Is there anyway to check from a website if a client has a specific version of .Net installed and which one it is so you can offer them different downloads based on it?
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Is there anyway to check from a website if a client has a specific version of .Net installed and which one it is so you can offer them different downloads based on it?
You can parse the user agent. There is MSDN page that describes the format, especially, take a look at the
.NET CLR <version>token.However, you can guarantee the information will be present and accurate : non MS browser, customized user agent string, paranoid user agent, etc. can be factors for users to remove such information.
[Edit] Probably not an easy things to do, but you can use a setup bootstrapper which will detect the installed version to download the actual setup. Microsoft use this technique for some of their products web installers.