Calling Javascript from a Class Library

Question

I have created a class library DLL to be referenced from any third-party application and it contains only one function that calls a JavaScript to read a local file and returns s

Answer 1

You can get the page instance from within the HttpContext like this:

Page page = (Page)(HttpContext.Current.Handler);
page.ClientScript.RegisterClientScriptBlock(...);

This is C# but should be easy to convert to VB.NET as well.

Edit: here is the VB syntax:

Dim page As Page = HttpContext.Current.Handler
page.ClientScript.RegisterClientScriptBlock(...)

Answer 2

You can add reference of System.Web.Extensions & System.Web.UI class to your class library and get the privilege of Working on ScriptManager. RegisterClientStartUp function which can be called in Update Panel too.