How to get the GUID of a node

Craig100

08/14/2023, 2:48 PM

In a class using IUmbracoContextFactory, I'm trying to get the Guid of a node for later use, but all I get is a load of 00000's. I've tried many things but none work. I think this should work but it doesn't:

Copy code

var orderConfirmedGuid = siteRoot.DescendantsOrSelf<GeneralPage>().Where(x => x.Name == "Order Confirmed").FirstOrDefault().GetUdi().AsGuid();

I can get the Id, so I know the Name string is correct, but not the Guid. Any ideas? Thanks.

Ambert

08/14/2023, 2:49 PM

Get the .Key 🙂

Ambert

08/14/2023, 2:49 PM

instead of .GetUdi()

Anders Bjerner

08/14/2023, 4:18 PM

And remember null checks for

.FirstOrDefault()

Anders Bjerner

08/14/2023, 4:23 PM

I know this wasn't part of your question, but also some additional tips: - calls to any Descendant(s) method can be pretty bad for performance for big sites. Might be worth looking for a better way to archive what you're trying to do - although not always there is one - a call to

.Where

followed by a call to

FirstOrDefault

can typically be combined - eg. such as

.FirstOrDefault(x => x.Name == "Order Confirmed")

. So if we look past the potential issue with iterating trough descendants, your code could look as:

Guid? orderConfirmedGuid = siteRoot.DescendantsOrSelf<GeneralPage>().FirstOrDefault(x => x.Name == "Order Confirmed")?.Key;

Jason

08/14/2023, 4:26 PM

In the case of the latter, for performance too

Where()

has to iterate everything,

FirstOrDefault()

returns as soon as it finds a match.

Anders Bjerner

08/14/2023, 4:27 PM

Exactly. I should've written why that matter :p

Craig100

08/15/2023, 8:52 AM

Thanks. I had

Copy code

OrderConfirmedGuid = siteRoot.DescendantsOrSelf<GeneralPage>().Where(x => x.Name == "Order Confirmed").FirstOrDefault().Key.AsGuid();

but now I have

Copy code

OrderConfirmedGuid = siteRoot.DescendantsOrSelf<GeneralPage>().FirstOrDefault(x => x.Name == "Order Confirmed").Key.AsGuid();

🙂

Dean Leigh

08/15/2023, 9:09 AM

Ooh til why to use FirstOrDefault

Anders Bjerner

08/15/2023, 9:23 AM

@Craig100

.Key

returns a GUID, so the extra

.AsGuid()

shouldn't be necessary (I'm not exacly sure what it does)

Jason

08/15/2023, 11:39 AM

Copy code

csharp
public static Guid AsGuid(this object value) => value is Guid guid ? guid : Guid.Empty;

😬

251 Views

Previous Next

Umbraco

A hub and casual space for you to interact with fellow community members and learn more about Umbraco!