6 Ways To Check Which Versions Of Net Framework Are Installed In other words, if you install a later version, such as the framework 4.6, you do not first have to install the previous versions, such as the framework 4.5, 4.5.1, or 4.5.2.". Explore how to efficiently target older versions of the framework and whether you need the corresponding versions installed. this video is based on th.

Installed Net Framework Versions Developer At Heart In other words, apps and components built with previous versions will work without modification on the framework 4.5 and later versions. The latest release is entirely standalone and does not require previous versions. it is mostly backwards compatible so it is possible to get your old applications to work on it. whether you need any of them or not depends on what you're running. most applications out there are still built for 2 to 3.5 so installing 3.5 will cover you for that. There's not much educational reason but there are plenty of reasons why you'd have to work with old framework versions. for example support of legacy software system that is not feasible to rewrite due to time and money constraints. When running on a newer version than what was targeted, framework uses quirked behavior to mimic the older targeted version. the app runs on the newer version but acts as if it's running on the older version.

Installed Net Framework Versions Developer At Heart There's not much educational reason but there are plenty of reasons why you'd have to work with old framework versions. for example support of legacy software system that is not feasible to rewrite due to time and money constraints. When running on a newer version than what was targeted, framework uses quirked behavior to mimic the older targeted version. the app runs on the newer version but acts as if it's running on the older version. Yes, almost all apps target a minor version and automatically roll forward to run on the latest installed patch, so there's no reason to keep old patches installed since they won't be used. only apps with rollforward=disable (not recommended) would break. . Specify the framework version that you want your project to target so the application can only use functionality that's available in the specified version. I get asked frequently about whether a lower version of core will run on a machine that only has a more recent version of the core runtime installed. the short answer is 'no it won't run' but there are a few nuances to this simple answer. Just choose an available framework from the dropdown, for example 5.0 and in the solution explorer right click and unload the project. edit the project file (.csproj) and manually change the framework number and save.