StreamReader에서 base64로 인코딩 된 콘텐츠를 검색 하시겠습니까?

Question

IIS의 SMTP badmail 폴더에서 NDR 파일을 구문 분석해야합니다. NDR에 첨부 된 내용은 base64로 인코딩됩니다. 그것이 내가 얻을 필요가있는 것입니다. 나는 StreamReader를 사용하여 하나의 라인이 되길 바랬지 만, Perforam이 .ReadLine 일 때 별도의 라인이되기를 바랬다. 여기

은 NDR 샘플이다

 
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X-OriginalArrivalTime: 12 Nov 2009 16:56:11.0813 (UTC) FILETIME=[09CED550:01CA63B9] 

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Answer 1

이 정규 표현식은 base64로 문자열과 일치하고 디코딩 :

Match m = Regex.Match(
    File.ReadAllText(@"c:\edit1.txt"), 
    @"X-OriginalArrivalTime:.*?\r\n\r\n([\s\S]*)\r\n\r\n"); 
byte[] data = Convert.FromBase64String(m.Groups[1].Value); 

정규 표현식을 사용하지 않으려면, 당신은 당신이 X-OriginalArrivalTime 헤더를 찾을 때까지 모든 라인을 건너을 시도 할 수 있습니다. 거기에서 빈 줄을 찾거나 스트림을 끝낼 때까지 모든 줄을 유지할 수 있습니다.

Answer 2

대신 Read() 방법을 사용하여 시도.