Web有句俗语: 百姓日用而不知。我们c#程序员很喜欢,也非常习惯地用foreach。今天呢,我就带大家一起探索foreach,走,开始我们的旅程。 一、for语句用地好好的,为什么要提供一个foreach? for (var i = 0; i < 1… WebAug 16, 2024 · Before adding the code for the last button, you have to make your Student class IEnumerable. Do this now by adding code similar to the following: C#. class clsStudent { List Students; public IEnumerator GetEnumerator() { foreach (var student in Students) yield return student; } }
For Vs Foreach In C# - c-sharpcorner.com
WebAug 24, 2024 · for loop in C#. The for loop iterates through items until a certain condition is true. You give an initial statement, a condition for which the loop is to be iterated until it … IEnumerable and IEnumeratorare frequently used together. Although these interfaces are similar (and have similar names), they have different purposes. The IEnumerator interface provides iterative capability for a collection that is internal to a class. IEnumeratorrequires that you implement three methods: 1. The … See more The IEnumerable interface provides support for the foreach iteration. IEnumerable requires that you implement the GetEnumeratormethod. See more The following example demonstrates how to use these interfaces. In this example, the IEnumerator and IEnumerable interfaces are used … See more Initially, you might find it confusing to use these interfaces. The IEnumerator interface provides iteration over a collection-type object … See more The example in this article is kept as simple as possible to better explain the use of these interfaces. To make the code more robust and to make sure the code uses the current best practice guidelines, modify the code as … See more might and may for possibility
For Loop in C# with Examples - Dot Net Tutorials
Web是否效率高要在特定情况下比较他们的实现,以及支持foreach遍历的开销; 通常情况下来说,能用for的就不用foreach。用foreach, 是因为内部实现了foreach的机制,让我们使用 … WebApr 14, 2024 · foreach (string fruit in fruits) { Console.WriteLine(fruit); } } } We use the Split method to split a string into an array of substrings based on an array of delimiter characters. We limit the number of substrings returned to 3 and output each element to the console. WebC# provides an easy to use and more readable alternative to for loop, the foreach loop when working with arrays and collections to iterate through the items of arrays/collections. The foreach loop iterates through each … might and mayhem