[wdvltalk] Re: c#, xml, SOAP, etc

[Howard Cheng]

Is there any particular reason for using SOAP here? Because it's an awfully complex way of just querying the database. We recently finished a project here where the network architecture necessitated the use of a web service and SOAP -- the web servers were in a DMZ with the database behind a second firewall, so the only access was via a web service which sat on the same LAN as the database. If you just have a direct connection to your database without firewalls blocking you, there's no reason to be using SOAP to transfer XML data.

But if you do need to go with it, you actually don't need to learn anything in particular about SOAP itself. ASP.NET will take care of wrapping your objects for you. You would just have something like:

WEB SERVICE:

public class MyWebService : System.Web.Services.WebService
{
[WebMethod]
public XmlDocument GetContentXml(int id)
{
// query database

// generate XmlDocument
XmlDocument xml = new XmlDocument();
// etc

return xml;
}
}

ASPX page:

public class MyPage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
MyWebService service = new MyWebService();
XmlDocument xml = service.GetXml(id);
// etc
}
}

Of course it's a lot more involved than this little example, but you can see that I didn't touch SOAP at all -- I just had my web service return an XmlDocument object and then used it in my ASPX page.

Books ... I myself used Wrox's _Professional ASP.NET_, but its focus is on VB.NET, so to learn the language, I got O'Reilly's _Programming C#_.

HTH.

At 05:14 PM 1/16/2003 +0000, Ben Joyce wrote:

hi all.

just wondering if anyone can recommend a good book for learning how to
build & use SOAP objects in c#/xml.  My idea is that my app/website
(plan to write both) will request data via SOAP.  c# will talk to the
database and return data in XML back to the calling code, where is is
displayed.

I've never used c#, very little XML and not touched SOAP so a good book
is needed!

suggestions appreciated!

Cheers,

 .ben

::::::::::::::::::::::::::::::::::
Howard Cheng
http://www.howcheng.com/
howcheng at ix dot netcom dot com
AIM: bennyphoebe
ICQ: 47319315


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