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法學研究C# 中透過指定鍵值從 OrderedDictionary 中刪除條目
要透過指定鍵值從 C# 的 OrdererdDictionary 中刪除條目，程式碼如下 −
示例
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
OrderedDictionary dict = new OrderedDictionary();
dict.Add("A", "Books");
dict.Add("B", "Electronics");
dict.Add("C", "Smart Wearables");
dict.Add("D", "Pet Supplies");
dict.Add("E", "Clothing");
dict.Add("F", "Footwear");
Console.WriteLine("OrderedDictionary elements...");
foreach(DictionaryEntry d in dict) {
Console.WriteLine(d.Key + " " + d.Value);
}
Console.WriteLine("Count of elements in OrderedDictionary = " + dict.Count);
dict.Remove("E");
Console.WriteLine("Count of elements in OrderedDictionary (Updated)= " + dict.Count);
}
}輸出
這將產生以下輸出 −
OrderedDictionary elements... A Books B Electronics C Smart Wearables D Pet Supplies E Clothing F Footwear Count of elements in OrderedDictionary = 6 Count of elements in OrderedDictionary (Updated)= 5
示例
讓我們看另一個示例 −
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
OrderedDictionary dict = new OrderedDictionary();
dict.Add("A", "One");
dict.Add("B", "Two");
dict.Add("C", "Three");
dict.Add("D", "Four");
Console.WriteLine("OrderedDictionary elements...");
foreach(DictionaryEntry d in dict) {
Console.WriteLine(d.Key + " " + d.Value);
}
Console.WriteLine("Count of elements in OrderedDictionary = " + dict.Count);
dict.Remove("C");
dict.Remove("D");
Console.WriteLine("Count of elements in OrderedDictionary (Updated)= " + dict.Count);
}
}輸出
這將產生以下輸出 −
OrderedDictionary elements... A One B Two C Three D Four Count of elements in OrderedDictionary = 4 Count of elements in OrderedDictionary (Updated)= 2
更新時間:05-Dec-2019
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