Checking If String Is A Date In YyyyMMdd Format?

Aug 10, 2011

Not so long ago, I saw somewhere a solution how to check if string is date in yyyyMMdd format (i.e. if it can be converted to date if written in such format). I can't find it anymore but I think is had something to do with DateTime.TryParse method but I can't get it to work. I can get it to work if string is in dd/MM/yyyy format, but dont' know how to make it with yyyyMMdd format. If I'm not mistaken neither of DateTime.TryParse method parameters is for assigning date format...

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Convert A "YYYYMMDD" String To A Date Format Like 'dd Mmm Yy' (or Any Format)?

Sep 4, 2009

MyRow = MyDT.NewRow()
MyRow(1) = rs2.Fields("Field29").Value.ToString

rs2.Fields("Field29").Value has values like "YYYYMMDD" in a string.how can i convert a "YYYYMMDD" string to a needed date format like 'dd mmm yy' (or any format)

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Change The Date Format To YYYYMMDD?

Mar 10, 2010

Is there a way to change the date format to YYYYMMDD? When I try and format it, it's just going and literally printing YYYYMMDD.

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String.replace - Replace The New Format YYYY-MM-DD Back To YYYYMMDD In The Code

May 5, 2009

The file reads in parameters and two of the parameters used to be in Date Format YYYYMMDD but will now permanently be in format YYYY-MM-DD. This change, I believe, is stopping the import of the file from working. I would like to replace the new format YYYY-MM-DD back to YYYYMMDD in the code. If possible I'd also like to see some output so I know that the old format has been replaced with the new format. The code is below. I added the two rows with .replace code in green in expecting that to be enough but it is still not working.

Public
Sub Main()
Dim R1, O1, P1, C1, strDateFrom, strDateTo, strRunDate
As
String

[CODE]...

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Ensure That Conversion Of A Date To A String And A String To A Date Will Give The Same Date Format?

Jan 16, 2012

how I can ensure that conversion of a date to a string and a string to a date will give me the same date format.

For example:

Code:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim d As Date = Date.Now

[code].....

I'm actually only interested in the date part as the label text shows so f is more than I want.But also, the day and month are reversed.

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ComboBox.SelectedValue.ToString ("yyyyMMdd") Method Fails: Conversion From String "yyyyMMdd" To Type Integer Is Not Valid

Jan 26, 2011

am trying to get the following code to work:

Dim testString As String
testString = cbbxStartDt.SelectedValue.ToString("yyyyMMdd")

when doing so the code is being stoped and I get "InvalidCastException" error emssage:

Conversion from string "yyyyMMdd" to type 'Integer' is not valid.

If I do the following, then it works:

Dim testDate As Date
Dim testString As String
testDate = cbbxStartDt.SelectedValue
testString = testDate.ToString("yyyyMMdd")

This, returns the desired value: "20110103"

NB:

cbbxStartDt.SelectedValue.ToString returns: "03/01/2011 00:00:00"

So would it be possible that the problem comes from of the "time bit" : "00:00:00"?if, so is it the parsetime function which would allow to take into account only the time bit value of the combobox?

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Check When Folder Format Is YyyyMMdd?

May 18, 2012

How to check if the folder is in the format yyyyMMdd

Example : I need to process the folders only with the format yyyyMMdd like folder name will be 20120518

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Date Format - Take A String Formatted Like '010711' (DDMMYY) And Put It Into Format '01-Jul-11'?

Jul 1, 2011

I need to take a string formatted like '010711' (DDMMYY) and put it into format '01-Jul-11'. Ive thought about doing something like string.toArray and then having some conditionals that format from there but am looking for an easier way.

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Change MMDDYYYY To European Format YYYYMMDD?

Oct 11, 2011

I am trying to change MMDDYYYY to European format YYYYMMDD. I have this in my query:

"20" & Right([TABLE]![DATE],2) & Mid([TABLE]![DATE],3,2) & Left([TABLE]![DATE],2)

which gives me YYYYDDMM. Does anyone know to get the DD and MM switched so it reads YYYYMMDD?

