You can use this interface to leverage previewers already installed on a system to display a document preview in a Windows Forms app.
Sample Code:
Please add some!
This interface describes the API implemented by preview handlers. When a handler for a given file type is installed on a system, the shell or custom apps can use it to display the contents of these files in their window. Preview handlers usually do not allow in-place editing and may not display all the information contained in the file (for example, macros inside Office documents are ignored by their preview handlers)