Hi Jason,
Welcome to MSDN forum.
You could have a look at here:
https://www.aspsnippets.com/Articles/Call-JavaScript-function-from-Code-Behind-without-using-ScriptManager-in-ASPNet-using-C-and-VBNet.aspx
If you still have problems about it, i recommend you open a new thread in
microsoft asp.net forum to talk about the problem. This forum is to talk about visual studio IDE, if you have problems about vs, please feel free to let me know.
Best regards,
Joyce
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