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string format of Date


string format of Date

By : user2948755
Date : November 15 2020, 06:54 AM
like below fixes the issue Three issues here:
the regex doesn't capture the entire date and time you're just getting one part of the regex result (i.e. you're getting a single group instead of the value for the entire match) your format string uses zzz when it should be FF for hundredths or FFF for thousands
code :
string lineOfLog = "- Started 28/12/2014 16:53:47.48";
string dateFormat = "dd/MM/yyyy HH:mm:ss.FF";           
string pattern1 = @"(\d+)/(\d+)/(\d+) (\d+):(\d+):(\d+)\.(\d+)";

Match match1 = Regex.Match( lineOfLog, pattern1, RegexOptions.IgnoreCase );
if( match1.Success )
{
    var dateString = match1.Value; // note the change here
    var d = DateTime.ParseExact( dateString, dateFormat, CultureInfo.InvariantCulture );
}


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Manipulating a text string (for the purpose of converting a date format to custom date format)

Manipulating a text string (for the purpose of converting a date format to custom date format)


By : user2800536
Date : March 29 2020, 07:55 AM
this one helps. I have dates being output in this format: 14-MAR-2011 (DD-MMM-YYYY) for example. , Yes. You can try:
code :
var value = $.datepicker.parseDate("dd-M-yy",date);
return $.datepicker.formatDate("dd\mm",value);
$('.date').each(function(idx,elt) {
  var value = $.datepicker.parseDate("dd-M-yy",$(elt).html());
  $(elt).html($.datepicker.formatDate("dd\mm",value));
});
How to test if date format string is a valid date format string in Oracle

How to test if date format string is a valid date format string in Oracle


By : user3718381
Date : March 29 2020, 07:55 AM
it fixes the issue I want users to be able to enter a date format string so they can specify how they want a date value to be displayed/entered. , you could create a function:
e.g:
code :
FUNCTION is_valid_date_format ( 
    p_format IN VARCHAR2 ) 
RETURN BOOLEAN IS
    l_date VARCHAR2(100) := NULL;
BEGIN
    l_date := TO_char( sysdate, p_format );
    RETURN TRUE;
EXCEPTION
    WHEN OTHERS THEN
        RETURN FALSE;
END is_valid_date_format;
IF is_valid_date_format('dd/mm/yyyy') THEN
IF INSTR(p_format,'HH')>0 OR INSTR(p_format,'HH24')>0 
OR INSTR(p_format,'MI')>0  OR INSTR(p_format,'SS')>0 THEN
    RETURN FALSE
END IF;
Trouble bringing in a string with d-MMM-yy format parse.exact to date but keeping date format and date type for sorting

Trouble bringing in a string with d-MMM-yy format parse.exact to date but keeping date format and date type for sorting


By : Sam
Date : March 29 2020, 07:55 AM
will help you SCENARIO: I am passing a datatable back as a DataGrids datasource. I am passing in a string field that is a date. I want to convert it to a date so that I can sort by it but I also want to maintain the same format that it was on the string that came in.
ISSUE: From some of my research it seems that the DateTime type is exactly that a datatype in whatever datatable that you put it in and is not formatable. So even though I bring in an unormal string date and convert it to a datetime via the DateTime.ParseExact, when I put it into my datetime field and try to format it (newRow["colX"] = colXDate.ToString("d-MMM-yy"); //as Scott had above) it still goes in as a set datetime format with hours...etc.
TryParseExact doesn't work on string with date and time while format include only date format

TryParseExact doesn't work on string with date and time while format include only date format


By : reglisse44
Date : March 29 2020, 07:55 AM
I wish this help you From documentation;
code :
string s = "01/06/2015 00:00:00";
DateTime dt;
if(DateTime.TryParseExact(s, "dd/MM/yyyy HH:mm:ss", CultureInfo.InvariantCulture,
                          DateTimeStyles.None, out dt))
{
    // Successfully parsing
}
How to convert a string date in european format to a valid mysql date format?

How to convert a string date in european format to a valid mysql date format?


By : user3667331
Date : March 29 2020, 07:55 AM
this will help you can directly use STR_TO_DATE() function as
STR_TO_DATE('1,1,2021','%d,%m,%Y')
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