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Convert String To Date Format?

Dec 16, 2009

I taken dtp value into date object but the date is displaying like this #12/16/2009#, how to get the date value should be 12/16/2009. Or suppose i took dtp text into a string then i convert string to date like this Date.Parse(string) but it's also showing the date value like this #12/16/2009# but i want date value should be 12/16/2009. How to do this in vb.net.All the Best

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Date String Format For Filename?

Apr 1, 2009

I am trying to make a filename something like this:

dim Test as string = "name_" + now.toshortdatestring() + ".pdf"

The datestring is like MM/DD/YYYY, which is a particularly bad filename (who want slashes in their file names??)Is there a way to format the date string differently (ie MM-DD-YYYY)?What I was trying to do is tag the file with a date so I could tell when the last time that file was generated, and also keep multiple copies around for archive purposes. Maybe there is a better way and then I dont even need this differently formatted string?

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Format Date String In Access?

Oct 17, 2011

I have a where clause in an old dusty vb.net application [code]...

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Asp.net - Converting Date String To DateTime Format .net?

Dec 1, 2010

I have this example and it gives me exception "Conversion from string x to dateTime is invalid"

here is my method to validate Datetime. Example Date string : "27/03/1985"

Public Function validateDateColumn(ByRef FieldName As String) As Boolean

[Code]...

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Asp.net - Format - Convert A String Variable To A Date

Dec 27, 2011

I am using the following function to Convert a String variable to a Date. Subtract a day from it and convert the date back to a String. The code goes as follows

[Code]...

If edate has a value 29/12/2011 than the value in expenddt gets changed to a different format and the value in expenddt comes to 12/29/2011 and later after subtracting a day expenddt is 12/28/2011 and than when i convert it back to a String i get the value in asd as "12/28/2012 12:00:00 AM"

[Code]...

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Convert String To Date Format Of YEAR?

Jul 4, 2012

i have input of 1995 in the texbox.what is code to convert that string to DATE.... with format of Y

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Formatting Textbox String Into Date Format?

Jun 29, 2009

My user wants to have textbox fields that don't have any masks but wants those text fields to reformat any text that is entered as mm/dd if it is a real date entered

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How To Convert String To Mysql Date Format

Feb 29, 2012

i want to insert a string as date format in mysql table using vb.net.my code is given below.but i always get an error .the string is stored in an array.

mycode
------

Dim sdfsa As String = Convert.ToDateTime(newarray(i + 17)).ToShortDateString().ToString("yyyy-MM-dd")
Dim newdate As Date = DateTime.ParseExact(sdfsa, "yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture)
datarw("date_of_birth") = newdate

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Implement String Format To Get Valid Date

Nov 10, 2008

I have a string coming into my app that is in the form of:
"Fri Sep 21 07:17:46 2008 GMT" or
"Fri Sep []3 07:17:46 2008 GMT" ([] is a space)
The tricky thing is the space for the date. I currently split the string and grab what I need to make a valid VB date.

Code:
'Receiving a timestamp in the format: Tue Jan 23 19:33:31 2001 GMT
'Split it and grab what we need to make a valid vb date
_element = timeStamp.Split
_dateAndTime = CDate(_element(1) & " " & _element(2) & " " & _element(4) & " " & _element(3))
Return _dateAndTime

I'm running into the problem when the date is a single digit because there is never a 0 on single digit dates. So, when I split the string I get a "" for _element(2) and that's bad. I know workarounds to adapt for this, however, my question is: How to implement the String.Format to manipulate this string as is and make it a valid VB date? How to make VB recognize this string as a valid VB date without a prepending 0 on single dates.

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Refer The Date Format From Computer Regional Date Format Setting?

