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Remove entry with specified key from the StringDictionary in C#
To remove entry with specified key from the StringDictionary, the code is as follows −
Example
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
StringDictionary strDict1 = new StringDictionary();
strDict1.Add("A", "John");
strDict1.Add("B", "Andy");
strDict1.Add("C", "Tim");
strDict1.Add("D", "Ryan");
strDict1.Add("E", "Kevin");
strDict1.Add("F", "Katie");
strDict1.Add("G", "Brad");
Console.WriteLine("StringDictionary1 key-value pairs...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
strDict1.Remove("D");
Console.WriteLine("
StringDictionary1 key-value pairs after removing a key...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
StringDictionary strDict2 = new StringDictionary();
strDict2.Add("1", "A");
strDict2.Add("2", "B");
strDict2.Add("3", "C");
strDict2.Add("4", "D");
strDict2.Add("5", "E");
Console.WriteLine("
StringDictionary2 key-value pairs...");
IEnumerator demoEnum = strDict2.GetEnumerator();
DictionaryEntry d;
while (demoEnum.MoveNext()) {
d = (DictionaryEntry)demoEnum.Current;
Console.WriteLine("Key = " + d.Key + ", Value = " + d.Value);
}
}
}Output
This will produce the following output −
StringDictionary1 key-value pairs... a John b Andy c Tim d Ryan e Kevin f Katie g Brad StringDictionary1 key-value pairs after removing a key... a John b Andy c Tim e Kevin f Katie g Brad StringDictionary2 key-value pairs... Key = 1, Value = A Key = 2, Value = B Key = 3, Value = C Key = 4, Value = D Key = 5, Value = E
Example
Let us see another example −
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
StringDictionary strDict1 = new StringDictionary();
strDict1.Add("A", "One");
strDict1.Add("B", "Two");
strDict1.Add("C", "Three");
strDict1.Add("D", "Four");
strDict1.Add("E", "Five");
Console.WriteLine("StringDictionary1 key-value pairs...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
strDict1.Remove("B");
strDict1.Remove("C");
Console.WriteLine("
StringDictionary1 key-value pairs after removing a key...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
}
}Output
This will produce the following output −
StringDictionary1 key-value pairs... a One b Two c Three d Four e Five StringDictionary1 key-value pairs after removing a key... a One d Four e Five
Updated on: 05-Dec-2019
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