Disable password dialog when opening a password protected Excel file

Question

I have lots of Excel files protected by some known set of passwords. I would like to unprotect them all programmatically.

My problem is that when I open a file using some wrong password, it shows the password dialog and waits for user input. DisplayAlerts = false; does not work.

How do I avoid the password dialog box in case that my password is wrong? Any suggestions?

My current code:

using Excel = Microsoft.Office.Interop.Excel;

bool TryUnprotectFile(string filePath, string trialPassword)
{
   Excel.Application excelApp = new Excel.Application();
   excelApp.DisplayAlerts = false;

   // when password is wrong, then it waits here for user input:
   Excel.Workbook wb = excelApp.Open(filePath, Password: trialPassword, IgnoreReadOnlyRecommended: true, Notify: false);

   // ... further unprotecting code ...

   // should return true when success, false otherwise
}