL. You can

The DataSet Object: At Your Web Service

XML seems destined to provide the fundamental enabling glue among computer systems in our increasingly distributed, interconnected world. Microsoft, a key player in this emerging market of Web services, has bet its future on the ambitious .Net framework and is putting XML squarely in the center of its efforts to make it easier to connect devices ranging from the lowly PDA to the mighty mainframe. To help transport XML data between components in this new framework, Microsoft provides the DataS

Increase Web Service Performance

It's simple to program a Web Service that supports 10 users; it's a challenge to build one that supports 10,000. When faced with performance issues, most developers opt for additional hardware capacity. This choice ignores an important premise: Performance has more to do with software code than hardware capacity. In this column, I'll show you how to improve performance by building a Web Service that uses the ASP.NET Application object as a data cache. You'll build a C# Web Service that conver

Use Objects and Intrinsics

This sample illustrates how to access ASP.NET intrinsics such as the Session and Application objects. It also shows how to turn off Session on a per-[WebMethod] basis. The first method in the sample .asmx file, UpdateHitCounter, accesses the Session and adds 1 to the "HitCounter" value. It then returns this value as a String. The second method, UpdateAppCounter does the same thing, but with the Application. Notice the following:

Write a Simple Web Service

You can write a simple XML Web service in a few minutes using any text editor. The service you will create in this section, MathService, exposes methods for adding, subtracting, dividing, and multiplying two numbers. At the top of the page, the following directive identifies the file as a XML Web service in addition to specifying the language for the service (C#, in this case). <%@ WebService Language="C#" Class="MathService" %> In this same file, you define a class that encapsulates the f

Use Data in XML Web services

This sample shows how DataSets, a powerful new XML-based way to represent disconnected data, can be returned from a Web Service method. This is an extremely powerful use of XML Web services, as DataSets can store complex information and relationships in an intelligent structure. By exposing DataSets through a service, you can limit the database connections your data server is experiencing. The method GetTitleAuthors connects to a database and issues two SQL statements: one that returns a list