C# | Get the number of key/value pairs contained in ListDictionary
Last Updated :
01 Feb, 2019
ListDictionary.Count property is used to get the number of key/value pairs contained in the ListDictionary.
Syntax:
public int Count { get; }
Return Value : The number of key/value pairs contained in the ListDictionary.
Below are the programs to illustrate the use of ListDictionary.Count property:
Example 1:
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
public static void Main()
{
ListDictionary myDict = new ListDictionary();
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" );
Console.WriteLine(myDict.Count);
}
}
|
Output:
6
Example 2:
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
public static void Main()
{
ListDictionary myDict = new ListDictionary();
myDict.Add( "I" , "first" );
myDict.Add( "II" , "second" );
myDict.Add( "III" , "third" );
myDict.Add( "IV" , "fourth" );
myDict.Add( "V" , "fifth" );
Console.WriteLine(myDict.Count);
}
}
|
Output:
5
Note: Retrieving the value of this property is an O(1) operation.
Reference:
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