Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Understand web service better

Posted on 2011-09-07
5
Medium Priority
?
230 Views
Last Modified: 2012-05-12
Hi although I used web service a lot of times, but to be honest,I still can't clearly figure out the real meaning of "web service"

For ex,
 [WebMethod]
    public string HelloWorld(string yourName) {
        return string.Format("Hello {0}",yourName);
    }

Open in new window

If without [WebMethod]
The program still can return the string, so what is the difference?
0
Comment
Question by:zhshqzyc
  • 3
  • 2
5 Comments
 
LVL 5

Expert Comment

by:eridanix
ID: 36496115
Hi,

good explanation of [WebMethod] attribute is under the link http://oreilly.com/catalog/prognetws/chapter/ch02.html

Search the "The WebMethod attribute", It's on more parts of page.
0
 

Author Comment

by:zhshqzyc
ID: 36496748
My question is not how to use [WebMethod].
It is WebService vs Regualr Service.

So
[WebMethod]
    public string HelloWorld(string yourName) {
        return string.Format("Hello {0}",yourName);
    } 

Open in new window

run at server?
    public string HelloWorld(string yourName) {
        return string.Format("Hello {0}",yourName);
    } 

Open in new window

run at local?
0
 
LVL 5

Expert Comment

by:eridanix
ID: 36502957
Yes

The [WebMethod] attribute means, that you want the method exposed as part of the XML Web service.

Without this parameter, you can use method only inside of web service, but cannot call it from other application, which is using your WebService.
0
 

Author Comment

by:zhshqzyc
ID: 36502995
A follow up silly question, since we can embed the method into an application, why we need call it from the server?

Please use an example to explain it? For example, Hello World can be run on the local machine.
0
 
LVL 5

Accepted Solution

by:
eridanix earned 2000 total points
ID: 36503073
So, why do you create Web Service (in this meaning http://msdn.microsoft.com/en-us/library/ms972326.aspx)
and not create only classic method right in your application?

Web services are usefull only if you want to access to it from other application or applications (and maybe from other server).


[WebMethod]
    public string HelloWorld(string yourName) {
        return string.Format("Hello {0}",yourName);
    }
- this method is part of ASP.NET Web Service and can be call remotely

public string HelloWorld(string yourName) {
        return string.Format("Hello {0}",yourName);
    }
- this is classic method and can be call only within its application (in class or by instances of this class, or in inherited classes by interfaces)
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In previous Articles, we have discussed how we can upload a file using .asmx web service and isolated storage space. Here, in continuation to the topic, I am going to discuss how we can use WCF for the same purpose. Steps: 1.Create the silverli…
Here I am going to explain creating proxies at runtime for WCF Service. So basically we use to generate proxies using Add Service Reference and then giving the Url of the WCF service then generate proxy files at client side. Ok, what if something ge…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses

876 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question