anyone know whats the best way to get date of birth im only able to find date and time and trying to parse it as a string wont update or delete from the database i get this error
String was not recognized as a valid DateTime.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.FormatException: String was not recognized as a valid DateTime.
Source Error:
Line 96: int labID =
int.Parse(hdfID.Value.ToString()); Line 97: Line 98:
_strMessage(objLab.commitUpdate(labID, txt_patientidI.Text, txt_testCodeI.Text, txt_patientcodeI.Text, txt_ageI.Text,
txt_refrangeI.Text, txt_result1I.Text, txt_result2I.Text,
txt_resultDescI.Text, txt_sexI.Text, txt_testTypeI.Text,
txt_unitsI.Text, txt_abnormalI.Text, Line 99:
(DateTime.ParseExact(txt_dobI.Text,"yyyy/mm/dd",null))),"update");
Line 100: _subRebind();
what should i use for date of birth im using sql server c# .net want to parse that to string to show in my textbox thanks
Try using DateTime.ParseExact. instead of DateTime.Parse
this.Text="22/11/2009";
DateTime date = DateTime.ParseExact(this.Text, "dd/MM/yyyy", null);
DateTime is the structure you'll need to use.
Whenever you just want the date, you can use DateTime.Date to get just the date component.
Now, if you're parsing something in a format which is different to what one would generally expect, you can define the format the parser will look at by using the ParseExact function instead.
DateTime myDate = DateTime.ParseExact(txt_dobI.Text,"dd/MM/yyyy",null);
The list of the actual formats can be obtained from here http://msdn.microsoft.com/en-us/library/8kb3ddd4%28v=vs.110%29.aspx
However in short
dd/MM/yyyy - British/EU/Lots of Places Format
MM/dd/yyyy - American Format
yyyy/MM/dd - Standard Format
I was working with wpf application I did this and it worked out for me.
DateTime DOB = DateTime.ParseExact(DOBText.Text.ToString(),
"dd/MM/yyyy", CultureInfo.InvariantCulture);
Related
I´ve been trying to add some lines of a .csv document to a SQL Database ,but in a point i get this exception:
SYSTEM.FORMATEXCEPTION: STRING '0000-00-00 00:00:01' WAS NOT RECOGNIZED AS A VALID DATETIME.
AT SYSTEM.DATETIMEPARSE.PARSE(READONLYSPAN`1 S, DATETIMEFORMATINFO DTFI, DATETIMESTYLES STYLES)
AT SYSTEM.DATETIME.PARSE(STRING S)
AT FRAME2020.OBJETOSERVICIOS.DEVOLVERSERVICIOS(STRING[] LISTA) IN
D:\TRABAJO\FRAME2020\FRAME2020\CONEXIONBDD.CS:LINE
And i dont know how to solve it , i tried with try/except but it doesnt work with my approach ,any recommendations?
Problem is in your date which you try to set: 0000-00-00 00:00:01, there isn't day 0, month 0 and year 0.
Minimal DateTime is 1-1-0001 00:00:00
You haven't showed us any code, so I'm making some assumptions here. It looks like you're using DateTime.Parse to parse a column in your csv source that you expect to be a DateTime. However, your source has values in that column which do not parse into a valid DateTime. Such as 0000-00-00 00:00:01.
Others have already pointed out that 0000-00-00 00:00:01 is not a valid DateTime. In order to address this issue, you can use a different method to parse that column. For example, DateTime.TryParse. This will attempt to parse a string into a DateTime and return false if it fails or true if it succeeds.
string s = "0000-00-00 00:00:01";
if (!DateTime.TryParse(s, out DateTime dt))
{
// The string could not be parsed to a DateTime.
}
else
{
// The string was successfully parsed and the variable dt will have the parsed
// DateTime.
}
Then once you have that, you'll know if you successfully parsed the string into a DateTime and you can do something other than throw a FormatException when it fails.
I got this problem about Convert String to Datetime.
This is my code:
#if (Convert.ToDateTime(item.EXPIRED_DATE) <= DateTime.Now)
{
<td><span style="color:red;">#item.EXPIRED_DATE</span></td>
}
When I run it on my localhost, it worked. But when I publish it on Webserver, I got this Error Message:
Exception Details: System.FormatException: String was not recognized as a valid DateTime.
And this is item.EXPIRED_DATE value
"31/01/2018"
Please help me!
