Re: namespace?
- From: "Scott M." <smar@xxxxxxxxxxxxx>
- Date: Tue, 15 Jan 2008 13:22:31 -0500
A "namespace" looks like a URL, but it is not. In this case "tempuri"
stands for "temporary URI", meaning that it is dummy data that you are
supposed to change.
Namespaces are used in XML (which is the format that your web service
sends/receives data) to organize/group XML tags and attributes. This is
conceptually the same as how namespaces are used in .NET - - to
organize/group classes. The difference being that in .NET, the syntax uses
dot notation (i.e. System.Web.UI) and in XML, namespaces use URI (uniform
resource indicators), such as "http://www.something.com";. Although they
look like URL's, they are not and they are not meant to be resolved - - they
are just names that you make up to keep your XML tags and attributes used by
your web service organized and marked as belonging to you.
Generally, an XML namespace should start with the ACTUAL URL of your
company/organization, but again, not so that they can be browsed to, but
because it is highly unlikely that anyone else on the planet would start
their XML namespaces with your company/organization URL. After the
beginning of the URL, you generally add something else that defines what
your web serivice is. For example, my company is Technical Training
Solutions and my URL is http://TechTrainSolutions.com. If I were making a
web service that retrieves course ID's from a database, I might use the
following to indicate that all the xml coming back from the service be
"grouped" in the same namespace.
<System.Web.Services.WebService(Namespace:="http://www.TechTrainSolutions.com/services/courseID";)>
After adding such a namespace, you'll be able to actually see it used when
you examine the results of your web service call. You'd see something like
this:
<string
xmlns="http://www.TechTrainSolutions.com/services/courseID";>012-4A</string>
Hope this helps.
-Scott
"cj" <cj@xxxxxxxxxxxxx> wrote in message
news:usFByT5VIHA.1184@xxxxxxxxxxxxxxxxxxxxxxx
I'm still not getting this. Namespace:="http://tempuri.org/"; looks like a
web address and I've opend it but don't understand what it's saying. Can
you try again to explain what a namespace does and why my web service
needs to refer to one?
Also I think this has something to do with the WebMethodAttribute that we
are discussing in my other post. Am I correct?
Steven Cheng[MSFT] wrote:
Hi Cj,
As for the following attribute:
<System.Web.Services.WebService(Namespace:="http://tempuri.org/";)> It is
used to describe and decorate your webservice service class(applied on
class level). Certainly, you can use the same one for C# code, they're
the same. Also you can find more properites(that you can set on this
attribute for your service class): #WebServiceAttribute Class
http://msdn2.microsoft.com/en-us/library/system.web.services.webserviceattri
bute.aspx
In addition, to better understand its usage, you can visit the service's
WSDL document (view through yourservice.asmx?WSDL url). Change the
attribute setting and refresh the WSDL document to see the changes.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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--------------------
Date: Fri, 11 Jan 2008 15:07:05 -0500
From: cj <cj@xxxxxxxxxxxxx>
User-Agent: Thunderbird 2.0.0.6 (Windows/20070728)
Subject: namespace?
Newsgroups: microsoft.public.dotnet.framework.webservices
What does the line
<System.Web.Services.WebService(Namespace:="http://tempuri.org/";)> _
do in the example below?
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.ComponentModel
' To allow this Web Service to be called from script, using ASP.NET AJAX,
uncomment the following line.
' <System.Web.Script.Services.ScriptService()> _
<System.Web.Services.WebService(Namespace:="http://tempuri.org/";)> _
<System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1
_1)> _
<ToolboxItem(False)> _
Public Class Service1
Inherits System.Web.Services.WebService
<WebMethod()> _
Public Function HelloWorld() As String
Return "Hello World"
End Function
End Class
And why don't I see a similar line in the C# example at
http://dotnetjunkies.com/Tutorial/4D13CEFA-D0FD-44BE-8749-8D17B5757564.dcik
?
.
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