Hi.
I'm trying to make a criteria string to use in Select() method of a datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
6  4674 
OUCH! Found it... the Select() method by default, searches only for commited data.... and my DataRow was not yet commited by the AcceptChanges() method.
Then, to fix it, i should use:
arrRows = dtbSample.Select("COM_STARTDATE >= #May/09/2006#", "", DataViewRowState.ModifiedCurrent)
The third parameter now makes the method works like I want.
[]s
Cesar
"ronchese" <info(a)carsoftnet.com.br> wrote in message news:eu*************@TK2MSFTNGP02.phx.gbl...
Hi.
I'm trying to make a criteria string to use in Select() method of a datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
Cesar,
I suspect that '2006/05/09' is not being translated properly.
Try:
arrRows = dtbSample.Select("COM_STARTDATE >= #05/09/2006#")
As Date values in DataSet expressions need to be delimited by #. http://msdn.microsoft.com/library/de...ssiontopic.asp
I believe the date values are in m/d/y format.
Something like:
Dim table As New DataTable
table.Columns.Add("COM_STARTDATE", GetType(DateTime))
table.Rows.Add(#5/8/2006 9:00:00 AM#)
Dim rows() As DataRow = table.Select("COM_STARTDATE >=
#05/09/2006#")
--
Hope this helps
Jay B. Harlow [MVP - Outlook]
..NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net
"ronchese" <info(a)carsoftnet.com.br> wrote in message
news:eu*************@TK2MSFTNGP02.phx.gbl...
Hi.
I'm trying to make a criteria string to use in Select() method of a
datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the
following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified
criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is
returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning
row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
I tryied # also, like showed in PS area, at end of e-mail :D ps.:
For you know, I tryied to build criteria like below and still is returning
row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
But the problem was the rows not commited, and the Select() only searches in commited data.
I posted the solution in a other reply.
Thanks anyway, for response.
[]s
Cesar
"Jay B. Harlow [MVP - Outlook]" <Ja************@tsbradley.net> wrote in message news:%2****************@TK2MSFTNGP05.phx.gbl... Cesar,
I suspect that '2006/05/09' is not being translated properly.
Try:
arrRows = dtbSample.Select("COM_STARTDATE >= #05/09/2006#")
As Date values in DataSet expressions need to be delimited by #.
http://msdn.microsoft.com/library/de...ssiontopic.asp
I believe the date values are in m/d/y format.
Something like:
Dim table As New DataTable
table.Columns.Add("COM_STARTDATE", GetType(DateTime))
table.Rows.Add(#5/8/2006 9:00:00 AM#)
Dim rows() As DataRow = table.Select("COM_STARTDATE >=
#05/09/2006#")
--
Hope this helps
Jay B. Harlow [MVP - Outlook]
.NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net
"ronchese" <info(a)carsoftnet.com.br> wrote in message
news:eu*************@TK2MSFTNGP02.phx.gbl...
Hi.
I'm trying to make a criteria string to use in Select() method of a
datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the
following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified
criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is
returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning
row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
Hmmm... After some testes, I noticed that the value DataViewRowState.CurrentRows works better than the previous I told.
Example:
arrRows = dtbSample.Select(strCrit, "", DataViewRowState.CurrentRows)
[]s
Cesar
"ronchese" <info(a)carsoftnet.com.br> wrote in message news:u9**************@TK2MSFTNGP04.phx.gbl...
OUCH! Found it... the Select() method by default, searches only for commited data.... and my DataRow was not yet commited by the AcceptChanges() method.
Then, to fix it, i should use:
arrRows = dtbSample.Select("COM_STARTDATE >= #May/09/2006#", "", DataViewRowState.ModifiedCurrent)
The third parameter now makes the method works like I want.
[]s
Cesar
"ronchese" <info(a)carsoftnet.com.br> wrote in message news:eu*************@TK2MSFTNGP02.phx.gbl...
Hi.
I'm trying to make a criteria string to use in Select() method of a datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
Working more, I got another problems with some other uses for select()... After break the head a bit more, I found that DataBindings was the root for causing all the troubles. Then, after I set:
BindingContext(dtb).SuspendLayout()
... when the form closes, everything work like nothing was happened.
And then, I even dont needed that 3rd parameter in the Select() commands I used. Rewrote everything again. :D
[]s
Cesar
"ronchese" <info(a)carsoftnet.com.br> wrote in message news:Og**************@TK2MSFTNGP03.phx.gbl...
Hmmm... After some testes, I noticed that the value DataViewRowState.CurrentRows works better than the previous I told.
Example:
arrRows = dtbSample.Select(strCrit, "", DataViewRowState.CurrentRows)
[]s
Cesar
"ronchese" <info(a)carsoftnet.com.br> wrote in message news:u9**************@TK2MSFTNGP04.phx.gbl...
OUCH! Found it... the Select() method by default, searches only for commited data.... and my DataRow was not yet commited by the AcceptChanges() method.
Then, to fix it, i should use:
arrRows = dtbSample.Select("COM_STARTDATE >= #May/09/2006#", "", DataViewRowState.ModifiedCurrent)
The third parameter now makes the method works like I want.
[]s
Cesar
"ronchese" <info(a)carsoftnet.com.br> wrote in message news:eu*************@TK2MSFTNGP02.phx.gbl...
Hi.
I'm trying to make a criteria string to use in Select() method of a datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
Ronchese,
That the Select is buggy is in my idea not even testable because the lack of documentation around the Expression.
However, AFAIK has a date in the select in VB to be the USA date literal as you have used in your example. The Expression is AFAIK totaly based on USA behaviour.
I hope this helps a little bit.
Cor
"ronchese" <info(a)carsoftnet.com.br> schreef in bericht news:eu*************@TK2MSFTNGP02.phx.gbl...
Hi.
I'm trying to make a criteria string to use in Select() method of a datatable, searching for a date, but it is apparently not working!
In one of my tests, I have a datatable with 1 row and a field containing the following value (extracted from Immediate Window):
?dtbSample.Rows(0).Item("COM_STARTDATE")
#5/8/2006 9:00:00 AM# {Date}
Date: #5/8/2006 9:00:00 AM#
(for better understand, consider this date as '2006/05/08')
Then, I test a criterium to DON'T show that row, using this:
arrRows = dtbSample.Select("COM_STARTDATE >= '2006/05/09'")
Now, look the results in immediate window:
?arrRows.Length
1
!!!!!!
The Select() is returning a DataRow with a date less than the specified criterium, which is requiring a date higher than existing in the DataTable!!
In resume, '2006/05/08' is less than "COM_STARTDATE >= '2006/05/09'", but is returning like if '2006/05/08' is higher.
Someone already noticed that behaviour? There is a way to fix it?
Cesar
ps.:
For you know, I tryied to build criteria like below and still is returning row (not working):
("COM_STARTDATE >= #'2006/05/09#") 'yyyy/MM/dd and #
("COM_STARTDATE >= '05/09/2006'") 'MM/dd/yyyy
("COM_STARTDATE >= '" & TheDate.ToString & "'") 'a Date datatype
("COM_STARTDATE >= #05/09/2006#") 'MM/dd/yyyy and #
("COM_STARTDATE >= #May/09/2006#") 'MMM/dd/yyyy and #
I repeat, these don't works!! They are returning the row. :^P
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