两位数年份转换为四位数年份 [英] Convert a two digit year to a four digit year

问题描述

这是最佳实践的问题。我有一个实用程序，在两位数年份需要为一个字符串，我需要将其转换为四位数年份为字符串。现在我做的。

This is a question of best practices. I have a utility that takes in a two digit year as a string and I need to convert it to a four digit year as a string. right now I do

//DOB's format is "MMM (D)D YY" that first digit of the day is not there for numbers 1-9
string tmpYear = rowIn.DOB.Substring(rowIn.DOB.Length - 3, 2); //-3 because it is 0 indexed
if (Convert.ToInt16(tmpYear) > 50)
    tmpYear = String.Format("19{0}", tmpYear);
else
    tmpYear = String.Format("20{0}", tmpYear);

我相信我做它可怕的错误，任何指针？

I am sure I am doing it horribly wrong, any pointers?

推荐答案

在.NET框架有没有你想要的到底是什么方法：

The .NET framework has a method that does exactly what you want:

int fourDigitYear = CultureInfo.CurrentCulture.Calendar.ToFourDigitYear(twoDigitYear)

这样，你将正确地坚持当前的区域设置，控制面板（或组策略）中定义的：

That way you will correctly adhere to current regional settings as defined in Control Panel (or group policy):

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