A program to unpack .xll add-in pack with Excel-DNA project : https://exceldna.codeplex.com/
ExcelDnaUnPack is a command-line utility to un-pack ExcelDna add-ins into a single .dll file.
Usage: ExcelDnaUnPack.exe xllPath [/O outputPath] [/Y]
xllPath The path to the .xll file for the ExcelDna add-in. /Y If the output .dll exists, overwrite without prompting. /O outPath Output path - default is -unpacked.dll.
Example: ExcelDnaUnPack.exe MyAddins\FirstAddin.xll The unpacked add-in file will be created as MyAddins\FirstAddin-unpacked.dll.
The Excel-Dna integration assembly (ExcelDna.Integration.dll) is searched for
- in the same directory as the .xll file, and if not found there,
- in the same directory as the ExcelDnaUnPack.exe file.