你需要GetAbbreviatedMonthName

var month = 5;
var cultureSwe = "sv-SE";
var monthSwe = CultureInfo.CreateSpecificCulture(cultureSwe).DateTimeFormat.GetAbbreviatedMonthName(month);
Console.WriteLine(monthSwe);

var cultureEn = "en-US";
var monthEn = CultureInfo.CreateSpecificCulture(cultureEn).DateTimeFormat.GetAbbreviatedMonthName(month);
Console.WriteLine(monthEn);

输出

maj
may

你需要GetAbbreviatedMonthName

你可以用下面的方法得到它，

DateTimeFormatInfo mfi = new DateTimeFormatInfo();
string strMonthName = mfi.GetMonthName(8).ToString(); //August

现在，获取前三个字符

string shortMonthName = strMonthName.Substring(0, 3); //Aug

你也可以这样做来获取当前月份:

string monthName = CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName(DateTime.Now.Month);

这应该返回月份索引(1-12)中的月份文本(January - December)

int monthNumber = 1; //1-12  
string monthName = new DateTimeFormatInfo().GetMonthName(monthNumber);