Dictionary remove foreach
C# Code:
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class Program { static void Main(string[] args) { //initialize a dictionary with keys and values. Dictionary<int, string> birds = new Dictionary<int, string>() { {1,"Eastern Screech Owl"}, {2,"Sokoke Scops Owl"}, {3,"Great Horned Owl"}, {4,"Snowy Owl"}, {5,"Tawny Owl"} }; Console.WriteLine( "dictionary keys and values.........."); foreach (KeyValuePair<int, string> pair in birds) { Console.WriteLine(pair.Key + " ........ " + pair.Value); } //create an int array with dictionary keys. int[] keys = birds.Keys.ToArray(); Console.WriteLine("\nremoving keys from dictionary which key>=4"); foreach (int key in keys) { if (key >= 4) { birds.Remove(key); Console.WriteLine("key [" + key + "] removed from dictionary"); } } Console.WriteLine("\ndictionary keys and values after remove.........."); foreach (KeyValuePair<int, string> pair in birds) { Console.WriteLine(pair.Key + " ........ " + pair.Value); } Console.ReadLine(); } } |
Output:
How to remove items from Dictionary in foreach loop in C#
