title: ASP.NET + C#. Creating word document from template
body: <p>I have a word document which contains only one page filled with text and graphic. The page also contains some placeholders like [Field1],[Field2],..., etc. 
  I get data from database and I want to open this document and fill placeholders with some data. For each data row I want to open this document, fill placeholders with row's data and then concatenate all created documents into one document. 
  What is the best and simpliest way to do this? </p>