Each web service begins as a stateless class with one or more methods that the remote clients call to invoke your code.
BookService is designed to allow remote clients to retrieve information about books provided by the store. The class provides GetBooks() method that returns a DataSet with the full set of books information. It …
The next picture summarizes the web service life cycle. You can find more detail about different kind of specifications used by technology:
1. Design-time tasks:
– The web service consumer finds the web service, either by going directly to the web service URL or by using UDDI server or DISCO file.
Web services are based on open standard and major vendors such as Microsoft, IBM, and Oracle are behind these standards. The next picture shows the web service stack as it exists today:
The web service technology stack
The next table summarizes standards used in the stack:
Standard
Description
UDDI
Used to create business registries …
With web services, you can reuse someone else’s business logic by using just a few lines of code. This technique is similar to what software engineers currently do with libraries of APIs, classes and components. The fundamental difference is that web services can be located remotely on another server and managed by another company.
Web services have …
Two articles How postback events work in ASP.NET and How to handle web control events with AutoPostBack in ASP.NET provide important information about how web control events work in ASP.NET world, but you need to have a strong understating of the page life cycle too. For example when a user changes a control that has the …
Two articles How postback events work in ASP.NET and How to handle web control events with AutoPostBack in ASP.NET provide important information about how web control events work in ASP.NET world, but you need to have a strong understating of the page life cycle too. For example when a user changes a control that has the …
When you create a web page, in ASP.NET world, that includes one or more web controls that are configured to use AutoPostBack, ASP.NET adds a special JavaScript function to the rendered HTML page. This function is named _doPostBack() and when it is called, it triggers a postback sending data back to the web server.
ASP.NET …
How to handle web control events with AutoPostBack in ASP.NET
You can see on the next picture how ASP.NET server controls work. The code in an ASP.NET page is processed on the server and then it is send to the user as ordinary HTML.
The page processing sequence
The most important question in this approach is, how can you create server code that will …
How to use calculated columns with the ADO.NET DataView in VB.NET
Calculated columns are used when you want to represent a value that’s computed using a combination of existing values. You can create a calculated column, by following the next steps:
1. Create DataColumn object by specifying its name and type.
2. Set …
How to use calculated columns with the ADO.NET DataView in C#
Calculated columns are used when you want to represent a value that’s computed using a combination of existing values. You can create a calculated column, by following the next steps:
1. Create DataColumn object by specifying its name and type.
2. Set the Expression …