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Get the number of key/value pairs in the StringDictionary in C#
To get the number of key/value pairs in 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 strDict = new StringDictionary(); strDict.Add("1", "One"); strDict.Add("2", "Two"); strDict.Add("3", "Three"); strDict.Add("4", "Four"); Console.WriteLine("StringDictionary key-value pairs..."); IEnumerator demoEnum = strDict.GetEnumerator(); DictionaryEntry d; while (demoEnum.MoveNext()) { d = (DictionaryEntry)demoEnum.Current; Console.WriteLine("Key = " + d.Key + ", Value = " + d.Value); } Console.WriteLine("Count of StringDictionary key-value pairs..."+strDict.Count); } }
Output
This will produce the following output −
StringDictionary key-value pairs... Key = 1, Value = One Key = 2, Value = Two Key = 3, Value = Three Key = 4, Value = Four Count of StringDictionary key-value pairs...4
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", "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 elements..."); foreach(DictionaryEntry de in strDict1){ Console.WriteLine(de.Key + " " + de.Value); } Console.WriteLine("Count of StringDictionary1 key-value pairs..."+strDict1.Count); 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("\nStringDictionary2 key-value pairs..."); IEnumerator demoEnum = strDict2.GetEnumerator(); DictionaryEntry d; while (demoEnum.MoveNext()) { d = (DictionaryEntry)demoEnum.Current; Console.WriteLine("Key = " + d.Key + ", Value = " + d.Value); } Console.WriteLine("Count of StringDictionary2 key-value pairs..."+strDict2.Count); } }
Output
This will produce the following output −
StringDictionary1 elements... a John b Andy c Tim d Ryan e Kevin f Katie g Brad Count of StringDictionary1 key-value pairs...7 StringDictionary2 key-value pairs... Key = 1, Value = A Key = 2, Value = B Key = 3, Value = C Key = 4, Value = D Key = 5, Value = E Count of StringDictionary2 key-value pairs...5
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