Just to make sure we’re talking about the same thing, a runtime is the software necessary to run something written under a particular development framework or system. For example, a user needs the Java runtime installed in order to run software written in Java. Likewise, you need the .NET runtime installed in order to run software written using one of the .NET languages (C#, VB.NET, etc.).
If that’s what you need, you do not need Visual Studio. If, however, what you need is a development environment (meaning the software necessary for you to create software), then you need Visual Studio. In that case, the Visual Studio installer will ensure that you have everything necessary to write .NET software. You will not need to install anything else manually unless you want to use third-party components.
solved Creating .NET runtime envoriment [closed]