ASP.NET RegisterStartupScript() method... vs Response.Write()

Question

Why can't we write a JavaScript code using Response.Write(".....") to serve the same purpose as RegisterStartupScript()?

Philippe Leybaert · Accepted Answer · 2009-06-03 07:34:26Z

1

RegisterStartupScript() will place the HTML in the correct place in your HTML (usually at the end, before the </body> tag.

answered Jun 3, 2009 at 7:34

Philippe Leybaert

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Ivan Suhinin · Accepted Answer · 2009-06-03 10:37:42Z

0

RegisterStartupScript() will correctly wireup you script when it will be loaded from UpdatePanel. By default, code in UpdatePanel update is not treated as script - this should be done manually or by using RegisterStartupScript().

answered Jun 3, 2009 at 10:37

Ivan Suhinin

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2 Comments

JMSA Over a year ago

But what will happen if I use ICallback... -like interfaces to achieve the same goal as UpdatePanel? What would be the role of RegisterStartupScript() then?

Ivan Suhinin Over a year ago

Looks like it will be same as Response.Write("...") then. I've disassembled this method in Resharper and seems like it does nothing but registers script for UpdatePanel and generates correct <script> tags. If you will not use UpdatePanel you'll not get any actual benefit.

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