dynamic control creation

[e-mid]

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control on
the runtime is useless. what should i do?
another issue is, it is not known how many myUserControls on thye from or
textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll
does not work.

thnkz

[Shakir Hussain]

e-mid.

There are different ways to do that, i have one recomendation.

1. To reach individual controls, access through properties.

example -

protected TextBox mMyTextBox;

public TexBox MyTextBox
{
get {return mMyTextBox;}
}

2. Autoscroll will work even in design mode of form. I am not sure why
its not working for ur form

Shak.
"e-mid" <someone@somewhere> wrote in message
news:Oi**************@TK2MSFTNGP09.phx.gbl...

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control on the runtime is useless. what should i do?
another issue is, it is not known how many myUserControls on thye from or
textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll
does not work.

thnkz

[Shakir Hussain]

e-mid.

There are different ways to do that, i have one recomendation.

1. To reach individual controls, access through properties.

example -

protected TextBox mMyTextBox;

public TexBox MyTextBox
{
get {return mMyTextBox;}
}

2. Autoscroll will work even in design mode of form. I am not sure why
its not working for ur form

Shak.
"e-mid" <someone@somewhere> wrote in message
news:Oi**************@TK2MSFTNGP09.phx.gbl...

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control on the runtime is useless. what should i do?
another issue is, it is not known how many myUserControls on thye from or
textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll
does not work.

thnkz

[e-mid]

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:#j**************@tk2msftngp13.phx.gbl...

e-mid.

There are different ways to do that, i have one recomendation.

1. To reach individual controls, access through properties.

example -

protected TextBox mMyTextBox;

public TexBox MyTextBox
{
get {return mMyTextBox;}
i dont think, this way works. controls created dynamically.
another question arised here , is this controls are private by default?
2. Autoscroll will work even in design mode of form. I am not sure why
its not working for ur form
it scrolls horizontally, but vertical autoscroll does not work..

i did not understand why?
Shak.
"e-mid" <someone@somewhere> wrote in message
news:Oi**************@TK2MSFTNGP09.phx.gbl...

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control

on

the runtime is useless. what should i do?
another issue is, it is not known how many myUserControls on thye from or textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll does not work.

thnkz

[e-mid]

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:#j**************@tk2msftngp13.phx.gbl...

e-mid.

There are different ways to do that, i have one recomendation.

1. To reach individual controls, access through properties.

example -

protected TextBox mMyTextBox;

public TexBox MyTextBox
{
get {return mMyTextBox;}
i dont think, this way works. controls created dynamically.
another question arised here , is this controls are private by default?
2. Autoscroll will work even in design mode of form. I am not sure why
its not working for ur form
it scrolls horizontally, but vertical autoscroll does not work..

i did not understand why?
Shak.
"e-mid" <someone@somewhere> wrote in message
news:Oi**************@TK2MSFTNGP09.phx.gbl...

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control

on

the runtime is useless. what should i do?
another issue is, it is not known how many myUserControls on thye from or textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll does not work.

thnkz

[Herfried K. Wagner [MVP]]

* "e-mid" <someone@somewhere> scripsit:

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control on
the runtime is useless. what should i do?
\\\
DirectCast(Me.UserControl1.Controls(12), TextBox).Select(2, 10)
///
another issue is, it is not known how many myUserControls on thye from or
textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll
does not work.

Mhm... It should work...

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[Herfried K. Wagner [MVP]]

* "e-mid" <someone@somewhere> scripsit:

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control on
the runtime is useless. what should i do?
\\\
DirectCast(Me.UserControl1.Controls(12), TextBox).Select(2, 10)
///
another issue is, it is not known how many myUserControls on thye from or
textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll
does not work.

Mhm... It should work...

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[e-mid]

Herfried, can you explain about this?

DirectCast(Me.UserControl1.Controls(12), TextBox).Select(2, 10)

and i hear about directCast first time, can you point some sources about it?

"Herfried K. Wagner [MVP]" <hi***************@gmx.at> wrote in message
news:2k*************@uni-berlin.de...

* "e-mid" <someone@somewhere> scripsit:

i have a user control (say myUserControl) that inherits panel, i create
some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change
name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a control on the runtime is useless. what should i do?

\\\
DirectCast(Me.UserControl1.Controls(12), TextBox).Select(2, 10)
///

another issue is, it is not known how many myUserControls on thye from or textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll does not work.

Mhm... It should work...

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[Shakir Hussain]

emid

1. Vertical scrolling will happen only if your controls overflows
vertically. To test this, place controls which overflows horizontally and
vertically. Form will bring both scroll bars.

2. If the controls are created dynamically, to reach individual control, you
have to access Control Collection of your usercontrol

Shak.
"e-mid" <someone@somewhere> wrote in message
news:eb**************@TK2MSFTNGP09.phx.gbl...

