Page.ClientScript.RegisterStartupScript doesn't work - why?

Question

i have some code in OnInit hanlder

if (!Page.ClientScript.IsStartupScriptRegistered(GetType(), "MyScript"))
{
    Page.ClientScript.RegisterStartupScript(GetType(), "MyScript", GetStartupScript(), true);
}

here i try to register some java script code. and i want it to work on button click event. but it doesn't execute. it executes only after refreshing page. can anyone explain me why it doesn't execute?

thnx in advance!

Might be related to Page Life Cycle events. You may look at http://msdn.microsoft.com/en-us/library/ms178472(v=vs.80).aspx — Nazmul, Apr 28 '12 at 15:20

score 13 · Answer 1 · edited Jun 04 '21 at 03:42

13

Try this:

ScriptManager.RegisterStartupScript(this, typeof(string), "Error", 
    "alert('hi');", true);

The issue is that on some pages you might have declared a ScriptManager. Only one ScriptManager is allowed per page so you have to use the existing ScriptManager to register any scripts.

Note that the RegisterStartupScript is a static method; do not call it on the instance of your ScriptManager (it will cause a compile error in C# but only a warning in VB.NET).

This link has a bit more info on this issue.

edited Jun 04 '21 at 03:42

somethingRandom

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answered Apr 28 '12 at 12:34

1

This worked perfectly. If you want a short but good explanation, check [this link out.](http://codewala.net/2011/11/24/page-clientscript-registerstartupscript-is-not-working/) – But I'm Not A Wrapper Class Jun 30 '14 at 21:27

score 2 · Answer 2 · edited Oct 15 '13 at 19:17

2

 string msg = "This is variable message";
 Page.ClientScript.RegisterStartupScript(typeof(Page), "well1", "<script>alert('" + msg + "');</script>");

edited Oct 15 '13 at 19:17

Meryovi

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answered Dec 13 '12 at 05:50

Vishal Kulkarni

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score -4 · Answer 3 · answered Nov 27 '12 at 15:56

-4

this worked fine for me :

Response.Write("<script type='text/javascript'>alert('" + AlerteMsg + "');</script>");

answered Nov 27 '12 at 15:56

Joy

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11

Please, for the sake of everything holy. Tell us you were not serious. – Riaan Walters Jan 20 '14 at 10:57

Page.ClientScript.RegisterStartupScript doesn't work - why?

3 Answers3

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