要在StringCollection中的指定索引处插入,代码如下-
using System; using System.Collections.Specialized; public class Demo { public static void Main(){ StringCollection strCol = new StringCollection(); strCol.Add("Accessories"); strCol.Add("Books"); strCol.Add("Electronics"); Console.WriteLine("StringCollection elements..."); foreach (string res in strCol){ Console.WriteLine(res); } strCol.Insert(2, "Headphone"); Console.WriteLine("StringCollection elements...UPDATED"); foreach (string res in strCol){ Console.WriteLine(res); } } }
输出结果
这将产生以下输出-
StringCollection elements... Accessories Books Electronics StringCollection elements...UPDATED Accessories Books Headphone Electronics
现在让我们来看另一个示例-
using System; using System.Collections.Specialized; public class Demo { public static void Main(){ StringCollection strCol = new StringCollection(); strCol.Add("Laptop"); strCol.Add("Desktop"); strCol.Add("Tablet"); strCol.Add("Speakers"); Console.WriteLine("StringCollection elements..."); foreach (string res in strCol){ Console.WriteLine(res); } strCol.Insert(2, "Headphone"); strCol.Insert(3, "Alienware"); Console.WriteLine("StringCollection elements...UPDATED"); foreach (string res in strCol){ Console.WriteLine(res); } strCol.Insert(4, "E-Book Reader"); strCol.Insert(5, "Monitor"); strCol.Insert(6, "HDD"); strCol.Insert(7, "SSD"); Console.WriteLine("StringCollection elements...UPDATED"); foreach (string res in strCol){ Console.WriteLine(res); } } }
输出结果
这将产生以下输出-
StringCollection elements... Laptop Desktop Tablet Speakers StringCollection elements...UPDATED Laptop Desktop Headphone Alienware Tablet Speakers StringCollection elements...UPDATED Laptop Desktop Headphone Alienware E-Book Reader Monitor HDD SSD Tablet Speakers