C#DateTime.TryParse(String，DateTime)
示例
//将指定的日期和时间的字符串表示形式转换为等效的DateTime并返回一个值，该值指示转换是否成功
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);
}