Register handler for asmx in class library

Salvatore Rizzo 21

I created in my classlibrary a handler class with webservice interface.

Now I would like to always register it in the classlibrary (not in the web.config)
so that I can call it according to a specific url.
For example: /mywebservice.asmx.

ideas?

AgaveJoe 26,201 Reputation points

2023-02-23T16:01:51.06+00:00

What exactly did you create? An HTTP Handler or an event handler? Can you show us the code so we can have an idea of what you are doing. Also, can you explain the use case?

Salvatore Rizzo 21

This is my webservice present in my class library


namespace MyShop.API
{
    public class WsMyShop : WebServiceBase
    {
        [WebMethod]
        public int SumOfNums(int First, int Second)
        {
            return First + Second;
        }
    }
}

And this is class base:


namespace MyShop.API
{
    public abstract class WebServiceBase : WebService, IHttpHandlerFactory
    {
        private static WebServiceHandlerFactory wshf = new WebServiceHandlerFactory();
        private static MethodInfo coreGetHandlerMethod = typeof(WebServiceHandlerFactory).GetMethod("CoreGetHandler", BindingFlags.Instance | BindingFlags.NonPublic);

        public System.Web.IHttpHandler GetHandler(System.Web.HttpContext context, string requestType, string url, string pathTranslated)
        {
            return (IHttpHandler)coreGetHandlerMethod.Invoke(wshf, new object[] { this.GetType(), context, context.Request, context.Response });
        }

        public void ReleaseHandler(System.Web.IHttpHandler handler)
        {
        }
    }
}

Lan Huang-MSFT 25,556 Reputation points Microsoft Vendor

2023-02-24T05:22:15.1633333+00:00

Hi @Salvatore Rizzo,

You have to register it in web.config, but it won't prevent you from calling with url, you can refer to this post.
Salvatore Rizzo 21 Reputation points

2023-02-24T12:02:02.2966667+00:00

And only in the web.config can I register the handler?
Lan Huang-MSFT 25,556 Reputation points Microsoft Vendor

2023-02-27T08:33:44.07+00:00

Hi @Salvatore Rizzo,

You can check the description of the related documentation:How to: Register HTTP Handlers

After you have created a custom HTTP handler class, you must register it in the Web.config file.

1 answer

Bruce (SqlWork.com) 56,031 Reputation points

2023-02-23T18:29:13.9266667+00:00

handlers and modules must be registered in the web.config, as it configuration for IIS.

https://learn.microsoft.com/en-us/troubleshoot/developer/webapps/aspnet/development/http-modules-handlers

the hack approach is for the library to read and update the web.config. but something would need to call the module. if using the owin pipeline, you could use a startup attribute.
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