Answer by Chethaka Wickramarathne for Difference in months between two dates

LINQ Solution,

DateTime ToDate = DateTime.Today;DateTime FromDate = ToDate.Date.AddYears(-1).AddDays(1);int monthCount = Enumerable.Range(0, 1 + ToDate.Subtract(FromDate).Days)                    .Select(x => FromDate.AddDays(x))                    .ToList<DateTime>()                    .GroupBy(z => new { z.Year, z.Month })                    .Count();