要从StringCollection中删除所有字符串,代码如下-
using System; using System.Collections.Specialized; public class Demo { public static void Main() { StringCollection stringCol = new StringCollection(); String[] arr = new String[] { "100", "200", "300", "400", "500" }; Console.WriteLine("Array elements..."); foreach (string res in arr) { Console.WriteLine(res); } stringCol.AddRange(arr); Console.WriteLine("Does the specified string is in the StringCollection? = "+stringCol.Contains("800")); Console.WriteLine("Total number of elements = "+stringCol.Count); stringCol.Clear(); Console.WriteLine("\nWe have removed all the elements now.."); Console.WriteLine("Total number of elements now = "+stringCol.Count); } }
输出结果
这将产生以下输出-
Array elements... 100 200 300 400 500 Does the specified string is in the StringCollection? = False Total number of elements = 5 We have removed all the elements now.. Total number of elements now = 0
让我们看另一个例子-
using System; using System.Collections.Specialized; public class Demo { public static void Main() { StringCollection stringCol = new StringCollection(); String[] arr = new String[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" }; Console.WriteLine("Array elements..."); foreach (string res in arr) { Console.WriteLine(res); } stringCol.AddRange(arr); Console.WriteLine("Count of elements = "+stringCol.Count); stringCol.Clear(); Console.WriteLine("\nRemoved all the elements now..."); Console.WriteLine("Total number of elements now = "+stringCol.Count); } }
输出结果
这将产生以下输出-
Array elements... A B C D E F G H I J Count of elements = 10 Removed all the elements now... Total number of elements now = 0