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                            using System.Collections; //for hashtable
                            
                            //Create a Hashtable
                            Hashtable ohash = new Hashtable();
                            
                            //Add data using the Add() method
                            ohash.Add("AN", "ASP.NET");
                            ohash.Add("VN", "VB.NET");
                            ohash.Add("CN", "C#.NET");
                            
                            //value are stored in key and value pair in hashtable
                            //to fetch the value we use key name, for example
                            string strCategoryName = ohash["AN"].ToString();
                            
                            //to delete any record, we will also use key name, for example
                            ohash.Remove("AN");
                            
                            //now to fetch all the values from hashtable
                            IDictionaryEnumerator oIDic = ohash.GetEnumerator();
                            while (oIDic.MoveNext())
                            {
                                Response.Write(oIDic.Value.ToString());
                            }