Hi Fujio

This is correct as per the documentation located here:

https://world.episerver.com/documentation/class-library/?documentId=cms/7/0b43644e-7c61-d035-3f70-1ab53854e4d3

You could also do this when calling save :

contentRepository.Save((IContent)writableFormContainerBlock, SaveAction.Publish);

Thanks

Paul

Sorry for such a general newbie question and thanks! Will play around with it.

Fujio, don't be apologising. We were all newbies once and by asking questions we only learn, in fact ask more questions I would say. 

Thanks Paul!

After taking a look at this explanations - https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/types/casting-and-type-conversions - if I get it correctly, another question appeared - is it safe to "transform" FormContainerBlock into IContent? Will FormContainerBlock after casting into IContent get back into form of FormContainerBlock (let's say after "Save")? Won't FormContainerBlock lack some (properties?, etc.) as IContent?

PS.: I also cast "ElementBlockBase" (of that "FormContainerBlock") to "ICotnent" inside that code the same way as casting "FormContainerBlock" to "IContent".

Hi Fujio,

Everything you have said makes sense to me, so i had to have a look further.

Digging into the FormContainerBlock (in Episerver.Forms) it does not implement IContent.

So if I was trying to create a FormContainerBlock programmatically I would use this method:

var contentRepository = ServiceLocator.Current.GetInstance<IContentRepository>();
var contentTypeRepository = ServiceLocator.Current.GetInstance<IContentTypeRepository>();
var languageSelectorFactory = ServiceLocator.Current.GetInstance<LanguageSelectorFactory>();

var blockType = contentTypeRepository.Load<FormContainerBlock>();
var block = contentRepository.GetDefault<IContent>EPiServer.Forms.Configuration.Settings.Current.RootFolder, blockType.ID, languageSelectorFactory.Create(ContentLanguage.PreferredCulture.Name).Language);
block.Name = "My new form conatiner block";
contentRepository.Save(block, SaveAction.Publish, AccessLevel.NoAccess);

Hope this helps.

Paul