//Dictionary位于System.Collections.Generic命名空間之下
/*
* 使用Dictionary之前必須引用System.Collections.Generic命名空間;
* 使用Dictionary時必須聲明其鍵和值的數(shù)據(jù)類型(可以為任意類型);
*/
//聲明實例化Dictionary為dic
System.Collections.Generic.Dictionaryint, string> dic = new System.Collections.Generic.Dictionaryint, string>();
//為dic添加鍵和值
dic.Add(100, "quber100");
dic.Add(200, "quber200");
//檢查是否存在300這個鍵
if (!dic.ContainsKey(300))
{
//新增加300(鍵)和對應的quber300(值)
dic.Add(300, "quber300");
}
//移除dic鍵為300的項
dic.Remove(300);
//獲取dic鍵值對總數(shù)
int dicCount = dic.Count;
Response.Write("循環(huán)獲取dic中的鍵和值:br/>");
//循環(huán)獲取dic中的鍵和值
foreach (KeyValuePairint, string> keyDic in dic)
{
Response.Write("key:" + keyDic.Key + ",value:" + keyDic.Value + "br/>");
}
Response.Write("hr/>br/>");
Response.Write("循環(huán)獲取dic中的鍵:br/>");
//循環(huán)獲取dic中的鍵
Dictionaryint, string>.KeyCollection keyDics = dic.Keys;
foreach (int iKey in keyDics)
{
Response.Write("key:" + iKey + "br/>");
}
Response.Write("hr/>br/>");
Response.Write("另一種方法循環(huán)獲取dic中的鍵:br/>");
//循環(huán)獲取dic中的鍵
foreach (int iKey in dic.Keys)
{
Response.Write("key:" + iKey + "br/>");
}
Response.Write("hr/>br/>");
Response.Write("循環(huán)獲取dic中的值:br/>");
//循環(huán)獲取dic中的值
Dictionaryint, string>.ValueCollection valueDics = dic.Values;
foreach (string strValue in valueDics)
{
Response.Write("value:" + strValue + "br/>");
}
Response.Write("hr/>br/>");
Response.Write("另一種方法循環(huán)獲取dic中的值:br/>");
//循環(huán)獲取dic中的值
foreach (string strValue in dic.Values)
{
Response.Write("value:" + strValue + "br/>");
}
Response.Write("hr/>br/>");
Response.Write("獲取dic中單個鍵和值:br/>");
Response.Write("key:100,value:" + dic[100] + "br/>");
Response.Write("hr/>br/>");
Response.Write("檢查dic中是否存在鍵(100),并返回其值dicStr:br/>");
//檢查dic中是否存在鍵(100),并返回其值dicStr
string dicStr = string.Empty;
if (dic.TryGetValue(100, out dicStr))
{
Response.Write("OK");
}
else
{
Response.Write("NO");
}
Response.Write("hr/>br/>");
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