How to automatically install .NET framework if it doesn't exist on machine

[vlsw]

I am creating an msi to be deployed. Is there a way to have a launch condition that checks to see if the .NET framework exists on a machine and if not automatically install it without going to the website to do so?

[PRR]

You can detect whether the framework is installed and if not then install it( prerequisites)

.NET Framework Deployment Guide for Developers