检查元素是否在C#的Collection中
要检查元素是否在Collection中，代码如下-
示例
using System;
using System.Collections.ObjectModel;
public class Demo {
public static void Main(){
Collection<int> col = new Collection<int>();
col.Add(10);
col.Add(20);
col.Add(30);
col.Add(40);
col.Add(50);
col.Add(60);
col.Add(70);
col.Add(80);
Console.WriteLine("Elements in the Collection...");
foreach(int val in col){
Console.WriteLine(val);
}
Console.WriteLine("Does the collection has the element 70? = "+col.Contains(70));
}
}输出结果
这将产生以下输出-
Elements in the Collection... 10 20 30 40 50 60 70 80 Does the collection has the element 70? = True
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("John");
col.Add("Gary");
col.Add("Tom");
col.Add("Brad");
col.Add("Katie");
col.Add("Andy");
col.Add("Nathan");
Console.WriteLine("Elements in the Collection...");
foreach(string val in col){
Console.WriteLine(val);
}
Console.WriteLine("Does the collection has the value Bradley? = "+col.Contains("Bradley"));
}
}输出结果
这将产生以下输出-
Elements in the Collection... John Gary Tom Brad Katie Andy Nathan Does the collection has the value Bradley? = False