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ASP.Net body onload event with master pages

Posted on 2008-06-17
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Last Modified: 2011-09-20
Hi

Am using asp.net 3.5 with master pages.

I need to run some javascript to preload some images in the body onload event but I don't need to run this on every page.

The only body tag is in the master page (mp.master) for the site so currently the event runs for all content pages that whose masterpagefile is mp.master.

How can I run js code in the onload event of some pages only.

Can anyone help?

Wing
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Question by:WingYip
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Expert Comment

by:Elvio Lujan
ID: 21812475
you can set runat="server" in the body tag into the maseter page... an set the onload event by each page...

<body runat="server" id="bodyMaster">

and for each page where you want to set the body onload event...

Master.FindControl("bodyMaster").Attributes.Add("onload", "someJavavScript");
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by:WingYip
ID: 21830930
Have just picked this up again.
I am trying this but no joy as yet.  For a start, attributes is not a member of the control class so it doesn't compile.  The following compiles but doesnt find the body element.  

Dim cBody As HtmlGenericControl = Me.Page.Master.FindControl("bodyRpMaster")
        cBody.Attributes.Add("onload", "some_jscript")

have set the body in the master to "runat=server" and id to "bodyRpMaster"

I have put all this in the page load event.

Am wondering what to do next
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Accepted Solution

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WingYip earned 0 total points
ID: 21946865
This is the way to do it -

        Dim _body As New HtmlControls.HtmlGenericControl
        _body.TagName = "body"
        _body.Attributes.Add("onload", "Javascript code here;")
        Me.Page.Master.Controls.Add(_body)

Wing
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