Controls with a client side onLoad function or seting a cursor server side - ASP.NET Building Controls

[Geoff Davis]

Is there any way to create a web control that calls a client side
onLoad function?

Its diffucilt since you are not able to access the form or body tags
in the control.

I inherit from:
System.Web.UI.WebControls.WebControl

What I'm really trying to do is set a cursor, i haven't been able to
set it server side only in JavaScript.

Any help would be great.

[Geoff Davis]

I worked it out.

By overiding Render, calling base.Render(output) and then adding to
the HTML output stream i can run a script after the control had been
rendered. Previously i could only run a script before it was rendered
and that meant the control didn't exist yet.

//In custom control (which is a composite control)
protected override void Render(HtmlTextWriter output)
{
//add HTML components to the output stream
base.Render(output);

StringWriter s = new StringWriter();s.WriteLine("
<script language='JavaScript'>
doent.getElementById('MyControl').style.cursor = 'newCursor.cur';
</script>");
output.WriteLine(s.ToString());
}

[email]geoffrey.daviscsiro.au[/email] (Geoff Davis) wrote in message news:<6dfb2422.0401122159.41c4816fposting.google. com>...

> Is there any way to create a web control that calls a client side
> onLoad function?
>
> Its diffucilt since you are not able to access the form or body tags
> in the control.
>
> I inherit from:
> System.Web.UI.WebControls.WebControl
>
> What I'm really trying to do is set a cursor, i haven't been able to
> set it server side only in JavaScript.
>
> Any help would be great.

[Jiho Han]

Although that approach is valid, the recommended approach is to use
Page.RegisterStartUpScript method.
Look it up in the SDK doc.

"Geoff Davis" <geoffrey.daviscsiro.au> wrote in message
news:6dfb2422.0401131549.7b421e00posting.google.c om...

> I worked it out.
>
> By overiding Render, calling base.Render(output) and then adding to
> the HTML output stream i can run a script after the control had been
> rendered. Previously i could only run a script before it was rendered
> and that meant the control didn't exist yet.
>
> //In custom control (which is a composite control)
> protected override void Render(HtmlTextWriter output)
> {
> //add HTML components to the output stream
> base.Render(output);
>
> StringWriter s = new StringWriter();s.WriteLine("
> <script language='JavaScript'>
> doent.getElementById('MyControl').style.cursor = 'newCursor.cur';
> </script>");
> output.WriteLine(s.ToString());
> }
>
> [email]geoffrey.daviscsiro.au[/email] (Geoff Davis) wrote in message

news:<6dfb2422.0401122159.41c4816fposting.google. com>...

> > Is there any way to create a web control that calls a client side
> > onLoad function?
> >
> > Its diffucilt since you are not able to access the form or body tags
> > in the control.
> >
> > I inherit from:
> > System.Web.UI.WebControls.WebControl
> >
> > What I'm really trying to do is set a cursor, i haven't been able to
> > set it server side only in JavaScript.
> >
> > Any help would be great.

[Geoff Davis]

Thanks, I gave it a go,

I wasn't sure if you could register more than one start up script.

I didn't want to make it so I remove the ability for someone using my
control to be able to register a start up script.

but you can register many if you want to.

thanks.



"Jiho Han" <jiho.haninfinityinfo.com> wrote in message news:<eIrPm6q2DHA.2184TK2MSFTNGP12.phx.gbl>...

> Although that approach is valid, the recommended approach is to use
> Page.RegisterStartUpScript method.
> Look it up in the SDK doc.