Question

I am developing a webservice that returns arrays of classes I define within the webservice. When I test it, I get: “System.InvalidOperationException: The type WebSite+HostHeader was not expected. Use the XmlInclude or SoapInclude attribute to specify types that are not known statically.”

Here is part of the code:

[WebService(Namespace = "http://WebSiteInfo.Podiumcrm.com/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class WebSite : System.Web.Services.WebService
{
    public class WebSiteEntry
    {
        public string SiteName = "";
        public string Comment = "";
        public string IISPath = "";
        public int SiteID = 0;
        public ArrayList HostHeaders;

        public WebSiteEntry()
        {
        }
    }
    public class HostHeader
    {
        public string IPAddress = "";
        public int Port = 0;
        public string URL = "";

        public HostHeader()
        {
        }
    }


    [WebMethod(EnableSession = true)]
    [TraceExtension(Filename = @"C:\DotNetLogs\WebSiteServices.log")]
    public WebSiteEntry[] WebSites()
    {...}
}

When I try:

[WebService(Namespace = "http://WebSiteInfo.Podiumcrm.com/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[XmlInclude(typeof(WebSiteEntry))]
[XmlInclude(typeof(WebSiteProperty))]
[XmlInclude(typeof(HostHeader))]

public class WebSite : System.Web.Services.WebService
{...}

I get: “The type or namespace name XmlInclude could not be found (are you missing a using directive or an assembly reference?)”

Points the the person who can give me the incantation that both compiles and executes!

Thanks…

Answer 1

From the error you are receiving:

The type or namespace name ‘XmlInclude’ could not be found (are you missing a using directive or an assembly reference?)

It appears that you are missing the System.Xml.Serialization Namespace. You can fully qualifying the XmlInclude type, like this:

System.Xml.Serialization.XmlInclude(typeof(WebSiteProperty))

or add the namespace via the using directive:

using System.Xml.Serialization