Delete attachment

deleteAttachment.cs

var fileGraph = PXGraph.CreateInstance<UploadFileMaintenance>();
	var savedFilesIDs = PXNoteAttribute.GetFileNotes(this.Document.Cache, this.Document.Current);
	foreach (var savedFileID in savedFilesIDs)
	{
		var savedFileInfo = fileUploadGraph.GetFile(fileID);
		if (savedFileInfo != null
			&& VerifyFileName(savedFileInfo.Name))
		{
			fileGraph.Files.AllowDelete = true;
			fileGraph.Files.Delete(fileUploadGraph.Files.Current);
			fileGraph.Persist();
		}
	}