如何获得英文字母的第n个字母

Is there any way to get nth letter of English alphabet? I want smt similar to this:

有办法得到第n个英文字母吗?我想要smt类似于:

string letter = EnglishAlphabet.GetLetter(5);
//result -> letter is 'E'

I want to use this according to count of my list. If there is 3 elements on my list so "D:D" is enough for me but there is 4 elements then "E:E". I want use this string here:

我想根据我的列表来使用这个。如果我的列表中有3个元素，那么D:D对我来说就足够了，但是有4个元素，那么E:E。我想用这个字符串:

 Excel.Range chartRange;    
 Excel.ChartObjects xlCharts = (Excel.ChartObjects)xlWorkSheet.ChartObjects(Type.Missing);
 Excel.ChartObject myChart = xlCharts.Add(5, 5, 540, 160);
 Excel.Chart chartPage = myChart.Chart;    
 chartRange = xlWorkSheet.get_Range("A:A", "D:D");//"D:D" changes according to size of the list??

Any suggestions? Thanks

有什么建议吗?谢谢

2 个解决方案

#1

The simplest approach is:

最简单的方法是:

public string GetLetter(int value)
{
    char letter = (char) ('A' - 1 + value);
    return letter.ToString();
}

I'd personally change the return type to char though:

我个人将返回类型改为char:

public char GetLetter(int value)
{
    return (char) ('A' - 1 + value);
}

You might want to put some argument validation on there too though...

你也可以在上面加上一些论证。

#2

In Excel: =CHAR(64+A1) where A1 contains the value of n may suit.

在Excel中:=CHAR(64+A1)，其中A1包含n可能适合的值。

#1