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Getting Null Reference Exception on contentRepository.Delete
first of all, as a side note, you should move var list = mediafiles.ToList(); to outside of the for loop
second of all, can you check if list[i].ContentLink is not throwing the null reference exception itself ?
new ContentReference(currentBlock.Folder) - this also does not look right to me. how does currentBlock.Folder look like?
Aug 02, 2023 8:23
new ContentReference(currentBlock.Folder) is just where the folder id comes in because and that part is not null and neither is the list[i].ContentLink. Also thanks I missed that the list was being made inside the loop, but that change didnt fix the null exception. I also confirmed that the _contentRepository and the AccessLevel are not throwing null themsevles
Aug 02, 2023 13:16
my (1) point was not meant to solve the problem, it's just a small thing that I spotted and can't keep quiet - old habit die hard.
so could you trace down there the null ref exception is thrown?
Aug 02, 2023 13:21
Nope I am not still not sure why it is happening but I found _contentRepository.Service.MoveToWasteBasket() is working fine with the same set up. So I may be able to work around it.
Aug 02, 2023 13:25
Maybe you can debug it? or turn on debug mode (including the pdb to the bin folder) to see which line is throwing the exception ?
Aug 02, 2023 13:31
Could it be that your loop is trying to access content that was already deleted?
Maybe do a foreach-loop instead of a for-loop. That will simplify the code, and do forward-only iteration.
Aug 04, 2023 15:20
Hi,
I have been trying to programmatically delete media files with contentRepository.Delete() and every time I run it I get a NullReference Exception.
the code looks like something like this:
[TemplateDescriptor(Inherited = true)] public class TestBlockComponent : AsyncBlockComponent<TestBlock> { private readonly Injected<IContentRepository> _contentRepository; protected override async Task<IViewComponentResult> InvokeComponentAsync(TestBlock currentBlock) { var mediafiles = _contentRepository.Service.GetChildren<CustomPdfFile>(new ContentReference(currentBlock.Folder)); for (var i = 0; i < mediafiles.Count(); i++) { var list = mediafiles.ToList(); _contentRepository.Service.Delete(list[i].ContentLink, true, AccessLevel.NoAccess); } return await Task.FromResult(View("~/Features/Blocks/TestBlock/TestBlock.cshtml", model)); } }