Difference between array, arraylist, List, Hashtable, Dictionary and SortedList in c#

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Basic difference is that arrays are of fixed size. Whereas an ArrayList implements the list data structure and can dynamically grow. While arrays would be more performance that a list, a list would be far more flexible since you don't need to know the required size initially. Array - represents an old-school memory array - kind of like a alias for a normal type[] array. Can enumerate. Can't grow automatically. I would assume very fast insertion, retrieve and speed. ArrayList - automatically growing array. Adds more overhead. Can enum., probably slower than a normal array but still pretty fast. These are used a lot in .NET List - one of my favorites - can be used with generics, so you can have a strongly typed array, e.g. List . Other than that, acts very much like ArrayList. Hashtable - plain old hashtable. O(1) to O(n) worst case. Can enumerate the value and keys properties, and do key/val pairs. Dictionary - same as above only strongly typed via generics, such a...
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Benefits and Limitation of using Cookies?

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Following are benefits of using cookies for state management :-


  • No server resources are required as they are stored in client.
  • They are light weight and simple to use
Following are limitation of using cookies :-

  • Most browsers place a 4096-byte limit on the size of a cookie,although support
    for 8192-byte cookies is becoming more common in the new browser and
    client-device versions available today.
  • Some users disable their browser or client device’s ability to receive cookies,
    thereby limiting the use of cookies.
  • Cookies can be tampered and thus creating a security hole.
  • Cookies can expire thus leading to inconsistency.

Below is sample code of implementing cookies :-

Request.Cookies.Add(New HttpCookie(“name”, “user1”))  

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