C# 测试字符串是否为整数?

问题描述

我只是好奇是否在 C# 语言或 .NET 框架中内置了一些东西来测试某个东西是否为整数

I'm just curious as to whether there is something built into either the C# language or the .NET Framework that tests to see if something is an integer

if (x is an int)
   // Do something

在我看来可能有，但我只是一年级的编程学生，所以我不知道.

It seems to me that there might be, but I am only a first-year programming student, so I don't know.

推荐答案

使用 int.TryParse 方法.

string x = "42";
if(int.TryParse(x, out int value))
  // Do something

如果解析成功，则返回true，输出结果为整数.

If it successfully parses it will return true, and the out result will have its value as an integer.

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