如何在foreach中重复一个循环

Question

大家好，你怎么能在 foreach 中重复一次迭代？

foreach (string line in File.ReadLines("file.txt"))
{
     // now line == "account", next line == "account1"
     if (line.Contains("a"))
         //next loop take "account1";
     else
        // need to set that next loop will take line == "account" again
}

怎么做？

Answer 1

虽然我不完全理解你的例子，但我想我理解你的问题。我遇到了同样的问题，并且能够想出一个解决方案：在 foreach 中包含一个 while 循环。在您的示例中，它看起来像这样：

foreach (string line in File.ReadLines("file.txt"))
{
    bool repeat = true;
    while (repeat)
    {
        // now line == "account", next line == "account1"
        if (line.Contains("a"))
        {
            //do your logic for a break-out case
            repeat = false;
        }
        else 
        {
          //do your logic for a repeat case on the same foreach element
          //in this instance you'll need to add an "a" to the line at some point, to avoid an infinite loop.
        }
     }
}

我知道我玩游戏已经很晚了，但希望这对遇到同样问题的其他人有所帮助。