iurlprovider cannot evaluate expression because the current thread is in a stack overflow state - Extending Umbraco

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Lee 1130 posts 3088 karma points

Jun 22, 2015 @ 10:56

0

IUrlProvider - Cannot evaluate expression because the current thread is in a stack overflow state

I have implemented an IUrlProvider to change a node url, but now I can't run the site and when I debug I get the following error?

Cannot evaluate expression because the current thread is in a stack overflow state

Anyone else had this with an IUrlProvider?

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Lee 1130 posts 3088 karma points

Jun 22, 2015 @ 11:04
0
Should have said I am registering it like so
```
UrlProviderResolver.Current.InsertTypeBefore<DefaultUrlProvider, ServiceUrlProvider>();
```
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Tim 1193 posts 2675 karma points MVP 4x c-trib

Jun 22, 2015 @ 11:10

1

Can you post the code for the UrlProvider? The issue appears to be there I think.

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Lee 1130 posts 3088 karma points

Jun 22, 2015 @ 11:34

I have just changed it and still get the same error. I have this in application starting.

        UrlProviderResolver.Current.InsertType<ServiceUrlProvider>();

And this is my ServiceUrlProvider

public class ServiceUrlProvider : DefaultUrlProvider
{
    public override string GetUrl(UmbracoContext umbracoContext, int id, Uri current, UrlProviderMode mode)
    {
        var content = umbracoContext.ContentCache.GetById(id);
        if (content.DocumentTypeAlias == "Service" && content.Parent != null)
        {
            // Get the last part of the url
            var currentUrl = content.Url;
            var splitSections = currentUrl.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
            return string.Concat("/",splitSections.Last(), "/");
        }
        return base.GetUrl(umbracoContext, id, current, mode);
    }
}

But I just keep getting the StackOverFlow exception... ?

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Carl Jackson 139 posts 478 karma points

Jun 22, 2015 @ 11:36
100
Is it by any chance thaat
```
var currentUrl = content.Url;
```
is recursively calling your service?

Thanks

Carl.
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Lee 1130 posts 3088 karma points

Jun 22, 2015 @ 11:39
0
Well this is awkward lol. Thanks Carl. I thought I had changed that to
```
base.GetUrl(umbracoContext, id, current, mode);
```
But too blindly changing things!! Thanks.
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Doron Uziel 23 posts 93 karma points

Jun 22, 2015 @ 11:44
0
I think that Carl is correct, I would replace it with
```
var currentUrl=base.GetUrl(umbracoContext, id, current, mode);
```
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IUrlProvider - Cannot evaluate expression because the current thread is in a stack overflow state