在某些地方使用了[WebService（Namespace =“ http://tempuri.org/”）]？

Question

I have made a web service that returns names of countries. What my web service returned was

<ArrayOfString>
               <string>Australia</string>
               <string>USA</string>
               <string>UK</string>
</ArrayOfString>

Why we have [WebService(Namespace = "http://tempuri.org/")] ?

I read it is on client side to distinguish nodes. This URL is also not location of web service.

Is it has any use practically ?

Answer 1

Web Services use namespaces to distinguish their types from the types of other services. http://tempuri.org/ is a temporary (hence the name) namespace that should be replaced when put into a live environment. Typically it would consist of a URI representing the source (ie your company's website URL) plus some other indicators to distinguish it from other services in your organization (eg http://www.haansi.org/Companies ).

From MSDN:

An XML Web service should change its default XML namespace before it is made public. Each XML Web service needs a unique XML namespace to identify it so that client applications can distinguish it from other services on the Web. http://tempuri.org/ is available for XML Web services that are under development, but published XML Web services should use a more permanent namespace.

Your XML Web service should be identified by a XML namespace that you control. For example, you could use your company's Internet domain name as part of the XML namespace. Although many XML Web service XML namespaces look like URLs, they need not point to an actual resource on the Web. (XML Web service XML namespaces are URIs.) For XML Web services created using ASP.NET, the default XML namespace can be changed using Namespace property.

Answer 2

The http://tempuri.org is just a placeholder. ie something text/markup/code that can be changed.