C# C# |检查列表字典是否有固定大小

C# |检查列表字典是否有固定大小

原文:https://www . geesforgeks . org/c-sharp-check-if-list dictionary-has-a-fixed-size/

列表词典。IsFixedSize 属性用于获取一个值，该值指示列表字典是否有固定的大小。

语法:

public bool IsFixedSize { get; }

返回值:该属性始终返回 false 。

例:

// C# code to check if ListDictionary
// has a fixed size
using System;
using System.Collections;
using System.Collections.Specialized;

class GFG {

    // Driver code
    public static void Main()
    {

        // Creating a ListDictionary named myDict
        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");

        // Checking if ListDictionary has a fixed size
        Console.WriteLine(myDict.IsFixedSize);
    }
}

输出:

False

注意:

Fixed-size collections do not allow elements to be added or removed after the collection is created, but allow existing elements to be modified.
A fixed-size collection is just a collection with wrappers that prevent elements from being added and removed. Therefore, if changes are made to the underlying collection, including adding or removing elements, the fixed-size collection will reflect these changes.
Retrieving the value of this attribute is an O(1) operation.

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