有Java的标记符在C＃或替代方法相当于一个 [英] is there a equivalent of Java's labelled break in C# or a workaround

问题描述

我把一些Java代码到C＃，并已发现了一些标有破发的语句（如）

I am converting some Java code to C# and have found a few labelled "break" statements (e.g.)

label1:
    while (somethingA) {
       ...
        while (somethingB) {
            if (condition) {
                break label1;
            }
        }
     }

有没有在C＃中的等价（当前的读数表明没有），如果不是有比（说）有布尔标志指示是否在每个循环结束时（例如）

Is there an equivalent in C# (current reading suggests not) and if not is there any conversion other than (say) having bool flags to indicate whether to break at each loop end (e.g.)

bool label1 = false;
while (somethingA)
{
   ...
    while (somethingB)
    {
        if (condition)
        {
            label1 = true;
            break;
        }
    }
    if (label1)
    {
        break;
    }
}
// breaks to here

我会有兴趣，为什么C＃没有这个，因为它似乎不是很邪恶的。

I'd be interested as to why C# doesn't have this as it doesn't seem to be very evil.

推荐答案

可以只需使用 转到 ，将直接跳转到一个标签。

You can just use goto to jump directly to a label.

while (somethingA)
{
    // ...
    while (somethingB)
    {
        if (condition)
        {
            goto label1;
        }
    }
}
label1:
   // ...

在类似C语言中，转到往往最终打破嵌套循环清洁剂，而不是跟踪布尔变量，并反复检查他们在每个循环结束

In C-like languages, goto often ends up cleaner for breaking nested loops, as opposed to keeping track of boolean variables and repeatedly checking them at the end of each loop.

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