检查Hashtable在C#中是否为只读
要检查Hashtable是否为只读，代码如下-
示例
using System;using System.Collections;
public class Demo {
public static void Main(){
Hashtable hash = new Hashtable();
hash.Add("One", "Katie");
hash.Add("Two", "John");
hash.Add("Three", "Barry");
hash.Add("Four", "");
hash.Add("Five","Harry");
hash.Add("Six", "F");
hash.Add("Seven", "Tom");
hash.Add("Eight","Andy");
hash.Add("Nine", "I");
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 the Hashtable having fixed size? = "+hash.IsFixedSize);
Console.WriteLine("If Hashtable read-only? = "+hash.IsReadOnly);
}
}
输出结果
这将产生以下输出-
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
Eight and Andy
Nine and I
Six and F
Is the Hashtable having fixed size? = False
If Hashtable read-only? = False
示例
让我们来看另一个例子-
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);
}
}
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
Is Hashtable having fixed size? = False If Hashtable read-only? = False
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