C# 根据出生年月计算天数/计算X岁X月X天字符串

男娘i 2022-11-10 14:57 200阅读 0赞

1     public class TimeTool
     2     {
     3         //根据出生年月计算 整数天
     4         private static int GetAgeByBirthdate(DateTime birthdate)
     5         {
     6             DateTime now = DateTime.Now;
     7             int age = now.Year - birthdate.Year;
     8             if (now.Month < birthdate.Month || (now.Month == birthdate.Month && now.Day < birthdate.Day))
     9             {
    10                 age--;
    11             }
    12             return age < 0 ? 0 : age;
    13         }
               //根据出生年月计算 X岁或X月X天或X天
    14         public static string GetAgeByBirthday(DateTime birthday)
    15         {
    16             var currenttime = DateTime.Now;
    17             var diffTime = currenttime - birthday;
    18             if (diffTime.TotalDays >= 365)
    19             {
    20                 //年龄计算
    21                 return GetAgeByBirthdate(birthday).ToString() + "岁";
    22             }
    23             else
    24             {
    25                 //个月计算
    26                 var diffmonth = currenttime.Month - birthday.Month;
    27                 var day = currenttime.Day - birthday.Day;
    28                 if (day < 0)
    29                 {
    30                     diffmonth--;
    31                 }
    32                 if (diffmonth > 0)
    33                 {
    34                     DateTime newbirthday = birthday.AddMonths(diffmonth);
    35                     day = (int)((currenttime - newbirthday).TotalDays);
    36                     return diffmonth.ToString() + "个月" + (day == 0 ? "" : day.ToString() + "天");
    37                 }
    38                 else
    39                 {
    40                     //直接计算天
    41                     return ((int)(diffTime.TotalDays)).ToString() + "天";
    42                 }
    43             }
    44 
    45         }
    46     }