.Net中泛型类型Dictionary用法
获取Dictionary字典数据总数
删除一个键
循环字典数据里的值
查找键是否存在
......
protected void Page_Load(object sender, EventArgs e) { //泛型Dictionary Dictionary<string, string> dit = new Dictionary<string, string>(); dit.Add("13", "yunjson"); dit.Add("22", "yunjson.com"); Response.Write("总数" + dit.Count + "<br/>");//字典数据总数 dit.Remove("13");//删除一个键 if (!dit.ContainsKey("13")) { dit.Add("13", "在线工具"); }//判读如果不包含指定的键则添加 foreach (KeyValuePair<string, string> kvp in dit) { Response.Write(kvp.Key); Response.Write("=====" + kvp.Value); Response.Write("<br/>"); }//循环字典中数据 Dictionary<string, string>.KeyCollection ditkey = dit.Keys; foreach (string k in ditkey) { Response.Write(k + "<br/>"); }//循环字典数据的键 Dictionary<string, string>.ValueCollection ditvalue = dit.Values; foreach (var v in ditvalue) { Response.Write(v + "<br/>"); }//循环字典数据里的值 foreach (var ditk in dit.Keys) { Response.Write(ditk + "<br/>"); }//另一种获取字典键的方法 string f = dit["13"]; Response.Write(f);//根据键 获取值 string s = string.Empty; if (dit.TryGetValue("13", out s)) { Response.Write("<br/>找到"); } else { Response.Write("<br/>未找到"); }//查找键是否存在 //泛型List 类型 List<string> a = new List<string>(); a.Add("aa"); a.Add("bb"); foreach (string b in a) { Response.Write("<br/>" + b + "<br/>"); } //泛型IList IList<string> Il = new List<string>(); Il.Add("11"); Il.Add("22"); foreach (var i in Il) { Response.Write(i + "<br/>"); } }