Part 22 C# Arrays-4

What are the Arrays, Types of Arrays, 

Single & Multi Dimensional, 

Extracting Values using Join Method & foreach loop, 

Array Class Methods, AsReadOnly, BinarySearch, Clear, ConstrainedCopy, Copy, ConvertAll, CreateInstance, Equals, Exists, Find, FindAll, FindIndex, FindLast, FindLastIndex, ForEach, indexof, LastIndexOf, ReferenceEquals, Resize, Reverse, Sort, TrueForAll, 

Advantage of array, 

Disadvantage of array, 

Alternative of Arrays