Notepad++ has the option "open containing folder" in explorer and cmd from the Tab. I work a lot with Arduino files in Notepad++ but to compile the file the original Arduino editor is required. It will be a nice feature of have the possibility to open the editor direct from the Notepad++ tab: "Open file in original program" according the extension and the Windows file association.
To achieve this you could use the RunMe plugin. It executes the currently opend file based on its shell association.
A more flexible way would be to use the NppExec plugin. It provides a console to execute commands in Notepad++ and also allows scripting. Its help file shows example scripts how to call compilers of different programming languages.
I personally use the second solution. I wrote a base script which I can call via keyboard shortcut. According to the current file's extension it calls scripts to start the appropriate compiler or interpreter. In this way a have a sort of shell for 12 programming/scripting languages, including VBScript, Batch Script, GNU Plot, C, C#, SQL and InnoSetup.
I did a quick test with the Run... menu and creating an entry like this seems to work:
cmd.exe /c start $(FULL_CURRENT_PATH)
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