How to replace string to anther string which can back to original using c# : I want to replace string to anther string which can back to original using c#
For example If I entered 

> "XcXa$2A"

then clicked on button, Output will be the following string:

> "t6tYQA*"

That's because for my example

    X replaced by t 
    c replaced by 6
    a replaced by Y
    A replaced by *
    $ replaced by Q
    2 replaced by A

And Also the output string can be back to the original string from another button "t6tYQA*" can be back to original "XcXa$2A" 
So I need all characters in keyboard can be replaced to another and output can be back to original
Thanks in advance.
I need that for secure all my string and don't need to use encrypt and decrypt.


 