在C#中将元素添加到哈希表中
要将元素添加到哈希表中，代码如下-
示例
using System;using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable(10);
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("Count of entries in Hashtable = "+ hash.Count);
hash.Add("11", "K");
Console.WriteLine("Hashtable Key and Value pairs...UPDATED");
foreach(DictionaryEntry entry in hash){
Console.WriteLine("{0} and {1} ", entry.Key, entry.Value);
}
Console.WriteLine("Count of entries in Hashtable (updated) = "+hash.Count);
}
}
输出结果
这将产生以下输出-
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
Count of entries in Hashtable = 10 Hashtable Key and Value pairs...UPDATED 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
11 and K
Count of entries in Hashtable (updated) = 11
示例
现在让我们来看另一个示例-
using System;using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable(10);
hash.Add("1", "SUV");
hash.Add("2", "Electric Cars");
hash.Add("3", "AUV");
hash.Add("4", "Utility Vehicle");
hash.Add("5","Compact Car");
hash.Add("6", "Sedan");
hash.Add("7","Crossover");
Console.WriteLine("Enumerator to iterate through the Hashtable...");
IDictionaryEnumerator demoEnum = hash.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
}
}
输出结果
这将产生以下输出-
Enumerator to iterate through the Hashtable...Key = 1, Value = SUV
Key = 2, Value = Electric Cars
Key = 3, Value = AUV
Key = 4, Value = Utility Vehicle
Key = 5, Value = Compact Car
Key = 6, Value = Sedan
Key = 7, Value = Crossover
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