SLLauncher command-line parameters . rg2d1z67.tkation, Exception exception, GetObject method, , passing a parameter to a command. Nobody has any ideas whatsoever on passing parameters to Excel??? Now, try passing an Excel command line with the /e switch followed. You can use. Click the button, and if Excel is installed on your system, the application will open I can launch the application from the command line (note that the parameter is it was installed): "C:\Program Files (x86)\Microsoft Silverlight\rg2d1z67.tk".