Hello,

Have a look at the Hybrid Framework. This code runs on startup: https://github.com/jbreuer/Hybrid-Framework-for-Umbraco-v7-Best-Practises/blob/master/Umbraco.Extensions/Events/UmbracoEvents.cs#L44

Jeroen

Why is it inheriting from ApplicationEventHandler ?

An example: https://github.com/umbraco/Umbraco-CMS/blob/7.3.0/src/Umbraco.Web/UmbracoDefaultOwinStartup.cs

Since you are NAMING your attribute you need to apply that in web.config:

You don't have to name your startup, see docs: http://www.asp.net/aspnet/overview/owin-and-katana/owin-startup-class-detection

Hello all,

I have a similar issue using Umbraco 7.3.4. I'm trying to use SignalR but I'm so far been unable to run the code in the Configuration method below. I've added a breakpoint on the base.Configuration(app) line but this never gets hit

using Microsoft.Owin;
using Owin;
using Umbraco.Web;

[assembly: OwinStartup("BenTestStartup", typeof(Intranet2.App_Start.Startup))]
namespace Intranet2.App_Start
{
    public class Startup : UmbracoDefaultOwinStartup
    {
        public override void Configuration(IAppBuilder app)
        {
            base.Configuration(app);
            app.MapSignalR();
        }
    }
}

I have remove the default and added the key to the web.config

<!--<add key="owin:appStartup" value="UmbracoDefaultOwinStartup" />-->
<add key="owin:appStartup" value="BenTestStartup" />

Is there anything obvious that I could have missed which would mean my Configuration method would not run?

Hello Sharon,

Yes, this is still an issue for me. Fortunately, the requirement to use SignalR has been dropped, but I will need to get this going again in the near future.

I tinkered with things a bit... I tried a brand new Web Application in Visual Studio, and then installed Umbraco through NuGet (7.4.1 I think), and then SignalR, but I still couldn't get the breakpoint to be hit. If I installed SignalR straight into a Mvc application (not Umbraco), then the breakpoint would be hit. If the requirement to use SignalR had still existed, I was going to try to call app.MapSignalR from within an ActionFilter or an AuthorisationFilter (as I would have done in Mvc).

As you say my code looks fine (and I've repeated on another project), I suppose I could have missed something somewhere along the line.

Does a working version of an Umbraco Solution file with SignalR installed exist which I can download to test locally?

Thanks for your help Ben

Is this startup class in your App_Code or is it compiled?

hi Sharon,

It is compiled (Web Application).

same issue for me on 7.4.1 i want to use my own startup .. removing "owin:appStartup":"UmbracoDefaultOwinStartup" breaks the backoffice but my startup class is hit. adding it back in means my startup is never hit.

EDIT: worked it out. durrhhh. stupid me.

Create a Startup.cs and comment out "owin:appStartup":"UmbracoDefaultOwinStartup" , OWIN obviously looks for Startup by default. just need to inherit UmbracoDefaultOwinStartup

using System;
using Microsoft.Owin;
using Owin;
using Umbraco.Web;

[assembly: OwinStartup(typeof(Startup))]
namespace My.Site
{
    public class Startup : UmbracoDefaultOwinStartup
    {
        public new void Configuration(IAppBuilder app)
        {
            base.Configuration(app);
            //my own startup functions
        }
    }
}

It's mostly because of the way you've declared your start-up class, you haven't named it in your Owin start-up attribute. What you've done will work but it's not best practices for Umbraco. You should use an overload on that attribute to give it a name and then use this name in your web config owin start-up declaration. Like this https://github.com/umbraco/UmbracoIdentityExtensions/blob/master/src/Umbraco.IdentityExtensions/App_Start/UmbracoStandardOwinStartup.cs.pp

http://nddt-webdevelopment.de/umbraco/umbraco-owinstartupattribute-friendlyname-error

This articles explains exact implementation details of integrating Owin in Umbraco 7

https://blog.indivirtual.nl/umbraco-7-3-and-oauth-2-0/

I had this issue, put a breakpoint in the code, never hit.

Spotted that in the app config the following owin startup was defined.

<add key="owin:appStartup" value="UmbracoDefaultOwinStartup" />

swapped it to

<add key="owin:appStartup" value="UmbracoStandardOwinStartup" />

works perfectly now.

[assembly: OwinStartup("UmbracoStandardOwinStartup", typeof(UmbracoStandardOwinStartup))]

public class UmbracoStandardOwinStartup : UmbracoDefaultOwinStartup
{

If anyone comes across this problem using Umbraco 8, this is how I fixed it.

Web.config

<add key="owin:appStartup" value="SiteStartUp" />

Startup.cs

using Microsoft.Owin;
using Owin;
using Umbraco.Web;

[assembly: OwinStartup("SiteStartUp", typeof(Web.UI.Startup))]

namespace Web.UI
{
    public class Startup : UmbracoDefaultOwinStartup
    {
        public override void Configuration(IAppBuilder app)
        {
            base.Configuration(app);
            app.MapSignalR();
        }
    }
}

I found the above allows you to use your friendly name for OwinStartUp and also will enable you to log in to the back office.

Be careful if you are using breakpoints to test if your statup class is being loaded. Checkout this link: https://stackoverflow.com/a/22772759/1053594

To test with break points:

• Set the breakpoints
• Start debugging
• When your site loads, make a change to web.config and save (you can just add/remove whitespace)
• Reload the site. Your breakpoints will now be hit.

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