How to Make a Hash Table in Powershell?

To intialize a blank Hash table use this syntax

$blankHash=@{}

some times we need to have a predefined hash value Initialized with key value pair. I those cases use this syntax.

$intializedHash=@{Key1=value1;key2=value2}

Please note that you need to put a semicolon as the separator between different values.

Add a key value pair to the hash table.