When do we need to call Dispose() in dot net c#?

Question

Do I need to dispose a sqldatareader after it is created?

SqlDataReader reader;
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reader.Close();
reader.Dispose();

Answer 1

Object which are Disposable can be best used (if possible) in a using block. At the end of the using block, the object is automatically disposed.

Because of memory management it is always advised do dispose your objects if you don't need them anymore.

Here's some stuff to read from the MSDN.