Can't you just make the user call an static method that encapsulates the
prefix registration and WebRequest creation inside a class you define:
User Code: wr = myProtHandler.Create
Your Library
static WebRequest Create()
{
// Register the prefix and create the WebRequest object here
}
>From you comment I assume that you need the user of your library to call
WebRequest.Create directly but I just wanted to check.
On Fri, 24 May 2002 16:43:14 -0500, Reggie Burnett <[EMAIL PROTECTED]>
wrote:
>Federico,
>
>You are right but unfortunately that doesn't help. The WebRequest
>system checks registered prefixes before instantiating the appropriate
>classes (it has to). In order for your suggestion to work, the code
>needs to refer to my derivative somewhere to call the constructor. From
>what I can tell, there are only a limited number of places where code
>can be defined. An attribute (haven't tried this approach), user
>written classes, and the classes in my library.
>
>The user should only have to write the following so that leaves user
>written code out of consideration.
>
>WebRequest wr = WebRequest.Create("prot://host/url")
>
>
>I havne't found a way to have code inside my library automatically
>called. In the old C++ days, I would have used a globally defined
>object with a constructor that performed the call.
>
>Are there any assembly level startup routines like the old DllInit
>stuff?
>
>What do you think about the attribute approach?
>
>Reggie
>
>> -----Original Message-----
>> From: dotnet discussion [mailto:[EMAIL PROTECTED]] On Behalf
>Of
>> Federico Raggi
>> Sent: Friday, May 24, 2002 11:03 AM
>> To: [EMAIL PROTECTED]
>> Subject: Re: [DOTNET] Automatically executing code
>>
>> Reggie:
>> You don't need to instantiate the class to initialize its
>static
>> members. You just need to use some of its members in your code. The
>> static constructor is called when the class is loaded and it will be
>> loaded only if it's needed by your call.
>>
>> Here is a small sample that initializes a seed using the
>Random
>> class. If you comment the DoSomething() method call in Main, it won't
>> load StaticClass nor execute its static constructor.
>>
>> using System;
>>
>> namespace DotNetList.FedeR
>> {
>> class StaticClass
>> {
>> static float seed;
>>
>> static StaticClass()
>> {
>> Console.WriteLine("StaticClass Initializing");
>> Random r = new Random();
>> seed = r.Next();
>> }
>>
>> public static void DoSomething()
>> {
>> Console.WriteLine("DoingSomething:
>Seed="+seed);
>> }
>> }
>>
>> class myApp
>> {
>> static void Main()
>> {
>> Console.WriteLine("Entering Main");
>> // If you comment this line, constructor won't
>> be called
>> StaticClass.DoSomething();
>> }
>> }
>> }
>>
>> Federico Raggi
>> Latam Developers Initiative Manager
>> Microsoft
>>
>> Phone: (954)489-4862
>> Mobile: (954)465-4862
>>
>> > -----Original Message-----
>> > From: Reggie Burnett [mailto:[EMAIL PROTECTED]]
>> > Sent: Friday, May 24, 2002 10:58 AM
>> > To: [EMAIL PROTECTED]
>> > Subject: Re: [DOTNET] Automatically executing code
>> >
>> > That's what I thought. I tried using a static constructor but you
>have
>> > to explicitly create an object to get it to fire. I'm looking for
>> > something that will automatically run the code to register my
>prefix
>> > without the user of the lib having to do anything. Their first line
>> of
>> > code should be something like
>> >
>> > Wr = WebRequest.Create("blah blah url");
>> >
>> > Is there something at the assembly level or an attribute that I
>could
>> > use to automatically fire some code at app startup?
>> >
>> > Reggie
>> >
>> > > -----Original Message-----
>> > > From: dotnet discussion [mailto:[EMAIL PROTECTED]] On
>> Behalf
>> > Of
>> > > Richard Birkby
>> > > Sent: Friday, May 24, 2002 4:21 AM
>> > > To: [EMAIL PROTECTED]
>> > > Subject: Re: [DOTNET] Automatically executing code
>> > >
>> > > Can you use a static constructor somewhere?
>> > > System.Net registers HTTP, HTTPS and FILE the first time the
>prefix
>> > list
>> > > is
>> > > used *.
>> > >
>> > >
>> > > Richard
>> > > * It uses a double check locking idiom without a volatile
>keyword...
>> > >
>> > > > -----Original Message-----
>> > > > From: dotnet discussion [mailto:[EMAIL PROTECTED]]On
>> Behalf
>> > Of
>> > > > Reggie Burnett
>> > > > Sent: 24 May 2002 01:17
>> > > > To: [EMAIL PROTECTED]
>> > > > Subject: [DOTNET] Automatically executing code
>> > > >
>> > > >
>> > > > I'm implementing a webrequest/webresponse pair and the docs say
>> that
>> > you
>> > > > have to call WebRequest.RegisterPrefix to register your creator
>> > object
>> > > > with that prefix. What is the best way to make that call
>> > automatically
>> > > > without the user of the library needing to explicitly do that?
>> > > >
>> > > > Reggie
>> > > >
>> > > > You can read messages from the DOTNET archive, unsubscribe from
>> > DOTNET,
>> > > or
>> > > > subscribe to other DevelopMentor lists at
>> > http://discuss.develop.com.
>> > >
>> > > You can read messages from the DOTNET archive, unsubscribe from
>> > DOTNET, or
>> > > subscribe to other DevelopMentor lists at
>> http://discuss.develop.com.
>> >
>> > You can read messages from the DOTNET archive, unsubscribe from
>> DOTNET, or
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>http://discuss.develop.com.
>>
>> You can read messages from the DOTNET archive, unsubscribe from
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>
>You can read messages from the DOTNET archive, unsubscribe from DOTNET, or
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