interim values from custom control

[Jon Paal]

I have a custom server control which renders some html.

I want to capture some interim values generated by the control as it processes the data.

is there a way to capture and retrieve the interim values generated by the control, so they can be used elsewhere in the display
page ?

[Karl Seguin [MVP]]

Raise an event in your user control, have anyone who cares to hook into the
event and retrieve the event argument.

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/
"Jon Paal" <Jon[ nospam ]Paal @ everywhere dot com> wrote in message
news:Oc******** ******@TK2MSFTN GP14.phx.gbl...

I have a custom server control which renders some html.

I want to capture some interim values generated by the control as it
processes the data.

is there a way to capture and retrieve the interim values generated by the
control, so they can be used elsewhere in the display page ?

[Jon Paal]

not sure how to get an event raised for my situation.

the primary use of the custom control is achieved with :

"<cc1:myCustomC ontrol id="CustomContr ol1" runat="server" />"

properties are assigned programatically with a call to "LoadProperties (CustomControl1 )"

Sub LoadProperties( oThis)
othis.Chart_ali gn = "center"
...
End Sub
and this part works.
then my weak attempt to get an interim arraylist back from the custom control

.............. code start ...

'create a new instance of control
'-----------------------------------
Dim oDisplay as myCustomControl = New myCustomControl
call LoadProperties( oDisplay )

'create new arraylist
'--------------------------
Dim myArrayList As New ArrayList()

'populate arraylist
'-----------------------
myArrayList = oDisplay.builda rraylist()

............. end code .....

This fails because it's not accepting the properties, but it does accept them on the first instance above ??

------------- error msg -----------------
Exception Details: System.NullRefe renceException: Object reference not set to an instance of an object.

Source Error:

Line 1415: writer.AddAttri bute("align", Chart_align.ToS tring() )


"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME net> wrote in message
news:ud******** ******@TK2MSFTN GP10.phx.gbl...

Raise an event in your user control, have anyone who cares to hook into the event and retrieve the event argument.

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/
"Jon Paal" <Jon[ nospam ]Paal @ everywhere dot com> wrote in message news:Oc******** ******@TK2MSFTN GP14.phx.gbl...

I have a custom server control which renders some html.

I want to capture some interim values generated by the control as it processes the data.

is there a way to capture and retrieve the interim values generated by the control, so they can be used elsewhere in the display
page ?

[Karl Seguin [MVP]]

you need to define an event in your control, ala:

public event ValueChanged() as CommandEventHan dler

have a function that raises it

private sub RaiseValueChang ed(newValue as string)
dim args as new CommandEventArg s("ValueChanged ", newValue)
RaiseEvent ValueChanged(ar gs)
end sub
you can then hook into the event on the page..

AddHandler othis.ValueChan ged, AddressOf(SomeF unction)
sub SomeFunction(so urce as object, e as CommandEventArg s)
dim newValue as string = e.CommandArgume nt
end sub
not sure if all that vb.net is right...should give you some ideas...

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/
"Jon Paal" <Jon[ nospam ]Paal @ everywhere dot com> wrote in message
news:eb******** ******@TK2MSFTN GP12.phx.gbl...

not sure how to get an event raised for my situation.

the primary use of the custom control is achieved with :

"<cc1:myCustomC ontrol id="CustomContr ol1" runat="server" />"

properties are assigned programatically with a call to
"LoadProperties (CustomControl1 )"

Sub LoadProperties( oThis)
othis.Chart_ali gn = "center"
...
End Sub
and this part works.
then my weak attempt to get an interim arraylist back from the custom
control

............. code start ...

'create a new instance of control
'-----------------------------------
Dim oDisplay as myCustomControl = New myCustomControl
call LoadProperties( oDisplay )

'create new arraylist
'--------------------------
Dim myArrayList As New ArrayList()

'populate arraylist
'-----------------------
myArrayList = oDisplay.builda rraylist()

............ end code .....

This fails because it's not accepting the properties, but it does accept
them on the first instance above ??

------------- error msg -----------------
Exception Details: System.NullRefe renceException: Object reference not set
to an instance of an object.

Source Error:

Line 1415: writer.AddAttri bute("align",
Chart_align.ToS tring() )


"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME
net> wrote in message news:ud******** ******@TK2MSFTN GP10.phx.gbl...

Raise an event in your user control, have anyone who cares to hook into
the event and retrieve the event argument.

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/
"Jon Paal" <Jon[ nospam ]Paal @ everywhere dot com> wrote in message
news:Oc******** ******@TK2MSFTN GP14.phx.gbl...

I have a custom server control which renders some html.

I want to capture some interim values generated by the control as it
processes the data.

is there a way to capture and retrieve the interim values generated by
the control, so they can be used elsewhere in the display page ?

[Jon Paal]

thanks for trying to help me.

I must be very thick, or I must be stating my question all wrong, because this doesn't seem applicable. I can't see any way to
implement this.

I'll try to rethink/restate my problem and do another posting.

"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME net> wrote in message
news:O8******** *****@TK2MSFTNG P12.phx.gbl...

you need to define an event in your control, ala:

public event ValueChanged() as CommandEventHan dler

have a function that raises it

private sub RaiseValueChang ed(newValue as string)
dim args as new CommandEventArg s("ValueChanged ", newValue)
RaiseEvent ValueChanged(ar gs)
end sub
you can then hook into the event on the page..

AddHandler othis.ValueChan ged, AddressOf(SomeF unction)
sub SomeFunction(so urce as object, e as CommandEventArg s)
dim newValue as string = e.CommandArgume nt
end sub
not sure if all that vb.net is right...should give you some ideas...

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/
"Jon Paal" <Jon[ nospam ]Paal @ everywhere dot com> wrote in message news:eb******** ******@TK2MSFTN GP12.phx.gbl...

not sure how to get an event raised for my situation.

the primary use of the custom control is achieved with :

"<cc1:myCustomC ontrol id="CustomContr ol1" runat="server" />"

properties are assigned programatically with a call to "LoadProperties (CustomControl1 )"

Sub LoadProperties( oThis)
othis.Chart_ali gn = "center"
...
End Sub
and this part works.
then my weak attempt to get an interim arraylist back from the custom control

............. code start ...

'create a new instance of control
'-----------------------------------
Dim oDisplay as myCustomControl = New myCustomControl
call LoadProperties( oDisplay )

'create new arraylist
'--------------------------
Dim myArrayList As New ArrayList()

'populate arraylist
'-----------------------
myArrayList = oDisplay.builda rraylist()

............ end code .....

This fails because it's not accepting the properties, but it does accept them on the first instance above ??

------------- error msg -----------------
Exception Details: System.NullRefe renceException: Object reference not set to an instance of an object.

Source Error:

Line 1415: writer.AddAttri bute("align", Chart_align.ToS tring() )


"Karl Seguin [MVP]" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME net> wrote in message
news:ud******** ******@TK2MSFTN GP10.phx.gbl...

Raise an event in your user control, have anyone who cares to hook into the event and retrieve the event argument.

Karl

--
http://www.openmymind.net/
http://www.fuelindustries.com/
"Jon Paal" <Jon[ nospam ]Paal @ everywhere dot com> wrote in message news:Oc******** ******@TK2MSFTN GP14.phx.gbl...
I have a custom server control which renders some html.

I want to capture some interim values generated by the control as it processes the data.

is there a way to capture and retrieve the interim values generated by the control, so they can be used elsewhere in the
display page ?