Remove Password from Powerpoint Files via Microsoft.Office.Interop.PowerPoint

Presentation class has a password property which you would need to clear

http://msdn.microsoft.com/en-us/library/microsoft.office.interop.powerpoint._presentation.password.aspx

Do you know what the password is??

Yes I do know what the password is and know of the password property that can be updated. However how can I open the presentation with password?  Currently I can use the 'open' function to open the presentation, however I am then prompted via pop-up to provide the password.

Is there a way to open the presentation by supplying all the information required and therefore have no user interaction

appPowerPoint.Presentations.Open(strFilename, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse)

Select allOpen in new window

.

This is for vba but it works here in 2010 when there are Open and modify passwords

http://officeone.mvps.org/openppt/index.html

Is it possible to Add an additional Handler to the PowerPoint event after the presentation is opened and prompted for the password?  Or is there another method where I can 'SendKeys' and provide the required password?