HybridDictionary.Count属性用于获取HybridDictionary中包含的键/值对的数量。
句法：
public int Count { get; }
返回值： HybridDictionary中包含的键/值对的数量。
注意：检索此属性的值是O(1)操作。
下面的程序说明了HybridDictionary.Count属性的用法：
范例1：
// C# code to get the number of key/value
// pairs contained in the HybridDictionary.
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
// Driver code
public static void Main()
{
// Creating a HybridDictionary named myDict
HybridDictionary myDict = new HybridDictionary();
// 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);
}
}
输出：
Total key/value pairs in myDict are : 6
范例2：
// C# code to get the number of key/value
// pairs contained in the HybridDictionary.
using System;
using System.Collections;
using System.Collections.Specialized;
class GFG {
// Driver code
public static void Main()
{
// Creating a HybridDictionary named myDict
HybridDictionary myDict = new HybridDictionary();
// Adding key/value pairs in myDict
myDict.Add("I", "first");
myDict.Add("II", "second");
myDict.Add("III", "third");
myDict.Add("IV", "fourth");
myDict.Add("V", "fifth");
// To get count of key/value pairs in myDict
Console.WriteLine("Total key/value pairs in myDict are : "
+ myDict.Count);
}
}
输出：
Total key/value pairs in myDict are : 5
参考：
- https://docs.microsoft.com/zh-cn/dotnet/api/system.collections.specialized.hybriddictionary.count?view=netframework-4.7.2