I need one web application developed in c# (ASP.NET), using only classes from .Net Framework API, without use of API of other commercial companies.
Necessary files are .xlsx and .docx files (MS Office 2007 and 2010)
The user should be able to choose a file with FileChooser.
After choosing of a file:
--- if a document does not contain a digital signature, the program should report about this to the user (Warning).
--- if a document contains a digital signature, the program must read data of digital signature and of Certificate and must inform the folowing data to the users:
1) Who signed the document;
2) Date of signature;
3) Which organization issued a certificate;
4) Validity of a certificate;
5) Status of the digital signature
I want to buy SourceCode of this web application. The SourceCode must be written clearly and distinctly.I want to integrate this web application into my website