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:#j**************@tk2msftngp13.phx.gbl...

e-mid.

There are different ways to do that, i have one recomendation.

1. To reach individual controls, access through properties.

example -

protected TextBox mMyTextBox;

public TexBox MyTextBox
{
get {return mMyTextBox;}
i dont think, this way works. controls created dynamically.
another question arised here , is this controls are private by default?

2. Autoscroll will work even in design mode of form. I am not sure why

its not working for ur form

it scrolls horizontally, but vertical autoscroll does not work..

i did not understand why?

Shak.
"e-mid" <someone@somewhere> wrote in message
news:Oi**************@TK2MSFTNGP09.phx.gbl...

i have a user control (say myUserControl) that inherits panel, i create some textboxes on myUserControl dynamically, then i create some
myUserControls on the form dynamically with a loop . of course i change name,location etc.. meanwhile.

i have some problems here then.

eg: how could i reach each myUserControl and textBoxes on this
myUserControl.
it could be betterif i reach them directly, i know renaming a

control on

the runtime is useless. what should i do?
another issue is, it is not known how many myUserControls on thye

from or textboxes on a myUserControl will be created. i need autoscroll
functionality. on the panel it works, but on the form it seems, autoscroll does not work.

thnkz

[Herfried K. Wagner [MVP]]

* "e-mid" <someone@somewhere> scripsit:

Herfried, can you explain about this?

DirectCast(Me.UserControl1.Controls(12), TextBox).Select(2, 10)

and i hear about directCast first time, can you point some sources about it?

The 'Controls' collection contains objects of type 'Control'. 'Control'
is the generic type for controls shown on Windows Forms. In order to
access members of an object that is an instance of a class that inherits
from 'Control', you need to cast the object to this class.

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[e-mid]

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:e$**************@TK2MSFTNGP10.phx.gbl...

emid

1. Vertical scrolling will happen only if your controls overflows
vertically. To test this, place controls which overflows horizontally and
vertically. Form will bring both scroll bars.
it overflows vertically too , but vertical scrollbar do not appear
2. If the controls are created dynamically, to reach individual control, you have to access Control Collection of your usercontrol

Shak.

yes that works for myUserControls on the form, but when i want to get
textBoxes on a myUserControl, i get a error : "getEnumator() does not bla
bla....." . i cant traverse through the controls on myUserControl..

another question:
is it possible to reach with the name of the control?

[e-mid]

i was using csharp , therefore i did not t know what directcast is, but i
learned know

The 'Controls' collection contains objects of type 'Control'. 'Control'
is the generic type for controls shown on Windows Forms. In order to
access members of an object that is an instance of a class that inherits
from 'Control', you need to cast the object to this class.
ok i got this. but i cant traverse through controls on my userControl . i
got error about getEnumarator()..

and i ask again:

is it possible to reach a control, if i know only its name?
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[Shakir Hussain]

No. Its not possible to reach control by name. You can write a service
function which will return a control, if you pass a name. In the control
collection, you can check whether a particular control exists calling
"Contains" method. For that you need a control to find out.

Can you paste the complete error messages? I may get a clue whats
happening..

Shak.

"e-mid" <someone@somewhere> wrote in message
news:eC**************@TK2MSFTNGP10.phx.gbl...

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:e$**************@TK2MSFTNGP10.phx.gbl...

emid

1. Vertical scrolling will happen only if your controls overflows
vertically. To test this, place controls which overflows horizontally and vertically. Form will bring both scroll bars.
it overflows vertically too , but vertical scrollbar do not appear

2. If the controls are created dynamically, to reach individual control,

you

have to access Control Collection of your usercontrol

Shak.

yes that works for myUserControls on the form, but when i want to get
textBoxes on a myUserControl, i get a error : "getEnumator() does not

bla bla....." . i cant traverse through the controls on myUserControl..

another question:
is it possible to reach with the name of the control?

[Herfried K. Wagner [MVP]]

* "e-mid" <someone@somewhere> scripsit:

is it possible to reach a control, if i know only its name?

Yes, if you provide the mechanism to do that. For example, you can use
an instance of 'Hashtable' to store the (name, control) pairs and easily
look up a control by its name.

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[e-mid]

thnkz, i will try it..

"Herfried K. Wagner [MVP]" <hi***************@gmx.at> wrote in message
news:2k*************@uni-berlin.de...

* "e-mid" <someone@somewhere> scripsit:

is it possible to reach a control, if i know only its name?

Yes, if you provide the mechanism to do that. For example, you can use
an instance of 'Hashtable' to store the (name, control) pairs and easily
look up a control by its name.

