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How can get Previous item in list using foreach loop?

How can get Previous item in list using foreach loop?

Sandeep Singh Shekhawat

Sandeep Singh Shekhawat

13y22.9kVisual Basic .NET

I have a list

var _PublicHoliday = _db.tbl_HolidayMasters.Where(x => x.IsDelete == false).ToList();

and i am geting each item using foreach loop

foreach (var objPublicHoliday in _PublicHoliday)

{

if ((Convert.ToDateTime(DateTo.Text).AddDays(1)).Equals(objPublicHoliday.HolidayDate))

{

todate = Convert.ToDateTime(todate).AddDays(1).Date.ToShortDateString();

flagHoliday = 1;

}

}

Whenever I moved next holiday date the how can get previous holiday date in list?

Thanks

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nitesh Kejriwal13y ago
Sandeep, the best way will be to store the previous value in a temporary variable.
For ex -
DateTime prevHoliday = DateTime.MinValue

foreach(var o in list)
{
//Do whatever
prevHoliday = o;
}
In every iteration, you will get previous holiday in prevHoliday variable.
Vulpes13y ago
You can't really do this with 'foreach' which can only move in a forward direction.

It's better to use 'for' instead which enables you to use the list's indexer property:

for (int i = 0; i < _PublicHoliday.Count; i++)
{
var objPublicHoliday = _PublicHoliday[i];

// etc
}

If i > 0, you can now refer to the previous holiday date in the list with _PublicHoliday[i - 1].