25 lines
520 B
Markdown
25 lines
520 B
Markdown
|
---
|
|||
|
|
title: Substring
|
|||
|
|
localeTitle: 子
|
|||
|
|
---
# 子
|
|||
|
|
|
|||
|
|
`Substring`提取字符串值的一部分。它与2个整数参数一起使用，第一个是第一个字符的位置（以索引0开头），第二个是所需的字符长度。
|
|||
|
|
|
|||
|
|
## 例
|
|||
|
|
```
|
|||
|
|
string firstSentence = "Apple, I have.";
|
|||
|
|
string secondSentence = "I have a Pen.";
|
|||
|
|
|
|||
|
|
string apple = firstSentence.Substring(0,5);
|
|||
|
|
string pen = secondSentence.Substring(9,3);
|
|||
|
|
|
|||
|
|
Console.WriteLine(apple);
|
|||
|
|
Console.WriteLine(pen);
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 输出：
|
|||
|
|
```
|
|||
|
|
>Apple
|
|||
|
|
>Pen
|
|||
|
|
|
|||
|
|
```
|