How to call windows exe file in ASP.NET Application which has been hosted in IIS.?
You can't, becuase they are in two different environments Web vs Windows desktop.
You could have a selfhosting WCF service exe using TCP or Named Pipes used for inter-process communications on the same machine, and the ASP.NET application can be a WCF client communicating with the WCF service with the service doing something
on the behalf of the ASP.NET program.