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[e-mid]

Here is the error message:

"foreach statement cannot operate on variables of type 'Form1.myUserControl'
because 'Form1.myUserControl' does not contain a definition for
'GetEnumerator', or it is inaccessible"

thnkz
"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:uI**************@TK2MSFTNGP12.phx.gbl...

No. Its not possible to reach control by name. You can write a service
function which will return a control, if you pass a name. In the control
collection, you can check whether a particular control exists calling
"Contains" method. For that you need a control to find out.

Can you paste the complete error messages? I may get a clue whats
happening..

Shak.

"e-mid" <someone@somewhere> wrote in message
news:eC**************@TK2MSFTNGP10.phx.gbl...

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:e$**************@TK2MSFTNGP10.phx.gbl...

emid

1. Vertical scrolling will happen only if your controls overflows
vertically. To test this, place controls which overflows horizontally and vertically. Form will bring both scroll bars.

it overflows vertically too , but vertical scrollbar do not appear

2. If the controls are created dynamically, to reach individual

control, you

have to access Control Collection of your usercontrol

Shak.

yes that works for myUserControls on the form, but when i want to get
textBoxes on a myUserControl, i get a error : "getEnumator() does not

bla

bla....." . i cant traverse through the controls on myUserControl..

another question:
is it possible to reach with the name of the control?

[Shakir Hussain]

emid,

Try this

foreach(Control pControl in Form1.myUserControl.Controls)
{
//process the control.
}

this wont give compilation error.

Shak.

"e-mid" <someone@somewhere> wrote in message
news:u0**************@TK2MSFTNGP09.phx.gbl...

Here is the error message:

"foreach statement cannot operate on variables of type 'Form1.myUserControl' because 'Form1.myUserControl' does not contain a definition for
'GetEnumerator', or it is inaccessible"

thnkz
"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:uI**************@TK2MSFTNGP12.phx.gbl...

No. Its not possible to reach control by name. You can write a service
function which will return a control, if you pass a name. In the control
collection, you can check whether a particular control exists calling
"Contains" method. For that you need a control to find out.

Can you paste the complete error messages? I may get a clue whats
happening..

Shak.

"e-mid" <someone@somewhere> wrote in message
news:eC**************@TK2MSFTNGP10.phx.gbl...

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:e$**************@TK2MSFTNGP10.phx.gbl...
> emid
>
> 1. Vertical scrolling will happen only if your controls overflows
> vertically. To test this, place controls which overflows

horizontally

and

> vertically. Form will bring both scroll bars.

it overflows vertically too , but vertical scrollbar do not appear

> 2. If the controls are created dynamically, to reach individual control, you
> have to access Control Collection of your usercontrol
>
> Shak.

yes that works for myUserControls on the form, but when i want to get
textBoxes on a myUserControl, i get a error : "getEnumator() does

not bla

bla....." . i cant traverse through the controls on myUserControl..

another question:
is it possible to reach with the name of the control?

[e-mid]

thknz ...
Shak.

"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:uO**************@TK2MSFTNGP11.phx.gbl...

emid,

Try this

foreach(Control pControl in Form1.myUserControl.Controls)
{
//process the control.
}

this wont give compilation error.

Shak.

"e-mid" <someone@somewhere> wrote in message
news:u0**************@TK2MSFTNGP09.phx.gbl...

Here is the error message:

"foreach statement cannot operate on variables of type

'Form1.myUserControl'

because 'Form1.myUserControl' does not contain a definition for
'GetEnumerator', or it is inaccessible"

thnkz
"Shakir Hussain" <sh**@fakedomain.com> wrote in message
news:uI**************@TK2MSFTNGP12.phx.gbl...

No. Its not possible to reach control by name. You can write a service
function which will return a control, if you pass a name. In the control collection, you can check whether a particular control exists calling
"Contains" method. For that you need a control to find out.

Can you paste the complete error messages? I may get a clue whats
happening..

Shak.

"e-mid" <someone@somewhere> wrote in message
news:eC**************@TK2MSFTNGP10.phx.gbl...
>
> "Shakir Hussain" <sh**@fakedomain.com> wrote in message
> news:e$**************@TK2MSFTNGP10.phx.gbl...
> > emid
> >
> > 1. Vertical scrolling will happen only if your controls overflows
> > vertically. To test this, place controls which overflows horizontally and
> > vertically. Form will bring both scroll bars.
>
> it overflows vertically too , but vertical scrollbar do not appear
>
> > 2. If the controls are created dynamically, to reach individual

control,

> you
> > have to access Control Collection of your usercontrol
> >
> > Shak.
>
> yes that works for myUserControls on the form, but when i want to get > textBoxes on a myUserControl, i get a error : "getEnumator() does not bla
> bla....." . i cant traverse through the controls on myUserControl..
>
> another question:
> is it possible to reach with the name of the control?
>
>