有什么好办法求今天的前三天的日期?
各位:
        如题,有什么好办法?

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AddDays(-1)
AddDays(-2)
DateTime.AddDays()
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Data.Today.Date.AddDays(-3)
基本上这样吧！
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DateTime.AddDays(-3)

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dt.AddDays(-3).ToString( "yyyyMMdd ")
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String strDt = "20070105 ";
strDt = System.Text.RegularExpressions.Regex.Replace(strDt,@ "(? <Y> ^\d{4})(? <M> \d{2})(? <D> \d{2}$) ", "${Y}-${M}-${D} ");

DateTime dt1 = DateTime.Parse(strDt);
DateTime dt2 = dt1.AddDays(-3);

Console.WriteLine( "result={0} ", dt2.ToString( "yyyyMMdd "));
Console.ReadLine();