[英]Validating input with Regex
I need to validate input to my application. 我需要验证输入到我的应用程序。 The input is a formatted string that may contain parts of a Date, eg: 输入是一个格式化的字符串,其中可能包含日期的一部分,例如:
{0:yy}{0:MM}{0:dd}_{0:hh}{0:mm}{0:ss}-SOME OTHER TEXT
sometext{0:yyyy}{0:MM}{0:dd}mORETEXT
The input doesn't have to contain those parts of a date, but if it does, I need them to be valid format items that can be used by String.Format()
method. 输入不必包含日期的那些部分,但是如果包含,我需要它们是可以由String.Format()
方法使用的有效格式项。 I believe I should validate using Regular Expressions
, but I am not good at it. 我相信我应该使用Regular Expressions
进行验证,但是我并不擅长于此。
Could you please help? 能否请你帮忙?
Given our back-and-forth via comments, I think the what you are looking for is: 考虑到我们的来回评论,我认为您正在寻找的是:
Regex curlyThings = new Regex(@"\{0:.*?\}");
Regex kosherCurlyThings = new Regex(@"\{0:(yy|yyyy|MM|dd|hh|mm|ss)\}");
MatchCollection matchCollection = curlyThings.Matches("CG{0:yyyy}-{0:MM}-{0:dd}asdf{0:GARBAGE}.csv");
foreach(Match match in matchCollection)
{
if(!kosherCurlyThings.IsMatch(match.Value))
{
Console.WriteLine("{0} isn't kosher!", match.Value);
}
}
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