You could make use of DateTime.ParseExact:
DateTime.ParseExact(item.EXPIRED_DATE, "dd/MM/yyyy", CultureInfo.InvariantCulture);
Why you got the error you have mentioned?
As you could read here Convert.ToDateTime, since the value you pass is not null, would invoke DateTime.Parse and return its result. The DateTime.Parse as it is mentioned here (look at the question: Which method do I call?) parses a date and time string by using the conventions of the current culture. So your program current's cutlure is not has not a format for DateTime as the one you want to use. This is why you have to use DateTime.ParseExact method providing the correct format.
I have an ASP site where I read two dates from two fields.
The dates are generated using JavaScript and one of the two dates I need to read pass but the other doesn't. Even though they are made the exact same way.
So as you see here from my Immediate Window:
datepicker_start.Value
"03/10/2016"
datepicker_end.Value
"03/23/2016"
The first one parses fine, the second one does not:
DateTime start = DateTime.Parse(datepicker_start.Value);
DateTime end = DateTime.Parse(datepicker_end.Value);
It throws a FormatException on the end date:
DateTime.Parse(datepicker_end.Value)
threw an exception of type
System.FormatException: The String wasn't recognized as a valid
DateTime.
I cannot understand why this is happening. If you need anything other than what I gave already please let me know as this is truly puzzling.
DateTime.Parse uses standard date and time format of your current culture settings.
Probably your culture setting has dd/MM/yyyy as a standard format and since there is no 23rd month, your second line throws FormatException.
I would suggest to use DateTime.ParseExact with a custom format like;
DateTime end = DateTime.ParseExact(datepicker_end.Value,
"MM/dd/yyyy",
CultureInfo.InvariantCulture);
For example; if you debug your code, your start will be 3rd of October, not 10th of March.
I have an issue similar to this > Format exception String was not recognized as a valid DateTime
However, my spec requires a date format of ddMMyyyy, therefore I have modified my code but I am still getting the same error
DateTime now = DateTime.Now;
DateTime dt = DateTime.ParseExact(now.ToString(), #"ddMMyyyy", CultureInfo.InvariantCulture);
I am unclear why.
You code fails because you are attempting to parse a date in the format ddMMyyyy, when by default DateTime.ToString() will produce a format with both date and time in the current culture.
For myself in Australia that would be dd/MM/yyy hh:mm:ss p e.g. 11/10/2013 11:07:03 AM
You must realise is that the DateTime object actually stores a date as individual components (e.g. day, month, year) that only needs to be format when you output the value into whatever format you desire.
E.g.
DateTime now = DateTime.Now;
string formattedDate = now.ToString("ddMMyyyy", DateTimeFormatInfo.InvariantInfo);
For more information see the api doc:
http://msdn.microsoft.com/en-us/library/8tfzyc64.aspx
For ParseExact to work, the string coming in must match exactly the pattern matching. In the other question you mentioned, the text was coming from a web form where the format was specified to be exactly one format.
In your case you generated the date using DateTime.Now.ToString() which will not be in the format ddMMyyyy. If you want to make the date round trip, you need to specify the format both places:
DateTime now = DateTime.Now;
DateTime dt = DateTime.ParseExact(now.ToString("ddMMyyyy"), #"ddMMyyyy", CultureInfo.InvariantCulture);
Debug your code and look at what the result of now.ToString() is, it's is not in the format of "ddMMyyyy", which is why the parse is failing. If you want to output now as a string in the ddMMyyy format, then try now.ToSTring("ddMMyyyy") instead.
now.ToString() does not return a string formatted in that way. Try using now.ToString("ddMMyyyy").
You might be better off testing with a static string like "30041999"
I have a date time field to be saved and updated..my system datetime format is dd/MM/yyyy
after saving it in sql server ..while retrieving date i m displaying it in MM/dd/yy format.
I have some other date textboxes also in which I am by default displaying the current date using function
System.DateTime.Now.ToShortTimeString();
or say
DateTime.Today.ToString("MM/dd/yyyy");
while updating data it gives me error
"string was not recognized as valid datetime"
on the line where i m using Convert.Todatetime(Textbox.Text) Function in update method
/ is the replacement character for the current culture's date separator, so if you want to enforce it use CultureInfo.InvariantCulture:
DateTime.Now.ToString("MM/dd/yyyy", CultureInfo.InvariantCulture);
See: The "/" Custom Format Specifier
Use ParseExcat
var dateTime = DateTime.ParseExact(Textbox.Text,
"MM/dd/yyyy",CultureInfo.InvariantCulture);