Remove First Occurrence from StringCollection in C#

To remove the first occurrence from the StringCollection, the code is as follows −

Example

 Live Demo

using System;
using System.Collections.Specialized;
public class Demo {
   public static void Main() {
      StringCollection stringCol = new StringCollection();
      String[] arr = new String[] { "100", "200", "100", "400", "500" };
      Console.WriteLine("Array elements...");
      foreach (string res in arr) {
         Console.WriteLine(res);
      }
      stringCol.AddRange(arr);
      Console.WriteLine("Total number of elements = "+stringCol.Count);
      stringCol.Remove("100");
      Console.WriteLine("Total number of elements now = "+stringCol.Count);
   }
}

Output

This will produce the following output −

Array elements...
100
200
100
400
500
Total number of elements = 5
Total number of elements now = 4

Example

Let us see another example −

 Live Demo

using System;
using System.Collections.Specialized;
public class Demo {
   public static void Main() {
      StringCollection stringCol = new StringCollection();  
      String[] arr = new String[] { "10", "20", "30", "40", "50", "60", "70", "80" };
      Console.WriteLine("Array elements...");
      foreach (string res in arr) {
         Console.WriteLine(res);
      }
      stringCol.AddRange(arr);
      Console.WriteLine("Total number of elements = "+stringCol.Count);
      stringCol.Remove("50");
      stringCol.Remove("60");
      stringCol.Remove("70");
      Console.WriteLine("Total number of elements now = "+stringCol.Count);
   }
}

Output

This will produce the following output −

Array elements...
10
20
30
40
50
60
70
80
Total number of elements = 8
Total number of elements now = 5