Question

如何在c＃？

中创建，存储和检索哈希表中的值

Answer 1

// Initializes a new hashtable    
Hashtable hTable = new Hashtable();

// Adds an item to the hashtable
hTable.Add("Name",  "Jon");

// Loop through all the values in the hashtable
IDictionaryEnumerator enumHtable = hTable.GetEnumerator();
while (enumHtable.MoveNext())
{
    string str = enumHtable.Value.ToString();
}

Answer 2

看看

Hashtable hashtable = new Hashtable();
hashtable[1] = "One";
hashtable[2] = "Two";
hashtable[13] = "Thirteen";

foreach (DictionaryEntry entry in hashtable)
{
    Console.WriteLine("{0}, {1}", entry.Key, entry.Value);
}

Answer 3

Hashtable h = new Hashtable();
Object k = new Object(); // can be any type of object
Object v = new Object(); // can be any type of object
h[k] = v;

如果您使用的是.Net 2.0或更高版本，使用Dictionary<K, V>可以更加有用，您可以在其中键入键和值。否则，您需要在获取值时强制转换值：

Hashtable h = new Hashtable();
Object k = new Object(); // can be any type of object
String v = "My value";
h[k] = v;
String value = (String)h[k];

如何在c＃中创建，存储和检索哈希表中的值？

3 个答案: