How to read & count of total words in such files .indd,.fm,.pmd,.p65,.ppt,.ttf,.dwg,.odt in Asp.net
.indd= File Type Indesign Document Developer Adobe Systems
.fm= File Type FrameMaker Document Developer Adobe Systems
.pmd= File Type PageMaker Document Developer Adobe Systems
.p65= File Type PageMaker 6.5 Document Developer Adobe Systems
.ppt= File Type PowerPoint Presentation Developer Microsoft
.ttf = File Type TrueType Font Developer Apple
.dwg= File Type AutoCAD Drawing Database File Developer Autodesk
.odt= File Type OpenDocument Text Document Developer Oracle
.xls= File Type Excel Spreadsheet Developer Microsoft