如何退出 C# 中的 foreach 循环? [英] How do I exit a foreach loop in C#?

问题描述

foreach (var name in parent.names)
{
    if name.lastname == null)
    {
        Violated = true;
        this.message = "lastname reqd";
    }

    if (!Violated)
    {
        Violated = !(name.firstname == null) ? false : true;
        if (ruleViolated)
            this.message = "firstname reqd";
    }
}

只要有违反，我就想立即退出 foreach 循环.我该怎么做?

Whenever violated is true, I want to get out of the foreach loop immediately. How do I do it?

推荐答案

使用 break.

与您的问题无关，我在您的代码中看到了这一行:

Unrelated to your question, I see in your code the line:

Violated = !(name.firstname == null) ? false : true;

在这一行中，您使用一个布尔值 (name.firstname == null).然后，对它应用 ! 运算符.然后，如果值为 true，则将 Violated 设置为 false；否则为真.所以基本上， Violated 被设置为与原始表达式 (name.firstname == null) 相同的值.为什么不使用它，如:

In this line, you take a boolean value (name.firstname == null). Then, you apply the ! operator to it. Then, if the value is true, you set Violated to false; otherwise to true. So basically, Violated is set to the same value as the original expression (name.firstname == null). Why not use that, as in:

Violated = (name.firstname == null);

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