I would like a c# class file and a simple example application to:
* C# class (separate class file which can be called from various forms in application) with simple example application to demonstrate usage
* Encrypt [login to view URL] and [login to view URL] files
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* Class to read settings from [login to view URL] file into public variables (at application start up) to be used throughout system
* Class to write settings to xml files from textboxes on form
* Class to update existing variables in memory with new xml settings
* Class to read provider names in [login to view URL] (ie, voipfone; interfax) and populate a combo box
* On click of button on form, read settings from appropriate section in [login to view URL] (ie, interfax) when textbox equals (ie, "interfax") and store settings from xml into public variables
* Class to add an attribute (ie, "newsetting") to [login to view URL] to existing element
* Class to read <usersetting1> and <usersetting2> to variables on button click on form
see attached for xml files.