计算周岁
/// <summary>
/// 获取周岁
/// </summary>
/// <param name="birthDay">年-月-日</param>
/// <returns></returns>
public static int GetYearOld(string birthDay)
{
DateTime dt = Convert.ToDateTime(birthDay);
DateTime now = DateTime.Now;
int age = now.Year - dt.Year;
if (now.Month < dt.Month)
age--;
else if (now.Month == dt.Month && now.Day < dt.Day)
age--;
return age;
}
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