How to view the execution efficiency of a homemade dictionary

Using system;using system.collections.generic;using system.io;using system.linq;using System.Text;using System.threading.tasks;using System.diagnostics;namespace _editdictionary{class KeyValuePair {public KeyVal             Uepair () {} public KeyValuePair (string key,string value) {this.key = key;        This.value = value;        } private string key;             public string Key {get {return Key;}        set {key = value;}        } private string value;            public string Value {get {return this.value;}        set {this.value = value;}        }} class Mydic {list<keyvaluepair> List = new list<keyvaluepair> (); public void Add (string key, String value) {list.        ADD (New KeyValuePair (Key,value));            } public bool Containkey (string key) {bool Result=false; foreach (KeyvaluEpair kvp in list) {if (kvp.                  Key = = key) {result = true; Value + = kvp.                                      Value;                Break                }} return result; }} class Program {static void Main (string[] args) {Mydi            c dic = new Mydic (); string[] arr = file.readalllines (@ "d:\ English-Chinese dictionary txt format. txt", encoding.default);//The second argument is to prevent garbled characters; The first argument is the TXT document of the dictionary (find a large txt dictionary, Test program to be more effective) foreach (string item in arr) {//split word and explain string[] Strarr = Item.                Split (New char[]{'},stringsplitoptions.removeemptyentries); if (strarr.length = = 2) {if (!dic). Containkey (Strarr[0])) {dic.                    ADD (strarr[0],strarr[1]); }}} Stopwatch sw = new Stopwatch(); Sw.            Start (); Dic.            Containkey ("China"); Sw.            Stop (); Console.WriteLine (SW.            Elapsed);            Console.WriteLine ();        Console.read (); }    }}

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How to view the execution efficiency of a homemade dictionary