获取或设置C#中Collection中指定索引处的元素
要获取或设置Collection中指定索引处的元素,代码如下-
示例
using System;using System.Collections.ObjectModel;
public class Demo {
public static void Main() {
Collection<string> col = new Collection<string>();
col.Add("Laptop");
col.Add("Desktop");
col.Add("Notebook");
col.Add("Ultrabook");
col.Add("Tablet");
col.Add("Headphone");
col.Add("Speaker");
Console.WriteLine("Elements in Collection...");
foreach(string str in col) {
Console.WriteLine(str);
}
Console.WriteLine("Element at index 3 = " + col[3]);
Console.WriteLine("Element at index 4 = " + col[4]);
}
}
输出结果
这将产生以下输出-
Elements in Collection...Laptop
Desktop
Notebook
Ultrabook
Tablet
Headphone
Speaker
Element at index 3 = Ultrabook
Element at index 4 = Tablet
示例
让我们看另一个例子-
using System;using System.Collections.ObjectModel;
public class Demo {
public static void Main() {
Collection<string> col = new Collection<string>();
col.Add("Laptop");
col.Add("Desktop");
col.Add("Notebook");
col.Add("Ultrabook");
col.Add("Tablet");
col.Add("Headphone");
col.Add("Speaker");
Console.WriteLine("Elements in Collection...");
foreach(string str in col) {
Console.WriteLine(str);
}
Console.WriteLine("Element at index 3 = " + col[3]);
col[3] = "SSD";
Console.WriteLine("Element at index 3 (Updated) = " + col[3]);
}
}
输出结果
这将产生以下输出-
Elements in Collection...Laptop
Desktop
Notebook
Ultrabook
Tablet
Headphone
Speaker
Element at index 3 = Ultrabook
Element at index 3 (Updated) = SSD
以上是 获取或设置C#中Collection中指定索引处的元素 的全部内容, 来源链接: utcz.com/z/331564.html