25 lines
520 B
Markdown
25 lines
520 B
Markdown
---
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title: Substring
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localeTitle: 子
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---
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# 子
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`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。
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## 例
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```
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string firstSentence = "Apple, I have.";
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string secondSentence = "I have a Pen.";
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string apple = firstSentence.Substring(0,5);
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string pen = secondSentence.Substring(9,3);
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Console.WriteLine(apple);
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Console.WriteLine(pen);
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```
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## 输出：
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```
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>Apple
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>Pen
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``` |