I am writing something in VB and need to convert a SQL date (not datetime) into a string. This should be an easy convertion, however toString does not work and I cannot find anything online .
The part of the code I'm working on looks like this:
Dim incomingDate As String
incomingDate = row.Cells(5).Text.ToString()
When the data being put in the gridview is a DateTime datatype this works fine. If it's simply Date, it gives me the following error message:
"Specified argument was out of the range of valid values.
Parameter name: index"
I've also tried this work-around but it didn't work
Dim incomingDate As String
Dim d As New DateTime
d = DateTime.Parse(row.Cells(5).Text)
incomingDate = Date.Parse(row.Cells(5).Text)
Same error...
In SQL you can use convert(varchar, mySqlDate, 101) to emit a string instead of a date. Is that what you had in mind?
Related
So I have this datetime value of 9.3.2016 18:56:12, by using datetime.parse, I can get the values but instead of getting '3' as the month, it takes '9' as month and '3' as day which is incorrect.
dim d1 as string = "9.3.2016 18:56:12"
dim d2 as datetime = datetime.parse(d1, CultureInfo.InvariantCulture)
I don't want to use datetime.parseExact because I'm having more than 1 value in the database.
Please help :( thank you!
Since you current culture appears to interpret dates in the way you expect you could simply do this,
Dim dateString = "9.3.2016 18:56:12"
Dim dateValue = DateTime.Parse(dateString)
By not specifying the InvariantCulture, you instruct DateTime.Parse to use the current culture which, in your case, interprets the date string correctly.
Sorry I've got the solution.
dim d2 as datetime = convert.todatetime(d1)
I'm taking date from my csv file
Dim odateq As String = sData(0).Trim()
I am getting odateq as 9/15/2015
I want to convert this to 15/9/2015. So I wrote code like this
Dim newdate As DateTime = DateTime.ParseExact(odateq, "dd/MM/yyyy", System.Globalization.CultureInfo.CurrentCulture)
And I'm getting an error like this :
String was not recognized as a valid DateTime.
any help is very appreciable...thanks
the code you wrote is using the wrong format; the date you have is in the format M/d/yyyy (month and day without leading zero are a guess because you did not specify it).
try with this one:
Dim newdate As DateTime = DateTime.ParseExact(odateq, "M/d/yyyy", System.Globalization.CultureInfo.CurrentCulture)
the format you set in the ParseExact was telling the function to expect a date in the format dd/MM/yyyy like 01/05/2015 but what you have is not in that format.
after you parse the input date, to get a string with format dd/MM/yyyy use:
Dim dateAsText As String = newdate.ToString("dd/MM/yyyy")
I have a date in string variable strOrderEndDate which looks like this 8/14/2015.
I would like to convert it to 2015-08-14.
How do I do this in vb.net?
I tried strOrderEndDate.ToString(yyyy mmmm dd) but its not working
As the comments indicate, you first need to convert the string to a date using CDate. Then you can use the .ToString method on the new date type variable to format the output as desired:
Dim strOrderEndDate As String = "8/14/2015"
Dim datOrderEndDate As Date = CDate(strOrderEndDate)
MsgBox(datOrderEndDate.ToString("yyyy-MM-dd"))
...or as Plutonix recommends, you can use DateTime.Parse to perform the conversion. He's pretty smart so if he says it's better, then it's better.
Dim datOrderEndDate As Date = DateTime.Parse(strOrderEndDate)
i have a string which has a value of "08-06-2008". I want the result to look like "08-06-08". Is there a way to do this? I've tried CDate but that only gives me 8/06/2008 which doesnt resolve the issue.
Parse it to Date and back to string:
Dim dt As Date = Date.ParseExact("08-06-2008", "MM-dd-yyyy", CultureInfo.InvariantCulture)
Dim result As String = dt.ToString("MM-dd-yy", CultureInfo.InvariantCulture)
Since that is a normal format you could also omit the format string and use Date.Parse directly:
Dim dt As Date = Date.Parse("08-06-2008", CultureInfo.InvariantCulture)
I have used CultureInfo.InvariantCulture to avoid localization issues, normally your current culture is used in Parse/ParseExact and ToString.
See: Custom Date and Time Format Strings
Firstly, avoid CDate. It is a hangover from VB6, and is almost certainly less efficient than using the .net equivalent.
The following should give you the right answer:
string value = DateTime.ParseExact("08-06-2008", "dd-MM-yyyy").ToString("dd-MM-yy")
Note that your existing date format is ambiguous, so I've been unable to tell if you're meaning the 6th of August or the 8th of June - this is why I've used ParseExact over Parse. ParseExact is also slightly more efficient, as it tells the framework which format to use, rather than it having to guess.
Try this
Dim FormatString As String = ""
Dim SampleDate As DateTime
SampleDate = Now()
FormatString = Format(SampleDate,"dd-MM-yy")
For reasons I don't pretend to understand calculated fields that are set to return a date return the value in code in this format:
"datetime;#2015-04-25 00:00:00"
so dim myDate as datetime = oMasterItem("Contract End Date") fails, and you can't cast the value either.
How do I convert that to a real date format without doing string manipulation ?
(or am I missing something obvious?)
Many thanks!
Check this out:
SharePoint - get value of calculated field without manual parsing
You can do it by:
SPFieldCalculated cf = (SPFieldCalculated)myItem.Fields["CIDandTitle"];
string value = cf.GetFieldValueForEdit(myItem["CIDandTitle"]);
or
string value = cf.GetFieldValueAsText(myItem["CIDandTitle"]);