Analysis of Basic Usage Examples of Dictionary in ASP. NET

This paper illustrates the basic usage of Dictionary in ASP. NET. Share it for your reference, as follows:

//Dictionary Located at System.Collections.Generic Namespace 
/*
 *  Use Dictionary You must reference before System.Collections.Generic Namespace; 
 *  Use Dictionary You must declare the data type of its key and value (which can be of any type); 
 */
// Declare instantiation Dictionary For dic
System.Collections.Generic.Dictionary<int, string> dic = new System.Collections.Generic.Dictionary<int, string>();
// For dic Add keys and values 
dic.Add(100, "quber100");
dic.Add(200, "quber200");
// Check if it exists 300 This key 
if (!dic.ContainsKey(300))
{
  // New additions 300 (Key) and the corresponding quber300 (Value) 
  dic.Add(300, "quber300");
}
// Remove dic Key is 300 Items of 
dic.Remove(300);
// Get dic Total number of key-value pairs 
int dicCount = dic.Count;
Response.Write(" Loop acquisition dic Keys and values in: <br/>");
// Loop acquisition dic Keys and values in 
foreach (KeyValuePair<int, string> keyDic in dic)
{
  Response.Write("key:" + keyDic.Key + ",value:" + keyDic.Value + "<br/>");
}
Response.Write("<hr/><br/>");
Response.Write(" Loop acquisition dic Key in: <br/>");
// Loop acquisition dic Key in 
Dictionary<int, string>.KeyCollection keyDics = dic.Keys;
foreach (int iKey in keyDics)
{
  Response.Write("key:" + iKey + "<br/>");
}
Response.Write("<hr/><br/>");
Response.Write(" Another 1 Loop to get in a variety of ways dic Key in: <br/>");
// Loop acquisition dic Key in 
foreach (int iKey in dic.Keys)
{
  Response.Write("key:" + iKey + "<br/>");
}
Response.Write("<hr/><br/>");
Response.Write(" Loop acquisition dic Values in: <br/>");
// Loop acquisition dic Value in 
Dictionary<int, string>.ValueCollection valueDics = dic.Values;
foreach (string strValue in valueDics)
{
  Response.Write("value:" + strValue + "<br/>");
}
Response.Write("<hr/><br/>");
Response.Write(" Another 1 Loop to get in a variety of ways dic Values in: <br/>");
// Loop acquisition dic Value in 
foreach (string strValue in dic.Values)
{
  Response.Write("value:" + strValue + "<br/>");
}
Response.Write("<hr/><br/>");
Response.Write(" Get dic Individual keys and values in: <br/>");
Response.Write("key:100,value:" + dic[100] + "<br/>");
Response.Write("<hr/><br/>");
Response.Write(" Check dic Whether a key exists in the ( 100 ) and returns its value dicStr : <br/>");
// Check dic Whether a key exists in the ( 100 ) and returns its value 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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I hope this paper is helpful to everyone's asp. net programming.