Filter time from datatable

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Hi
I want to filter out the time based uplon query
I am retreving From Time and ToTime from the database
it is coming like this

VB

FromTime         ToTime
2:30 PM          4:30 PM
11:30 AM        11:30 AM
5:30 PM          7:30 PM
4:30 PM           1:30 AM
1:30 AM           2:30 AM
6:30 AM          12:30 PM
10:30 PM         8:30 AM

I have written linq query which query's the datatable
and filters out Time Between 12:00 Am and 09:00 AM

C#

var time = from i in dt.AsEnumerable()
                          where DateTime.Parse(i.Field<string>("FromTime"), CultureInfo.InvariantCulture) >= DateTime.Parse("12:00 AM", CultureInfo.InvariantCulture)
                              && DateTime.Parse(i.Field<string>("ToTime"), CultureInfo.InvariantCulture) <= DateTime.Parse("09:00 AM", CultureInfo.InvariantCulture)
                          select i;

But the filtering is not done properly can any one let me know where i am going wrong

Posted 30-Sep-13 3:19am

rocky_em

Updated 30-Sep-13 3:26am

coded007

v2

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Comments

joshrduncan2012 30-Sep-13 9:23am

"But the filtering is not done properly"
Can you elaborate on this? What output are you getting as compared to what you expect to get?

rocky_em 30-Sep-13 9:47am

wheni execute the query i amgetting out put like this
From Time Totime
4:30 PM 1:30 AM
1:30 AM 2:30 AM
10:30 PM 8:30 AM

what i am expecting is
FromTime ToTime
1:30 AM 2:30 AM
because i want record between 12:00 AM and 09:00 AM

joshrduncan2012 30-Sep-13 9:52am

You should probably change && DateTime.Parse(i.Field<string>("ToTime") to filter on "FromTime". That's probably why you are getting incorrect information.

rocky_em 30-Sep-13 9:54am

I am Sorry i did not understood what you meant to say

joshrduncan2012 30-Sep-13 10:07am

My suggestion would be to do the following:

Change
&& DateTime.Parse(i.Field<string>("ToTime")
to read
&& DateTime.Parse(i.Field<string>("FromTime")

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mgoad99 · Accepted Answer · 2013-09-30T05:39:00

it looks like your query is working correctly based on how it is written
you said:
FromTime >= 12AM
and ToTime <= 9AM

The result set you are getting has FromTime >= 12AM (4:30PM, 1:30AM and 10:30PM)
and ToTime <= 9AM (1:30 AM, 2:30AM, 8:30AM)

if you want BETWEEN try
(FromTime >= 12AM && FromTime <= 9AM)
AND (ToTime >= 12AM && ToTime <= 9AM)