CODEWITHSUNDEEP
c#parsingdatetimetryparse
jan kowalski
jan kowalski

Reputation: 199

Why DateTime.TryParse is receive error for simple input?

Why this code is receiving error for input like "8:16AM":

        string time = Console.ReadLine();
        DateTime outValue = DateTime.MinValue;

        bool error = DateTime.TryParseExact(time, "HH:mmtt" /*"hh:mmtt"*/, CultureInfo.InvariantCulture, DateTimeStyles.None, out outValue);

        Console.WriteLine(error);
        Console.WriteLine(outValue);
        Console.Read();

What should I set in order to accept such an input "8:16" and convert it to DateTime object ?

Upvotes: 0

Views: 60

Answers (3)

DevJoe
DevJoe

Reputation: 419

This happends because you write HH:mmtt. Try this:

bool error = DateTime.TryParseExact(time, "H:mm:tt" /*"h:mm:tt"*/,
CultureInfo.InvariantCulture, DateTimeStyles.None, out outValue);

Upvotes: 1

Artiom
Artiom

Reputation: 7847

It's caused by expecting two digits for hours.

You can add leading zero if it's missing.

    string time = Console.ReadLine();
    DateTime outValue = DateTime.MinValue;
    if (time.Length == 6)
       time = "0" + time;
    bool error = DateTime.TryParseExact(time, "HH:mmtt" /*"hh:mmtt"*/, CultureInfo.InvariantCulture, DateTimeStyles.None, out outValue);

    Console.WriteLine(error);
    Console.WriteLine(outValue);
    Console.Read();

But it's better to go with H:mmtt template as pointed by Jamiec

Upvotes: 1

Jamiec
Jamiec

Reputation: 136154

You've used HH which expects a 2 digit hour. You can either pass 08:16AM or change your HH to H.

Live example: http://rextester.com/IPNS3820

Upvotes: 5

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