Coded the 1st example and can't get past the error on Public string HelloWorld()

I keep getting a compile error "The type or namespace name 'String' cpould not be found (are you missing a using directive or an assebly reference?)

I code VB. What am I missing?

Without seeing your code and if you are using VB, you'll probably want something like the following:

Also, you may be doing a lot of converting because I think most of the book, if not all, uses C#.

-bob

I coded it C# as in the book.

using System.Web.Services;
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
publicclassWebService : System.Web.Services.WebService
{
[WebMethod]
publicstring HelloWorld() {
return"Hello Ajax World!";
}

}

I am now getting a different error:

The following operations are supported. For a formal definition, please review the Service Description.

• HelloWorld

This web service is using http://tempuri.org/ as its default namespace.

Recommendation: Change the default namespace before the XML Web service is made public.

Each XML Web service needs a unique namespace in order for client applications to 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 namespace that you control. For example, you can use your company's Internet domain name as part of the namespace. Although many XML Web service namespaces look like URLs, they need not point to actual resources on the Web. (XML Web service namespaces are URIs.)
For XML Web services creating using ASP.NET, the default namespace can be changed using the WebService attribute's Namespace property. The WebService attribute is an attribute applied to the class that contains the XML Web service methods. Below is a code example that sets the namespace to "http://microsoft.com/webservices/":
C#
[WebService(Namespace="http://microsoft.com/webservices/")]public class MyWebService { // implementation}

I think what you are doing is running the web service and not the Default.aspx page. So, in Visual Studio, right-click on the Default.aspx page and select "Set As Start Page" and then run your project in Visual Studio.

Also, what you list in your post is not an error. This is a testing feature in Visual Studio to test your web service.

Let me know if this helps!

Bob