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List<> can be used as a collection of objects which
can be accessed by index.List originated from
System.Collections.Generic class.List objects can
be sorted,searched,manipulated.so List is very
useful in programming for holding any type of
objects.following shows a example of List<> -
first create a variable of List<> type
List<String> Res = new List<String>();
following way string objects are added to the List -
SqlConnection Conn = new SqlConnection(ConnectionString);
SqlCommand Cmd = new SqlCommand("SELECT CName FROM Categories", Conn);
Conn.Open();
SqlDataReader Categories = Cmd.ExecuteReader();
while (Categories.Read())
Res.Add(Categories.GetString(0));
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