How do I test if the browser supports ClickOnce

[robertb_NZ]

MANASYS Jazz (http://www.jazzsoftware.co.nz) is deployed by ClickOnce: the user clicks the Run Jazz link and a dialog starts that downloads and installs the software. This works perfectly if the user's browser is Internet Explorer or Edge, and (as far as I can tell) Firefox, but does not work with Chrome unless the user has installed the Chrome ClickOnce helper.

I can find out which browser is handling the request from Request.browser.Browser, but how can I tell if it supports ClickOnce?

Thank you, Robert Barnes.

 

[jmcilhinney]

You probably can't. If so then you might just display a message to users of browsers that you know might fail, indicating what to do in that eventuality.

 

[robertb_NZ]

Thanks John. I was going to do what you suggest until (hopefully) somebody gave me an answer, but when I tested my code with W10/Edge I found that Request.Browser.Browser returned value "Chrome"!!! I wouldn't be able to distinguish Edge, which works, from Chrome, which doesn't, so I now produce an unconditional message:
"If you intend to download and install Jazz you may need to use a Microsoft Browser, or install ClickOnce support. You do not need to make this your default browser.
Click Setup for more information"

Regards, Robert.

 

[JohnH]

Tried this javascript? Detect ClickOnce support · GitHub
I know .NET CLR version has been removed, but perhaps the Mime support does it?