.NET interview question :- Who is faster hashtable or dictionary ?

This is again a typical collection .NET interview question. Dictionary is faster than hashtable as dictionary is a generic strong type. Hashtable is slower as it takes object as data type which leads to boxing and unboxing.

Below goes the same code for hashtable and dictionary.

Hashtable hashtable = new Hashtable();
hashtable[1] = 

"One";
hashtable[2] = "Two";
hashtable[13] = "Thirteen";

var dictionary = new Dictionary<string, 

int>();
dictionary.Add(i.ToString("00000"), 

10);
dictionary.Add(i.ToString("00000"), 11);

Regards,