Get Record From three table in linq

Question

I have use this query for get data from three table .But i have null Not record found issue.

var Fav = (from FV in _context.TblFavUserVideo

join VM in _context.TblVideoMaster on FV.CategoryId equals VM.CategoryId

join EV in _context.TblEducationalVideo on FV.EducationalVideoId equals EV.EducationalId

where FV.UserId == obj_parameter.UserId && VM.VideoFavStatus== Convert.ToBoolean(1) && FV.EdcuationalVideoStatus == Convert.ToBoolean(1)

select new

{

FV.FavId,

//FV.FileId,

FV.UpdatedDate,

VM.FilePath,

EV.VideoPath,

EV.ImagePath,

EV.EducationalId

}).ToList();

if (Fav.Count > 0)