Question

Given a string "15:30:20" and "2011-09-02 15:30:20",
How can I dynamically check if a given string contains date or not?

"15:30:20" -> Not Valid

"2011-09-02 15:30:20" => Valid

Answer 1

Use DateTime.TryParseExact Method.

string []format = new string []{"yyyy-MM-dd HH:mm:ss"};
string value = "2011-09-02 15:30:20";
DateTime datetime;

if (DateTime.TryParseExact(value, format, System.Globalization.CultureInfo.InvariantCulture,System.Globalization.DateTimeStyles.NoCurrentDateDefault  , out datetime))
   Console.WriteLine("Valid  : " + datetime);
else
  Console.WriteLine("Invalid");