Linq查询-根据首个字母b/w两个范围查找字符串 [英] Linq query - find strings based upon first letter b/w two ranges

问题描述

我们有一个包含国家名称的列表.我们需要从列表b/w两个字母中查找国家/地区的名称.类似于所有国家的名称，名称以B/w A-G开头，依此类推.我们创建以下linq查询，但它很丑.

We have a list containing names of countries. We need to find names of countries from list b/w two letters. Like names of all countries with name starting b/w A-G and so on. We create following linq query but its ugly.

var countryAG = from elements in countryList
where elements.StartsWith("A") || 
elements.StartsWith("B") || 
elements.StartsWith("C") || 
elements.StartsWith("D") || 
elements.StartsWith("E") || 
elements.StartsWith("F") || 
elements.StartsWith("G") || 
elements.StartsWith("H") 
select elements;

在C#中创建countryList的地方

where countryList is created in C#

List< string> countryList = new List< string>();

是否有帮助或其他有效方法来完成上述任务?

Any help or any other efficient way to accomplish above task?

推荐答案

var countryAG = from elements in countryList
                where elements[0] >= 'A' && elements[0] <= 'H'
                select elements;

字符实际上只是数字，因此您可以这样比较它们

Chars are just numbers really, thus you can compare them as such

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