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法律研究檢查雜湊表中是否包含特定的鍵，程式碼如下 -
檢查雜湊表中是否包含特定鍵，程式碼如下 -
示例
using System;
using System.Collections;
public class Demo {
public static void Main()
public static void Main(){
Hashtable hash = new Hashtable();
hash.Add("One", "Katie");
hash.Add("Two", "John");
hash.Add("Three", "Barry");
hash.Add("Four", "Mark");
hash.Add("Five","Harry");
hash.Add("Six", "Nathan");
hash.Add("Seven", "Tom");
hash.Add("Eight","Andy");
hash.Add("Nine", "Illeana");
hash.Add("Ten", "Tim");
Console.WriteLine("Hashtable Key and Value pairs...");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Is Hashtable having fixed size? = "+hash.IsFixedSize);
Console.WriteLine("If Hashtable read-only? = "+hash.IsReadOnly);
Console.WriteLine("The Hashtable consists of the key? = "+hash.ContainsKey("Seven"));
}
}輸出
這將產生如下輸出 -
Hashtable Key and Value pairs... One and Katie Ten and Tim Five and Harry Three and Barry Seven and Tom Two and John Four and Mark Eight and Andy Nine and Illeana Six and Nathan Is Hashtable having fixed size? = False If Hashtable read-only? = False The Hashtable consists of the key? = True
示例
讓我們看另一個示例 -
using System;
using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable();
hash.Add("1", "A");
hash.Add("2", "B");
hash.Add("3", "C");
hash.Add("4", "D");
hash.Add("5","E");
hash.Add("6", "F");
hash.Add("7", "G");
hash.Add("8","H");
hash.Add("9", "I");
hash.Add("10", "J");
Console.WriteLine("Hashtable Key and Value pairs...");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Is Hashtable having fixed size? = "+hash.IsFixedSize);
Console.WriteLine("If Hashtable read-only? = "+hash.IsReadOnly);
Console.WriteLine("The Hashtable consists of the key? = "+hash.ContainsKey("5"));
}
}輸出
這將產生如下輸出 -
Hashtable Key and Value pairs... 10 and J 1 and A 2 and B 3 and C 4 and D 5 and E 6 and F 7 and G 8 and H 9 and I Is Hashtable having fixed size? = False If Hashtable read-only? = False The Hashtable consists of the key? = True
更新於: 04-Dec-2019
236 次瀏覽
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