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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Explain the components of web form in ASP.NET?

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  • Server controls - The server controls are Hypertext Markup Language (HTML) elements that include a runat=server attribute. These controls provide automatic state management and server-side events and respond to the user events by executing event handler on the server.
  • HTML controls - These controls also respond to the user events but the events processing happen on the client machine.
  • Data controls - Data controls allows us to connect to the database, execute command and retrieve data from database.

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