(This is a series of posts covering how to include a WinForm app inside a SharePoint 2007 application. For further info, please see Posts One, Three, and Four. All of the code can be downloaded in this post, Post Two.)In my last post, I explained why we decided to use a Click Once application to solve our business problem. To quickly review, we needed a way for our business users to upload documents to a SharePoint 2007 document library in mass, set the meta data, set the permissions per document, ......