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Arrays are certainly not unique to C#, in fact just about every other programming and scripting language preceding the introduction of C# provided support for arrays. An array allows a collection of values of the same type to be stored and accessed via a single variable. Each item is accessed in the array variable through the the use of an ''index'' value into the array.
C# arrays, whilst useful, have some limitations. Perhaps the most significant limitation is the fact that once an array has been created it cannot be made larger or smaller to accommodate more or fewer values. For more dynamic and flexible collection storage capabilities, it is worth also reading about [[C Sharp Collection Classes|C# Collection Classes]].
