static void Main(string[] args)
{
Hashtable hash = new Hashtable();
键值对集合的“键”一定不能重复。（唯一）
hash.Add(1, "飞机");
hash.Add("xyz",new Person() { Name="猪仔"});
判断一个集合中是否存在某个键
if (hash.ContainsKey("xyz"))
{
Console.WriteLine("存在");
}
判断键值对中是否存在某个值
if (hash.ContainsValue("飞机"))
{
Console.WriteLine("存在2");
}
根据键获取值
Console.WriteLine(hash[1].ToString());
Person pp =hash["xyz"] as Person;
Console.WriteLine(pp.Name);
遍历Hashtable
1.遍历键
foreach (object item in hash.Keys)
{
Console.WriteLine("键{0}，值{1}",item,hash[item]);
}
2.遍历值
foreach (object item in hash.Values)
{
Console.WriteLine("值：{0}",item);
}
3.遍历键值对
foreach (DictionaryEntry kv in hash)
{
Console.WriteLine("键：{0} 值：{1}",kv.Key,kv.Value);
}
Console.ReadKey();
}
Processed:
0.016, SQL:
9