Dec 13, 2011

example: inside regional date format setting i set "Short date format dd/MMM/yyyy" and inside vb.net program i set "strSQL = strSQL & ",'" & Date(Date.Now.ToString("dd/MM/yyyy")) & "'" ----> working fine. if user changed the regional date format setting to other format like "mm/dd/yy" facing problem during saving record into sql table. error date conversion. It's possible to avoid using computer regional date format from vb.net? or have any other way...

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VS 2005 Date Format - Insert Date In Dd/mm/yy Format In Sql Table From A Textbox

Apr 26, 2010

i am trying to insert date in dd/mm/yy format in sql table from a textbox but everytime the default date 01/01/00 goes in table.

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VS 2005 Make Date Format Independent Of System Date Format

Apr 16, 2009

I am working on a project inwhich I want same date format in all project forms. I want to use a form for setting/resetting date format for whole project. whenever I will change date format in this settings form, there should be this new date format available in all forms. how can I implement this?

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Getting Error Trying To Convert Date String In "hh:mm:ss Tt MM/dd/yy" Format To Date?

Jun 8, 2011

i cant seem to create a datetime object in vb.net with datetime string that's in this format "hh:mm:ss tt MM/dd/yy".The error im getting says its not a recognisable string datetime format.

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Auto-Correcting Date Format STRING 'dd/MM/yyyy'

May 3, 2012

I am manipulating xml with lots of date of birth. XMLs are already loaded onto datatable. The format we need is "dd/MM/yyyy" The dates are messy such as "dd-MM-yyyy" or "dd.MM.yyyy" so I am thinking to write a function that will auto correct on a set of predefined separators to a correct format. so I am thinking to do something like this but of course, this won't just work.i cannot use replace to replace an array. If i can just do that, everything would be fine. Hope someone can point out a way around. [code]

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Convert A String With Unusual Date Format To Datetime?

Jul 3, 2009

i have a string "07.03.2009 17.06.00" that i want to convert to datetime. i have tried

DateTime.ParseExact(Me
.Text, "MM.dd.yyyy HH.mm.ss"
, New
System.Globalization.CultureInfo("en-GB"
, True
))

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Convert Numeric String To Date In Format Dd.MM.yyyy?

Dec 17, 2009

I need to convert numeric string to date in format dd.MM.yyyy :(

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Forms :: Formatting Textbox String Into Date Format?

Dec 19, 2010

My user wants to have textbox fields that don't have any masks but wants those text fields to reformat any text that is entered as mm/dd if it is a real date entered. They won't be using the year.

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How To Format String To Represent Date In Specific Layout

Apr 28, 2009

I'm trying to format a string to represent a date in a specific format using the Format function but it's return odd results.
Here's an example:
Dim s as String = "01/01/2000"
Dim result as String = ""
result = Format(s, "dd-mmm-yyyy")
result equals "dd-mmm-yyyy" (the format string) very strange.

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Why Doesn't CDate(integer) Work Where Integer Has Format Of YYYYMMDD

Mar 14, 2012

Why doesn't CDate(integer) work where integer has format of YYYYMMDD ?and why won't this stupid site let me submit such a short question when I have nothing else to add except some waffle at the end

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Conversion From String YyyyMMdd To Type Integer Is Not Valid

Oct 2, 2009

I have a dataset containing a datatable, and I enumerate all rows in that datatable. When trying to format a column in that row, I run into an exception. (Part of) the code is:

For Each dr As DataRow In ds.Tables("records").Rows
file = dr("timestamp").ToString("yyyyMMdd") & "~.wav"
Next

This results in the following error message:

Conversion from string yyyyMMdd to type Integer is not valid. (translated from a Dutch error message to the English equivalent)

dr("timestamp").GetType.FullName results in "System.DateTime", so I don't understand why I run into this exception, as for example Now.ToString("yyyyMMdd") results in "20091002", and "Now" is of the same type as dr("timestamp"), "System.DateTime" that is.

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Converting Date String Starts With Days To DateTime Format?

Dec 1, 2010

I Have this date "27/03/1985" and because it starts with days i can't convert it to datetime.

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