在 c#、Convert vs Parse 中获取输入的正确方法是什么

问题描述：

我在 c# 中看到了一些其他方法来从用户那里获取输入，这真的很令人困惑.我可以同时使用这两种方式来获取输入还是只用于浮动?

I saw some other ways to take input from user in c# and it's really confusing. Can I use both the way to take input or is it only for float?

是否有更多的输入方式?

Is there more ways to take input?

float myAge;

myAge = Convert.Toint64(Console.ReadLine());

对比

float myAge;

float myAge = float.Parse(Console.ReadLine());

答

我推荐 TryParse，以避免在用户没有提供有效浮点数时出现异常.

I would recommend TryParse, to avoid exceptions in case user does not provide a valid float.

float myAge;
float.TryParse(Console.ReadLine(), out myAge);

或在 1 行 float.TryParse(Console.ReadLine(), out float myAge);

TryParse 将返回一个布尔值，您可以使用它来检查该值是否为有效浮点数.

TryParse will return a bool you can use to check if the value is a valid float.

if(float.TryParse(Console.ReadLine(), out myAge)){
   //do stuff
}else{
    Console.WriteLine("You did not give a float");
}

double, int 也有这些方法.它不仅适用于 floats.

double, int have these methods too. Its not only for floats.