Event handling of dynamic controls

[Steve Caliendo]

Hi,

I'm creating 5 ImageButton controls in the panel control, and I have a
unique ID specified for each one.

When I click on any one of them, the Page_Load executes (Of course), but how
do I know which ImageButton caused the post back ? Does it get handled in
the Page_Load or do I need to create a new event handler ?

Thanks,

Steve

[Kevin Spencer]

If I understand you correctly, you would want to create an Event Handler. I
am just not sure what you meant by a "new" Event Handler.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#w**************@TK2MSFTNGP10.phx.gbl...

Hi,

I'm creating 5 ImageButton controls in the panel control, and I have a
unique ID specified for each one.

When I click on any one of them, the Page_Load executes (Of course), but how do I know which ImageButton caused the post back ? Does it get handled in
the Page_Load or do I need to create a new event handler ?

Thanks,

Steve

[Steve Caliendo]

Ok, I tried adding this event handler and it doesn't fire when I click one
of the image buttons.

Private Sub ImageButton_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)

stop

end sub

Do you know what I'm doing wrong ?

Steve
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

If I understand you correctly, you would want to create an Event Handler. I am just not sure what you meant by a "new" Event Handler.

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#w**************@TK2MSFTNGP10.phx.gbl...

Hi,

I'm creating 5 ImageButton controls in the panel control, and I have a
unique ID specified for each one.

When I click on any one of them, the Page_Load executes (Of course), but

how

do I know which ImageButton caused the post back ? Does it get handled in the Page_Load or do I need to create a new event handler ?

Thanks,

Steve

[ashish]

ok this works for me

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Dim imgbtn As New ImageButton
imgbtn.ID = "myimagebtn"
imgbtn.ForeColor = System.Drawing.Color.Azure
imgbtn.Visible = True
form1.Controls.Add(imgbtn)

AddHandler CType(Page.FindControl("myimagebtn"),
ImageButton).Click, AddressOf ImageButtonClick
End Sub

Private Sub ImageButtonClick(ByVal sender As Object, ByVal e As
ImageClickEventArgs)

End Sub
hth
-ashish

Steve Caliendo wrote:

Ok, I tried adding this event handler and it doesn't fire when I click one
of the image buttons.

Private Sub ImageButton_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)

stop

end sub

Do you know what I'm doing wrong ?

Steve
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

If I understand you correctly, you would want to create an Event Handler.

I

am just not sure what you meant by a "new" Event Handler.

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#w**************@TK2MSFTNGP10.phx.gbl...

Hi,

I'm creating 5 ImageButton controls in the panel control, and I have a
unique ID specified for each one.

When I click on any one of them, the Page_Load executes (Of course), but

how

do I know which ImageButton caused the post back ? Does it get handled
in
the Page_Load or do I need to create a new event handler ?

Thanks,

Steve

[Kevin Spencer]

You have to wire up the Event Handler to the object's event, using An
AddHandler statement. Example:

AddHandler Button1.Click, ImageButton_Click

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#N**************@tk2msftngp13.phx.gbl...

Ok, I tried adding this event handler and it doesn't fire when I click one
of the image buttons.

Private Sub ImageButton_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)

stop

end sub

Do you know what I'm doing wrong ?

Steve
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

If I understand you correctly, you would want to create an Event Handler.

I

am just not sure what you meant by a "new" Event Handler.

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#w**************@TK2MSFTNGP10.phx.gbl...

Hi,

I'm creating 5 ImageButton controls in the panel control, and I have a
unique ID specified for each one.

When I click on any one of them, the Page_Load executes (Of course),

but how

do I know which ImageButton caused the post back ? Does it get

handled in the Page_Load or do I need to create a new event handler ?

Thanks,

Steve

[Juan Romero]

Hey guys,

but what about child controls? I am having the same problem. I created a web
custom control that will basically draw a table with some controls inside.
One of those controls is a command button. I can't get the Onclick event of
this command button to fire. How does it work for child controls?

Thanks!

"Kevin Spencer" <ks******@takempis.com> wrote in message
news:ed**************@TK2MSFTNGP10.phx.gbl...

You have to wire up the Event Handler to the object's event, using An
AddHandler statement. Example:

AddHandler Button1.Click, ImageButton_Click

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#N**************@tk2msftngp13.phx.gbl...

Ok, I tried adding this event handler and it doesn't fire when I click one

of the image buttons.

Private Sub ImageButton_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)

stop

end sub

Do you know what I'm doing wrong ?

Steve
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

If I understand you correctly, you would want to create an Event

Handler.

I

am just not sure what you meant by a "new" Event Handler.

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#w**************@TK2MSFTNGP10.phx.gbl...
> Hi,
>
> I'm creating 5 ImageButton controls in the panel control, and I have a > unique ID specified for each one.
>
> When I click on any one of them, the Page_Load executes (Of course),

but how
> do I know which ImageButton caused the post back ? Does it get

handled

in

> the Page_Load or do I need to create a new event handler ?
>
> Thanks,
>
> Steve
>
>

[Kevin Spencer]

Hi Juan,

Well, you're talking about a somewhat different scenario here, as the
original question was about handling the events fired by dynamically-added
Controls in an ASPX Page. However, there are some similarities (a Page is a
Control, and the child Controls of a Page are just that: Child Controls). In
any case, the basic principle is the same. In the case of a Page with
dynamically-added Child Controls, you have to wire up an event handler in
the Page to handle the event fired by the Child Control. In a custom Server
Control, you must do essentially the same thing. The following .Net SDK
article should be helpful:

http://msdn.microsoft.com/library/en...asp?frame=true

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Juan Romero" <ju*********@bowne.com> wrote in message
news:uD**************@TK2MSFTNGP09.phx.gbl...

Hey guys,

but what about child controls? I am having the same problem. I created a web custom control that will basically draw a table with some controls inside.
One of those controls is a command button. I can't get the Onclick event of this command button to fire. How does it work for child controls?

Thanks!

"Kevin Spencer" <ks******@takempis.com> wrote in message
news:ed**************@TK2MSFTNGP10.phx.gbl...

You have to wire up the Event Handler to the object's event, using An
AddHandler statement. Example:

AddHandler Button1.Click, ImageButton_Click

--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.

"Steve Caliendo" <sc*******@epion.com> wrote in message
news:#N**************@tk2msftngp13.phx.gbl...

Ok, I tried adding this event handler and it doesn't fire when I click one of the image buttons.

Private Sub ImageButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

stop

end sub

Do you know what I'm doing wrong ?

Steve
"Kevin Spencer" <ks******@takempis.com> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...
> If I understand you correctly, you would want to create an Event Handler.

I
> am just not sure what you meant by a "new" Event Handler.
>
> --
> HTH,
> Kevin Spencer
> .Net Developer
> Microsoft MVP
> Big things are made up
> of lots of little things.
>
> "Steve Caliendo" <sc*******@epion.com> wrote in message
> news:#w**************@TK2MSFTNGP10.phx.gbl...
> > Hi,
> >
> > I'm creating 5 ImageButton controls in the panel control, and I

have a > > unique ID specified for each one.
> >
> > When I click on any one of them, the Page_Load executes (Of

course), but

> how
> > do I know which ImageButton caused the post back ? Does it get

handled

in
> > the Page_Load or do I need to create a new event handler ?
> >
> > Thanks,
> >
> > Steve
> >
> >
>
>