C# | SortedDictionary.Remove() Method

This method is used to remove the value with the specified key from the SortedDictionary<TKey, TValue>.

Syntax:

public bool Remove (TKey key);

Return Value: This method returns true if the element is successfully found and removed; otherwise it returns false. This method returns false if key is not found in the SortedDictionary.



Exception: This method will give ArgumentNullException if the key is null.

Below are the programs to illustrate the use of the above-discussed method:

Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// C# code to remove the entry with
// the specified key from the
// SortedDictionary
using System;
using System.Collections.Generic;
  
class GFG {
  
    // Driver code
    public static void Main()
    {
  
        // Create a new dictionary of
        // strings, with string keys.
        SortedDictionary<string, string> myDict = 
          new SortedDictionary<string, string>();
  
        // Adding key/value pairs in myDict
        myDict.Add("Australia", "Canberra");
        myDict.Add("Belgium", "Brussels");
        myDict.Add("Netherlands", "Amsterdam");
        myDict.Add("China", "Beijing");
        myDict.Add("Russia", "Moscow");
        myDict.Add("India", "New Delhi");
  
        // To get count of key/value pairs in myDict
        Console.WriteLine("Total key/value pairs"
            + " in myDict are : " + myDict.Count);
  
        // Remove the entry with the specified
        // key from the Dictionary
        myDict.Remove("Russia");
  
        Console.WriteLine("After remove operation");
  
        // To get count of key/value pairs in myDict
        Console.WriteLine("Total key/value pairs"
           + " in myDict are : " + myDict.Count);
    }
}

chevron_right


Output:

Total key/value pairs in myDict are : 6
After remove operation
Total key/value pairs in myDict are : 5

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// C# code to remove the entry with
// the specified key from the
// SortedDictionary
using System;
using System.Collections.Generic;
  
class GFG {
  
    // Driver code
    public static void Main()
    {
  
        // Create a new SortedDictionary
        // of ints, with int keys.
        SortedDictionary<int, int> myDict = 
          new SortedDictionary<int, int>();
  
        // Adding key/value pairs in myDict
        myDict.Add(9, 8);
        myDict.Add(3, 4);
        myDict.Add(4, 7);
        myDict.Add(1, 7);
  
        // To get count of key/value pairs in myDict
        Console.WriteLine("Total key/value pairs "
             + "in myDict are : " + myDict.Count);
  
        // Remove the entry with the specified
        // key from the Dictionary
        myDict.Remove(9);
  
        Console.WriteLine("After remove operation");
  
        // To get count of key/value pairs in myDict
        Console.WriteLine("Total key/value pairs in"
                 + " myDict are : " + myDict.Count);
    }
}

chevron_right


Output:

Total key/value pairs in myDict are : 4
After remove operation
Total key/value pairs in myDict are : 3

Reference:



My Personal Notes arrow_drop_up

Coder Machine Learner Social Activist Vocalist

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.