Umbraco - c＃中的DocumentType字段

Question

I'm trying to get an Umbraco Field in c# like this :

(String.Format(Umbraco.Field("labelFailure").ToString(), username));

But I'm getting the following error :

Cannot return the IPublishedContent because the UmbracoHelper was constructed with an UmbracoContext and the current request is not a front-end 
request.

I don't know the error and how to resolve it.

Thanks!

Answer 1

If you are not in a view you should use GetPropertyValue on the IPublishedContent of the page to get your value:

..
using Umbraco.Web;
..

var idPage = 1234; // you should get this dynamically :)
IPublishedContent page = Umbraco.TypedContent(idPage);
var labelFailure = page.GetPropertyValue<string>("labelFailure");