DateTime format

Question

I have a datetime in my variable (datetime i am selected from three dropdownlist and i dont want any connection between these dropdown just display 31 days,12 months and 50 years that i showed in my project and i take that datetime to a variable now.), Now I want to check weather the date is valid or not. ie,if i select 31-02-2017 actually i dont want to check year where it is leap year or not also when i select this date into my variable i just want to show an exception . How can we use isdate function for this Problem. Anyone Please help me.. Thanks in Advance

Pranay Rana · Answer

You can create extension method, because this can help you through out project public static class Extension { public static bool IsStringValidDate( this string dtstr) { DateTime dt = DateTime.Now();//or can be min date bool isValid = DateTime.TryParseExact( dtstr, "MM/dd/yyyy" , CultureInfo.InvariantCulture, DateTimeStyles.None, out dt); return isValid; } } for out variable you can also follow C# 7.0 systax public static class Extension { public static bool IsStringValidDate( this string dtstr) { bool isValid = DateTime.TryParseExact( dtstr, "MM/dd/yyyy" , CultureInfo.InvariantCulture, DateTimeStyles.None, out _); return isValid; } }

ali tuncer · Answer

you can use DateTime.TryParse public static bool IsDate( string txtDate) { DateTime tempDate; return DateTime.TryParse(txtDate, out tempDate); } Console.WriteLine(IsDate( "02/29/2018" ));

DateTime format

Answers (2)