There are many ways to check what version of. Here are a few common methods. You can check your installed versions of. NET by navigating to Microsoft. Each of the installed. NET versions will have its own folder. You can also check which versions of. NET are installed by looking in your registry in the following locations:. This next picture shows the second location. If the Full subkey isn't present, then you don't have. If it exists, then you have. Its value corresponds to a particular version of.
In the following figure, for example, the value of the Release entry is , which is the release key for. The following examples check the value of the Release entry to determine whether. This code returns True if it's installed and False otherwise. Use the RegistryKey. OpenBaseKey and RegistryKey. If the app you're running is bit and running in bit Windows, the registry paths will be different than previously listed. For example, the registry subkey for. To be forward-compatible, check for a value greater than or equal to the value listed in the.
NET Framework version table. The following example checks the value of the Release entry in the registry to find the versions of. Add the directive using Microsoft. Win32 or Imports Microsoft. Win32 at the top of your code file if you haven't already done so. Each version of. NET Framework from 1. The following table lists the path to each. NET Framework version. NET Framework 3.
Open the subkey that matches the version you want to check. Use the table in the Detect. NET Framework 1. The following figure shows the subkey and its Version value for. Use the Microsoft. NET Framework is versioned separately. There are two ways to detect the version of the. Version property to detect the version of the CLR. Instead, query the registry as described in Detect.
Query the Environment. Version property to retrieve a Version object. The returned System. Version object identifies the version of the runtime that's currently executing the code. It doesn't return assembly versions or other versions of the runtime that may have been installed on the computer.
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