WebService Directive
You can see the first difference between a web service and a web page in the web service file listed in Example 15-2. A normal .aspx file will have a Page
directive as its first line, but a web service has a WebService
directive as reproduced here:
<%@ WebService Language="C#" CodeBehind="~/App_Code/Service.cs" Class="Service" %>
The WebService
directive is required of all web services. Like all directives, it has the following syntax:
<%@ DirectiveName attribute="value" [attribute="value"...]%>
You can have multiple attribute/value pairs. The order of the attribute/value pairs does not matter.
-
Language
The
WebService
directive’sLanguage
attribute specifies the language used in the web service. Legal values includeC#
,VB
, andJS
for C#, VB2005, and Jscript.NET, respectively. The value is not case-sensitive. TheLanguage
attribute is not required. If it is missing, the compiler will deduce the language in use from the extension of the class file.-
Class
The
WebService
directive’sClass
attribute specifies the name of the class implementing the web service. TheClass
attribute is required. The class specified can reside either in a separate code-behind file, or in-line in a script block in the .asmx file.If the web service is developed in VS2005, the code-behind file containing the class will be located in a subdirectory under the application root (where the .asmx file resides) called App_Code. Any code files in a subdirectory with this name will automatically ...
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