Referencing subcontrols within UserControl

[Mark Friedman]

Does anyone know how to reference a subcontrol of a UserControl within
client-side script. For example, if I have a TextBox as one of the elements
of my UserControl with an id of "MyTextBox", how do I reference it within
some jscript function. If I try to just reference it as MyTextBox I get an
error saying that MyTextBox is undefined.

From looking at the generated source, I believe that there are two issues
involved. One is that the subcontrol's ID is getting renamed to something
like Foo1_MyTextBox, where Foo is the name of the UserControl. The second
issue is that the reference seems to need to be qualified by it's parent
form's ID, e.g. Form1.Foo1_MyTextBox. If I reference the TextBox that way
it works, but there are a couple of problems, First, I can't be sure what
the renaming be. I assume that if I have more than one instance of the
UserControl on a form that the prefix will change. The second problem is
that I don't know what the ID if the containing form is going to be so I
can't know how to qualify the TextBox's name.

Thanks in advance.

-Mark

[James J. Foster]

Use the ClientID property to get the name of the control in the resulting
HTML.

--
James J. Foster, DotNetCoders
[url]http://www.dotnetcoders.com[/url]


"Mark Friedman" <bingster@yahoo.com> wrote in message
news:%239p0nijRDHA.2676@TK2MSFTNGP10.phx.gbl...

> Does anyone know how to reference a subcontrol of a UserControl within
> client-side script. For example, if I have a TextBox as one of the

elements

> of my UserControl with an id of "MyTextBox", how do I reference it within
> some jscript function. If I try to just reference it as MyTextBox I get

an

> error saying that MyTextBox is undefined.
>
> From looking at the generated source, I believe that there are two issues
> involved. One is that the subcontrol's ID is getting renamed to something
> like Foo1_MyTextBox, where Foo is the name of the UserControl. The second
> issue is that the reference seems to need to be qualified by it's parent
> form's ID, e.g. Form1.Foo1_MyTextBox. If I reference the TextBox that way
> it works, but there are a couple of problems, First, I can't be sure what
> the renaming be. I assume that if I have more than one instance of the
> UserControl on a form that the prefix will change. The second problem is
> that I don't know what the ID if the containing form is going to be so I
> can't know how to qualify the TextBox's name.
>
> Thanks in advance.
>
> -Mark
>
>

[Mark Friedman]

I take your response to refer to client-side script that would be generated
by my UserControl, but what I'd really like to do is just write the script
code directly in the page. Is there a way to do what I want without
generating the script in the control?

-Mark

"James J. Foster" <james@dotnetcoders.com> wrote in message
news:ucvrgxjRDHA.3796@tk2msftngp13.phx.gbl...

> Use the ClientID property to get the name of the control in the resulting
> HTML.
>
> --
> James J. Foster, DotNetCoders
> [url]http://www.dotnetcoders.com[/url]
>
>
> "Mark Friedman" <bingster@yahoo.com> wrote in message
> news:%239p0nijRDHA.2676@TK2MSFTNGP10.phx.gbl...

> > Does anyone know how to reference a subcontrol of a UserControl within
> > client-side script. For example, if I have a TextBox as one of the

> elements

> > of my UserControl with an id of "MyTextBox", how do I reference it

within

> > some jscript function. If I try to just reference it as MyTextBox I get

> an

> > error saying that MyTextBox is undefined.
> >
> > From looking at the generated source, I believe that there are two

issues

> > involved. One is that the subcontrol's ID is getting renamed to

something

> > like Foo1_MyTextBox, where Foo is the name of the UserControl. The

second

> > issue is that the reference seems to need to be qualified by it's parent
> > form's ID, e.g. Form1.Foo1_MyTextBox. If I reference the TextBox that

way

> > it works, but there are a couple of problems, First, I can't be sure

what

> > the renaming be. I assume that if I have more than one instance of the
> > UserControl on a form that the prefix will change. The second problem

is

> > that I don't know what the ID if the containing form is going to be so I
> > can't know how to qualify the TextBox's name.
> >
> > Thanks in advance.
> >
> > -Mark
> >
> >

>
>

[bruce barker]

<script>
var ctl = document.getElementById('<% =
FindControl("myusercontrol").FindControl("mysubcon trol").ClientId %>');
</script>

"Mark Friedman" <bingster@yahoo.com> wrote in message
news:uyS7$ikRDHA.632@TK2MSFTNGP12.phx.gbl...

> I take your response to refer to client-side script that would be

generated

> by my UserControl, but what I'd really like to do is just write the script
> code directly in the page. Is there a way to do what I want without
> generating the script in the control?
>
> -Mark
>
> "James J. Foster" <james@dotnetcoders.com> wrote in message
> news:ucvrgxjRDHA.3796@tk2msftngp13.phx.gbl...

> > Use the ClientID property to get the name of the control in the

resulting

> > HTML.
> >
> > --
> > James J. Foster, DotNetCoders
> > [url]http://www.dotnetcoders.com[/url]
> >
> >
> > "Mark Friedman" <bingster@yahoo.com> wrote in message
> > news:%239p0nijRDHA.2676@TK2MSFTNGP10.phx.gbl...

> > > Does anyone know how to reference a subcontrol of a UserControl within
> > > client-side script. For example, if I have a TextBox as one of the

> > elements

> > > of my UserControl with an id of "MyTextBox", how do I reference it

> within

> > > some jscript function. If I try to just reference it as MyTextBox I

get

> > an

> > > error saying that MyTextBox is undefined.
> > >
> > > From looking at the generated source, I believe that there are two

> issues

> > > involved. One is that the subcontrol's ID is getting renamed to

> something

> > > like Foo1_MyTextBox, where Foo is the name of the UserControl. The

> second

> > > issue is that the reference seems to need to be qualified by it's

parent

> > > form's ID, e.g. Form1.Foo1_MyTextBox. If I reference the TextBox that

> way

> > > it works, but there are a couple of problems, First, I can't be sure

> what

> > > the renaming be. I assume that if I have more than one instance of the
> > > UserControl on a form that the prefix will change. The second problem

> is

> > > that I don't know what the ID if the containing form is going to be so

I

> > > can't know how to qualify the TextBox's name.
> > >
> > > Thanks in advance.
> > >
> > > -Mark
> > >
> > >

> >
> >

>
>

[Christopher Young]

Thank you very much.

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