I don't think with Free Reader you can sign documents and also save in database.

hi

Is there any possiblity to open acrobat reader in iFrame asp.net c#?

I wanted customer must sign on pdf doc, how normaly adobe reader has pen facility.

if not free then what is the othere option and how to use it.

Thanks

Hasan

Refer

Open (View) PDF Files on Browser in ASP.Net using C# and VB.Net

As per Refer

Open (View) PDF Files on Browser in ASP.Net using C# and VB.Net

its only opening Acrobat Reader not Acrobat Pro DC where i can sign on my pdf. 

Is there any option where i can open Acrobat Pro DC to get sign.

Thanks

Hasan

asp.net c# or HTML or JavaScript

No. Adobe Pro cannot be used through Web. May be you should contact Adobe support on same and if they say it can be used you can buy the tool.