我已阅读此问题以获取字符串的第一个字符.有没有办法从 C# 中的字符串中获取前 n 个字符?
I have read this question to get first char of the string. Is there a way to get the first n number of characters from a string in C#?
你可以使用 Enumerable.Take 喜欢:
char[] array = yourStringVariable.Take(5).ToArray();
或者您可以使用 String.子字符串.
string str = yourStringVariable.Substring(0,5);
请记住,如果字符串的长度小于所需的字符,String.Substring
可能会引发异常.
Remember that String.Substring
could throw an exception in case of string's length less than the characters required.
如果您想以字符串形式返回结果,则可以使用:
If you want to get the result back in string then you can use:
使用String Constructor和LINQ的Take
string firstFivChar = new string(yourStringVariable.Take(5).ToArray());
该方法的优点是不会事先检查长度.
The plus with the approach is not checking for length before hand.
String.Substring
进行错误检查String.Substring
with error checking喜欢:
string firstFivCharWithSubString =
!String.IsNullOrWhiteSpace(yourStringVariable) && yourStringVariable.Length >= 5
? yourStringVariable.Substring(0, 5)
: yourStringVariable;
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