I worked now in a dynamic ASP.NET C# web application that connects to a Sybase database using ODBC and my main problem is the conversion between datetime and string data types in my application.
The database saves the datetime data in the following form:-
7/11/2011 05:05:05
I think it is in the pattern of "MM/dd/yyyy hh:mm:ss"
I need to call a web service and pass some datetime parameters to get the correct output.
The static datetime format that is accepted by the web service is:-
11/07/11 09:09:09
I think it is in the pattern of "dd/MM/yy hh:mm:ss"
I tried using the following functions separately
string s = d.toString(string format)
DateTime d = Convert.ToDateTime(string s)
DateTime d = s.Datetime.Parse(string format)
DateTime d = s.Datetime.ParseExact(string format)
to convert the dates I got from the database to be suitable to be passed to the web service but it always gives me different exceptions like:-
Exception:System.FormatException: String was not recognized as a valid DateTime. at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) at System.DateTime.Parse(String s) at WebApplication1.WebForm1.callWebservice()
I do not know how I should use and convert dates in the proper way and I get disappointed as I try many examples and functions but I can not get the right methodlogy.
I hope that I find someone who could help and Thanks in advance…..
follow the link, there’s everything about DateTime Formatting:
http://www.csharp-examples.net/string-format-datetime/