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C# 遍历数组


遍历数组

您可以使用 for 循环遍历数组元素,并使用 Length 属性指定循环应运行的次数。

以下示例输出 **cars** 数组中的所有元素

示例

string[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
for (int i = 0; i < cars.Length; i++) 
{
  Console.WriteLine(cars[i]);
}

自己试试 »


Foreach 循环

还有一个 foreach 循环,它专门用于循环遍历 **数组** 中的元素

语法

foreach (type variableName in arrayName) 
{
  // code block to be executed
}

以下示例使用 foreach 循环输出 **cars** 数组中的所有元素

示例

string[] cars = {"Volvo", "BMW", "Ford", "Mazda"};
foreach (string i in cars) 
{
  Console.WriteLine(i);
}

自己试试 »

上面的示例可以这样理解:**对于每个** string 元素(称为 **i** - 如 **i**ndex)在 **cars** 中,打印出 **i** 的值。

如果您比较 for 循环和 foreach 循环,您会发现 foreach 方法更容易编写,它不需要计数器(使用 Length 属性),并且更易读。


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