Programmatically and periodically upload file to sharepoint document library Using Webservices

Programmatically and periodically upload file to sharepoint document library

List your SharePoint Document Libraries on external sites

List your SharePoint Document Libraries on external sites
SharePoint - Create Document Library Programmatically

Programmatically Adding Documnets in Document Library
Using Elevated Privileges and AllowSafeUpdates Method - A Potential Security Risks

Display SharePoint Users, Groups and Sites in a GridView and Use a DropDownList to filter the values