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freeCodeCamp/guide/chinese/csharp/is/index.md
2018-10-16 21:32:40 +05:30

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---
title: is
localeTitle: 是
---
## 是
`is`关键字检查对象是否与给定类型兼容或者从C7开始针对模式测试表达式。
#### 更多信息:
* [C参考](https://docs.microsoft.com/dotnet/csharp/language-reference/keywords/is)