How to combine 2 lists of textboxes

[weg22]

Hi all,

I have two lists of textboxes:

'Create list of all textboxes on error log data tab
el_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {addr_x100, addr_x101, _
addr_x102, addr_x103, addr_x104, addr_x105, addr_x106,
addr_x107, addr_x108, addr_x109, addr_x10A, _
addr_x10B, addr_x10C, addr_x10D, addr_x10E, addr_x10F})

'Create list of all textboxes on status data tab
sd_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {idr_x000, idr_x001, _
idr_x002, idr_x003, idr_x004, idr_x005, idr_x006, idr_x007,
idr_x008, idr_x009, idr_x00A, _
idr_x00B, idr_x00C, idr_x00D, idr_x00E, idr_x00F})
How do I combine these 2 lists into one list (e.g. "all_textboxes" )?
I tried the following:
all_textboxes = el_textboxes
all_textboxes.A ddRange(sd_text boxes)

but then when I go back and do some processing with el_textboxes, its
size seems to change. I'm guessing there's a better way of combining
the 2 lists?

Thanks in advance,
-weg

[Armin Zingler]

<we***@drexel.e duschrieb

Hi all,

I have two lists of textboxes:

'Create list of all textboxes on error log data tab
el_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {addr_x100, addr_x101, _
addr_x102, addr_x103, addr_x104, addr_x105, addr_x106,
addr_x107, addr_x108, addr_x109, addr_x10A, _
addr_x10B, addr_x10C, addr_x10D, addr_x10E, addr_x10F})

'Create list of all textboxes on status data tab
sd_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {idr_x000, idr_x001, _
idr_x002, idr_x003, idr_x004, idr_x005, idr_x006, idr_x007,
idr_x008, idr_x009, idr_x00A, _
idr_x00B, idr_x00C, idr_x00D, idr_x00E, idr_x00F})
How do I combine these 2 lists into one list (e.g. "all_textboxes" )?
I tried the following:
all_textboxes = el_textboxes
all_textboxes.A ddRange(sd_text boxes)

but then when I go back and do some processing

What kind of processing?

with el_textboxes,
its size seems to change.

Who's size? all_textboxes'?

I'm guessing there's a better way of
combining the 2 lists?

Do you experience an unexpected behavior or do you look for another way to
copy the items of both Lists into one?
Armin

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

the line of code:
all_textboxes = el_textboxes
just gives you 2 references to the same list.
maybe something like:
dim all_textboxes as new List(of ....)
all_textboxes.a ddrange(el_text boxes)
all_textboxes.a ddrange(sd_text boxes)

--
Terry
"we***@drexel.e du" wrote:

Hi all,

I have two lists of textboxes:

'Create list of all textboxes on error log data tab
el_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {addr_x100, addr_x101, _
addr_x102, addr_x103, addr_x104, addr_x105, addr_x106,
addr_x107, addr_x108, addr_x109, addr_x10A, _
addr_x10B, addr_x10C, addr_x10D, addr_x10E, addr_x10F})

'Create list of all textboxes on status data tab
sd_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {idr_x000, idr_x001, _
idr_x002, idr_x003, idr_x004, idr_x005, idr_x006, idr_x007,
idr_x008, idr_x009, idr_x00A, _
idr_x00B, idr_x00C, idr_x00D, idr_x00E, idr_x00F})
How do I combine these 2 lists into one list (e.g. "all_textboxes" )?
I tried the following:
all_textboxes = el_textboxes
all_textboxes.A ddRange(sd_text boxes)

but then when I go back and do some processing with el_textboxes, its
size seems to change. I'm guessing there's a better way of combining
the 2 lists?

Thanks in advance,
-weg

[weg22]

What kind of processing?

For Each _textbox As Windows.Forms.T extBox In el_textboxes
'Processing...
array(i) = 10
i = i + 1
Next

array() is the same size as the number of elements in el_textboxes.
When commenting out the "all_textbo xes" lines from above, the For loop
executes without any errors. However, when uncommenting the
"all_textbo xes" lines from above, I get an index out of range error
for array(i).

[Armin Zingler]

<we***@drexel.e duschrieb

What kind of processing?

For Each _textbox As Windows.Forms.T extBox In el_textboxes
'Processing...
array(i) = 10
i = i + 1
Next

array() is the same size as the number of elements in el_textboxes.
When commenting out the "all_textbo xes" lines from above, the For
loop executes without any errors. However, when uncommenting the
"all_textbo xes" lines from above, I get an index out of range error
for array(i).

I was not sure about the problem, but Terry probably has the answer.
Armin

[Mike McIntyre]

You may be seeing the list grow automatically to accomodate more than the
actual items it contains.

You can call List.TrimExcess to trim the unused slots in the list.

http://msdn2.microsoft.com/en-us/library/ms132207.aspx

--
Mike

Mike McIntyre [MVP]
http://www.getdotnetcode.com
<we***@drexel.e duwrote in message
news:11******** **************@ 50g2000hsm.goog legroups.com...

Hi all,

I have two lists of textboxes:

'Create list of all textboxes on error log data tab
el_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {addr_x100, addr_x101, _
addr_x102, addr_x103, addr_x104, addr_x105, addr_x106,
addr_x107, addr_x108, addr_x109, addr_x10A, _
addr_x10B, addr_x10C, addr_x10D, addr_x10E, addr_x10F})

'Create list of all textboxes on status data tab
sd_textboxes = New List(Of Windows.Forms.T extBox)(New
Windows.Forms.T extBox() {idr_x000, idr_x001, _
idr_x002, idr_x003, idr_x004, idr_x005, idr_x006, idr_x007,
idr_x008, idr_x009, idr_x00A, _
idr_x00B, idr_x00C, idr_x00D, idr_x00E, idr_x00F})
How do I combine these 2 lists into one list (e.g. "all_textboxes" )?
I tried the following:
all_textboxes = el_textboxes
all_textboxes.A ddRange(sd_text boxes)

but then when I go back and do some processing with el_textboxes, its
size seems to change. I'm guessing there's a better way of combining
the 2 lists?

Thanks in advance,
-weg

[Cor Ligthert[MVP]]

Like Armin I don't understand your problem.

However you can start stopping this kind of code and use a for index loop.
(Every array or collection has a count or length property)

For Each _textbox As Windows.Forms.T extBox In el_textboxes
'Processing...
array(i) = 10
i = i + 1
Next