1.创建泛型哈希表，然后加入元素
Dictionary<string,string> openWith=new Dictionary<string, string>();
openWith.Add("txt","notepad.exe");
openWith.Add("bmp","paint.exe");
openWith.Add("dib","paint.exe");
openWith.Add("rtf","wordpad.exe");
2.遍历key
foreach (string key in openWith.Keys)
{
Console.WriteLine("Key = {0}", key);
}
3.遍历value
foreach (string value in openWith.Values)
{
Console.WriteLine("value = {0}", value);
}
4.遍历value, Second Method
Dictionary<string, string>.ValueCollection valueColl = openWith.Values;
foreach (string s in valueColl)
{
Console.WriteLine("Second Method, Value = {0}", s);
}
5.遍历字典
foreach (KeyValuePair<string, string> kvp in openWith)
{
Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value);
}
6.添加存在的元素
try
{
openWith.Add("txt", "winword.exe");
}
catch (ArgumentException)
{
Console.WriteLine("An element with Key = \"txt\" already exists.");
}
7.删除元素
openWith.Remove("doc");
if (!openWith.ContainsKey("doc"))
{
Console.WriteLine("Key \"doc\" is not found.");
}
8.判断键存在
if (openWith.ContainsKey("bmp")) // True
{
Console.WriteLine("An element with Key = \"bmp\" exists.");
}
9.参数为其它类型
Dictionary<int, string[]> OtherType = new Dictionary<int, string[]>();
OtherType.Add(1, "1,11,111".Split(','));
OtherType.Add(2, "2,22,222".Split(','));
Console.WriteLine(OtherType[1][2]);
