Question About .NET Controls and Javascript

[Jonathan Wood]

I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type it
in but that wouldn't that be specifying my server-side handler rather than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

[Dina]

On Jan 10, 9:28 am, "Jonathan Wood" <[e-mail]:

I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type it
in but that wouldn't that be specifying my server-side handler rather than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programminghttp://www.softcircuits.com

You 'll have to add a Attributes.Add("onclick", "javascript:function")
on the server side to associate a client event handler to a server
control. {Just check on the syntax coz I've not worked on Web apps 4
sometime.}

Hope it helps.
Regards, Dina

[Moe Sisko]

Jonathan,

"Jonathan Wood" <jw***@softcircuits.comwrote in message
news:O7**************@TK2MSFTNGP05.phx.gbl...

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Yes. This should get you going - "Using JavaScript Along with ASP.NET 2.0"
http://msdn2.microsoft.com/en-us/library/aa479390.aspx

HTH,
Moe

[Eliyahu Goldin]

Any attribute that is not recognized on server side will just be emitted to
the client as it is. So

<asp:Text ... abc="xyz" /will produce

<input type="text" abx="xyz" />

--
Eliyahu Goldin,
Software Developer
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
"Jonathan Wood" <jw***@softcircuits.comwrote in message
news:O7**************@TK2MSFTNGP05.phx.gbl...

I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type

it

in but that wouldn't that be specifying my server-side handler rather than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

[=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=]

For lost focus you would do:

myTextBox.Attributes.Add("onblur", "javascript:myfunction")

-- Peter
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
MetaFinder: http://www.blogmetafinder.com
"Jonathan Wood" wrote:

I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type it
in but that wouldn't that be specifying my server-side handler rather than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

[Jonathan Wood]

Yep. Thanks!

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"Dina" <di*********@gmail.comwrote in message
news:f7**********************************@e32g2000 prn.googlegroups.com...

On Jan 10, 9:28 am, "Jonathan Wood" <[e-mail]:

>I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type
it
in but that wouldn't that be specifying my server-side handler rather
than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programminghttp://www.softcircuits.com

You 'll have to add a Attributes.Add("onclick", "javascript:function")
on the server side to associate a client event handler to a server
control. {Just check on the syntax coz I've not worked on Web apps 4
sometime.}

Hope it helps.
Regards, Dina

[Jonathan Wood]

That article looks like just the thing I needed.

However, there's one area that I didn't see it address: How to reference
controls by name. Because if I have a TextBox with ID="txtLbs" it actually
ends up with a name something like
"ctl00_ctl00_ContentPlaceHolder1_MainContent_Wizar d1_txtLbs". I need to
reference two controls from the javascript. I had to hard code these names
because they could potentially change. Anyone have any ideas?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"Moe Sisko" <nullwrote in message
news:uJ**************@TK2MSFTNGP03.phx.gbl...

Jonathan,

"Jonathan Wood" <jw***@softcircuits.comwrote in message
news:O7**************@TK2MSFTNGP05.phx.gbl...

>I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Yes. This should get you going - "Using JavaScript Along with ASP.NET
2.0"
http://msdn2.microsoft.com/en-us/library/aa479390.aspx

HTH,
Moe

[Jonathan Wood]

My concern was that it might match one of the ASP.NET control's server-side
events/attributes. But perhaps most of those have different names.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"Eliyahu Goldin" <RE**************************@mMvVpPsS.orgwrote in
message news:ew**************@TK2MSFTNGP06.phx.gbl...

Any attribute that is not recognized on server side will just be emitted
to
the client as it is. So

<asp:Text ... abc="xyz" /will produce

<input type="text" abx="xyz" />

--
Eliyahu Goldin,
Software Developer
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
"Jonathan Wood" <jw***@softcircuits.comwrote in message
news:O7**************@TK2MSFTNGP05.phx.gbl...

>I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type

it

>in but that wouldn't that be specifying my server-side handler rather
than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

[Jonathan Wood]

Heh, I looked at a table of javascript events had didn't relate to onblur
being when a control lost focus. That name only makes sense in an odd sort
of way. Cool.

I also found a good article based on another suggestion. But do you have any
ideas how I would reference other controls from javascript, given that the
IDs of ASP.NET controls can change substantially by the time the HTML is
rendered?

Thanks!

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"Peter Bromberg [C# MVP]" <pb*******@yahoo.NoSpamMaam.comwrote in message
news:A8**********************************@microsof t.com...

For lost focus you would do:

myTextBox.Attributes.Add("onblur", "javascript:myfunction")

-- Peter
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
MetaFinder: http://www.blogmetafinder.com
"Jonathan Wood" wrote:

>I have a TextBox on a Web form that I'll be accessing from code. However,
I'd also like execute some Javascript when the control loses focus.

I'm a little confused since the IDE does not seem to present javascript
events when a control has the runat="server" specified. I know I can type
it
in but that wouldn't that be specifying my server-side handler rather
than
client script?

I'm pretty sure I need this to be a server-side control but would like to
connect some client-side script. Is this even possible?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

[Jonathan Wood]

Looks like I got this working. I used the ClientID property to obtain the
final control ID.

Thanks!

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"Jonathan Wood" <jw***@softcircuits.comwrote in message
news:e2**************@TK2MSFTNGP06.phx.gbl...

That article looks like just the thing I needed.

However, there's one area that I didn't see it address: How to reference
controls by name. Because if I have a TextBox with ID="txtLbs" it actually
ends up with a name something like
"ctl00_ctl00_ContentPlaceHolder1_MainContent_Wizar d1_txtLbs". I need to
reference two controls from the javascript. I had to hard code these names
because they could potentially change. Anyone have any ideas?

Thanks.

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"Moe Sisko" <nullwrote in message
news:uJ**************@TK2MSFTNGP03.phx.gbl...

>Jonathan,

"Jonathan Wood" <jw***@softcircuits.comwrote in message
news:O7**************@TK2MSFTNGP05.phx.gbl...

>>I'm pretty sure I need this to be a server-side control but would like
to connect some client-side script. Is this even possible?

Yes. This should get you going - "Using JavaScript Along with ASP.NET
2.0"
http://msdn2.microsoft.com/en-us/library/aa479390.aspx

HTH,
Moe