C# DateTime.TryParse() could parse invalid date

Question

            bool status = false;
            DateTime val;
            if (DateTime.TryParse("7.16", out val) == true)
                status= true;
            else
                status= false;

please run the code and see DateTime.TryParse() can parse 7.16 where as 7.16 is not a valid date. is it any bug?

rather this code properly worked.

            bool status = false;
            DateTime d;
            if (DateTime.TryParseExact("13/15/2021", new string[] { "dd/MM/yyyy", "MM/dd/yyyy" }, CultureInfo.InvariantCulture, DateTimeStyles.None, out d))
            {
                status = true;
            }
            else
            {
                status = false;
            }

            return status;

Thanks

Answer 1

@T.Zacks , based on my research, this is not a bug.

Please refer to the DateParse.cs Source Code.(3395 rows)

When we only set the month and the day, year is the current year.

If the year is missing, assume the current year. (You can see it in the link)

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Answer 2

please run the code and see DateTime.TryParse() can parse 7.16 where as 7.16 is not a valid date. is it any bug?

No. 7.16 is a valid date format.

DateTime val;  
Console.WriteLine(DateTime.TryParse("7.16", out val));  
Console.WriteLine(val);  

Results

True  
7/16/2021 12:00:00 AM  

If you expect a specific date format then continue to use TryParseExact() and/or add input validation so the user cannot submit "7.16".