请问验证日期的正则表达式如何写啊？？

Question

sReg = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/
(yyyy-mm-dd或者yyyy/mm/dd")
sReg = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/
标准格式为yyyy-mm-dd hh:mm:ss或者yyyy/mm/dd hh:mm:ss

Answer 1

string yourString = "2003-03-03";
try
{
    DataTime.parse(yourString);
}
catch
{
    MessageBox.show("错误的日期");
}

Answer 2

string datestr="2000-10-10";
string strRex=@"^([1-2]{1}[0-9]{3}(-|\/){1}[0-1]?[0-9]{1}(-|\/){1}[0-3]?[0-9]{1})?$";
Regex MyRegex=new Regex(strRex,RegexOptions.IgnoreCase);
Match MyMatch=MyRegex.Match(datestr);
bool  ls=MyMatch.Success;
Console.WriteLine(ls.ToString());
Console.ReadLine();