Finding if a string contains a date and time

Question

I am working on a project where I am reading in a file which could come in two different formats, one includes a date and time and the other doesn\'t.

When I read i

Answer 1

Update 2: Found out using DateTime.TryParseExact is a much better way that using Regex Expressions

DateTime myDate;
if (DateTime.TryParseExact(inputString, "dd-MM-yyyy hh:mm:ss", 
    CultureInfo.InvariantCulture, DateTimeStyles.None, out myDate))
{
    //String has Date and Time
}
else
{
    //String has only Date Portion    
}