Question

I am using this method to get a list of week start from my data.
However, at the end of the month a week could be a split between 2 months
however i am having a hard time using my method to check the split weeks in my method to get the months

Method to get list of Months

var monthlist = data.Select(x => new { wkdate =  x.WKENDstart }).OrderBy(y => y.wkdate).Select(m => new
        {
            monthname = m.wkdate.ToString("MMM yyyy", CultureInfo.CreateSpecificCulture("en-US"))
        }).Distinct().ToList();

Method to check if its a split week

public static bool isSplitWeek(System.DateTime Enddate, System.DateTime Startdate)
{
    bool isSameMonth = (Enddate.Month == Startdate.Month) ? true : false;

    return !isSameMonth ? true : false;

}

Im basically trying to use an if where it say x.WKENDstart, that way i get both months if a week starts in one month and ends in another.

Answer 1

After deciding on how i could approach this issue i decided to use a .WHERE clause and a .Union
By doing this i was able to handle normal weeks in one section and split weeks in another and just union them together. The key to the issue was to use the where clause.

 var monthlist1 =                
    data.Select(x => new { wkdate = x.WKENDDATE }).OrderBy(y => y.wkdate).Where(l=> ExportHelper.isSplitWeek(l.wkdate,l.wkdate.AddDays(6)) != true)
    .Select(m => new{monthname = m.wkdate.ToString("MMM yyyy", CultureInfo.CreateSpecificCulture("en-US"))})
    .Distinct()            
    .ToList();

  var monthlist2 = 
     data.Select(x => new { wkdate = x.WKENDDATE.AddDays(6) }).OrderBy(y => y.wkdate).Where(l=> ExportHelper.isSplitWeek(l.wkdate.AddDays(-6),l.wkdate) == true).Select(m => new
    {monthname = m.wkdate.ToString("MMM yyyy", CultureInfo.CreateSpecificCulture("en-US"))}) 
    .Distinct()            
    .ToList();

  var monthlist = monthlist2.Union(monthlist1)
   .Distinct()
   .ToList();