c# - Xamarin.Forms Deleting Files at Runtime iOS -

i need store byte[] in memory. need access later. byte[] represents video. following code allow file written memory, accessed memory. when remove method shown below called, can still accessed later.

i have checked pathname same.

        public void storevideo(byte[] video, string filename)         {             var documents = environment.getfolderpath(environment.specialfolder.mydocuments);             var directoryname = path.combine(documents, "videos");             directory.createdirectory(directoryname);             var path = path.combine(directoryname, filename);             file.writeallbytes(path, video);         }          public void removevideo(string filename)         {             var documents = environment.getfolderpath(environment.specialfolder.mydocuments);             var directoryname = path.combine(documents, "videos");             var path = path.combine(directoryname, filename);             file.delete(filename);         }          public byte[] getvideo(string filename)         {             var documents = environment.getfolderpath(environment.specialfolder.mydocuments);             var directoryname = path.combine(documents, "videos");             var path = path.combine(directoryname, filename);              if(file.exists(path))             {                 return file.readallbytes(path);             }             return null;         } 

the answer small brain fart on path being passed file.delete method. run should aware file.delete not throw exception if cannot delete file. should practice wrap file.delete method check file.exists