DateTime.TryParse(String DateTime)

// Converts the specified string representation of a date and time to its DateTime equivalent and returns a value that indicates whether the conversion succeeded

string[] dateTimeStrings = new []{
    "14:23 22 Jul 2016",
    "99:23 2x Jul 2016",
    "22/7/2016 14:23:00"
};

foreach(var dateTimeString in dateTimeStrings){

    DateTime dateTime;
    
    bool wasParsed = DateTime.TryParse(dateTimeString, out dateTime);
    
    string result = dateTimeString +
        (wasParsed 
            ? $"was parsed to {dateTime}" 
            : "can't be parsed to DateTime");
            
    Console.WriteLine(result);
}