I have an application that uses a LIstView.
Maybe 100 items each with 20 subitems.
The app looks at eack item and subitem twice.
I.e., it scans the entire set of data
item1, sub1,sub2,...
item2,sub1,sub2 ...
..
..
twice
I've never run it long enough for it to complete.
I'm using 3GHz CPU on an XPS by Dell
Could it be that accessing a ListView takes that long?
Thanks for any help
Nov 20 '05
21  1569 
We have 100 users here so we only use 2 of them. I understand that the
reasoning for so many, was just straight out impressed by the number. =)
How many users? 50k? 100k? What do you do?
-CJ
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:e5******** ******@TK2MSFTN GP12.phx.gbl... Yes - and over 2300 IP subnets and over 180 countries.
Major sites may have several DC's, minor sites have 1, and sites with less
than 100 users logon over the WAN.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... You have 145 Domain Controllers???
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:%2******** ********@tk2msf tngp13.phx.gbl. .. Sounds like something in your code.
I've currently got a project with a listview for Active Directory
Domain controllers and properties (properties in the subitems). In our
domain, there are currently 145 DC, so 145 listview items, each with 5
subitems. I don't see any slowness there at all.
Jerry
"TryingLikeHeck " <tr************ @aol.com> wrote in message
news:20******** *************** ****@mb-m16.aol.com...
> I have an application that uses a LIstView.
> Maybe 100 items each with 20 subitems.
>
> The app looks at eack item and subitem twice.
> I.e., it scans the entire set of data
> item1, sub1,sub2,...
> item2,sub1,sub2 ...
> .
> .
> twice
>
> I've never run it long enough for it to complete.
> I'm using 3GHz CPU on an XPS by Dell
>
> Could it be that accessing a ListView takes that long?
>
> Thanks for any help
>
>
Just thought about this too and don't know if it was brought up, but did you
try to Suspend the layout (calling SuspendLayout) which would prevent it
from being painted and taking up other valuable CPU time.
-CJ
"Cor" <no*@non.com> wrote in message
news:eN******** ********@tk2msf tngp13.phx.gbl. .. Hi Active,
Slow is always subjective.
When you have a very wide Wan, you will have many thin parts in the
pipeline and the listview will probably not be the most important in that.
When you are on a computer that has direct access the full datatable all
the time without any data access problem, your listview will become earlier a
part of that pipeline to get the data.
I think a good comparer is explorer, that is a listview also and the user
is accepting it.
Therefore, in my eyes, when your program is much slower than explorer in
colleting data, you have a problem.
Although when you use things as redim I really think, that you have to
check what the arraylist of other fast ilist class can do for you.
Just a though
Cor
53,000 computers - slightly more users as there is some shift work, etc.
where they share machines.
I am a team lead on the team that designs our desktop image (Windows,
Office, custom apps, etc) and does custom coding for our image as well. We
create tools, etc. for the support staff to use.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... We have 100 users here so we only use 2 of them. I understand that the
reasoning for so many, was just straight out impressed by the number. =)
How many users? 50k? 100k? What do you do?
-CJ
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:e5******** ******@TK2MSFTN GP12.phx.gbl... Yes - and over 2300 IP subnets and over 180 countries.
Major sites may have several DC's, minor sites have 1, and sites with
less than 100 users logon over the WAN.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... You have 145 Domain Controllers???
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:%2******** ********@tk2msf tngp13.phx.gbl. ..
> Sounds like something in your code.
>
> I've currently got a project with a listview for Active Directory
Domain > controllers and properties (properties in the subitems). In our domain, > there are currently 145 DC, so 145 listview items, each with 5
subitems. I > don't see any slowness there at all.
>
> Jerry
>
> "TryingLikeHeck " <tr************ @aol.com> wrote in message
> news:20******** *************** ****@mb-m16.aol.com...
> > I have an application that uses a LIstView.
> > Maybe 100 items each with 20 subitems.
> >
> > The app looks at eack item and subitem twice.
> > I.e., it scans the entire set of data
> > item1, sub1,sub2,...
> > item2,sub1,sub2 ...
> > .
> > .
> > twice
> >
> > I've never run it long enough for it to complete.
> > I'm using 3GHz CPU on an XPS by Dell
> >
> > Could it be that accessing a ListView takes that long?
> >
> > Thanks for any help
> >
> >
>
>
That is awesome. I have to ask, what is the name of the beast you work for?
I want to say something in insurance.. but I could be wrong.
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:Ol******** ******@TK2MSFTN GP12.phx.gbl... 53,000 computers - slightly more users as there is some shift work, etc.
where they share machines.
I am a team lead on the team that designs our desktop image (Windows,
Office, custom apps, etc) and does custom coding for our image as well. We
create tools, etc. for the support staff to use.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... We have 100 users here so we only use 2 of them. I understand that the
reasoning for so many, was just straight out impressed by the number. =)
How many users? 50k? 100k? What do you do?
-CJ
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:e5******** ******@TK2MSFTN GP12.phx.gbl... Yes - and over 2300 IP subnets and over 180 countries.
Major sites may have several DC's, minor sites have 1, and sites with less than 100 users logon over the WAN.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com...
> You have 145 Domain Controllers???
>
>
> "Jerry Ham" <No*****@Sompla ce.net> wrote in message
> news:%2******** ********@tk2msf tngp13.phx.gbl. ..
> > Sounds like something in your code.
> >
> > I've currently got a project with a listview for Active Directory
Domain > > controllers and properties (properties in the subitems). In our
domain, > > there are currently 145 DC, so 145 listview items, each with 5
subitems. I
> > don't see any slowness there at all.
> >
> > Jerry
> >
> > "TryingLikeHeck " <tr************ @aol.com> wrote in message
> > news:20******** *************** ****@mb-m16.aol.com...
> > > I have an application that uses a LIstView.
> > > Maybe 100 items each with 20 subitems.
> > >
> > > The app looks at eack item and subitem twice.
> > > I.e., it scans the entire set of data
> > > item1, sub1,sub2,...
> > > item2,sub1,sub2 ...
> > > .
> > > .
> > > twice
> > >
> > > I've never run it long enough for it to complete.
> > > I'm using 3GHz CPU on an XPS by Dell
> > >
> > > Could it be that accessing a ListView takes that long?
> > >
> > > Thanks for any help
> > >
> > >
> >
> >
>
>
Its an oil company - ChevronTexaco
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... That is awesome. I have to ask, what is the name of the beast you work
for?
I want to say something in insurance.. but I could be wrong.
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:Ol******** ******@TK2MSFTN GP12.phx.gbl... 53,000 computers - slightly more users as there is some shift work, etc.
where they share machines.
I am a team lead on the team that designs our desktop image (Windows,
Office, custom apps, etc) and does custom coding for our image as well.
We create tools, etc. for the support staff to use.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... We have 100 users here so we only use 2 of them. I understand that
the reasoning for so many, was just straight out impressed by the number.
=)
How many users? 50k? 100k? What do you do?
-CJ
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:e5******** ******@TK2MSFTN GP12.phx.gbl...
> Yes - and over 2300 IP subnets and over 180 countries.
> Major sites may have several DC's, minor sites have 1, and sites
with less > than 100 users logon over the WAN.
>
> Jerry
>
> "CJ Taylor" <no****@blowgoa ts.com> wrote in message
> news:vt******** ****@corp.super news.com...
> > You have 145 Domain Controllers???
> >
> >
> > "Jerry Ham" <No*****@Sompla ce.net> wrote in message
> > news:%2******** ********@tk2msf tngp13.phx.gbl. ..
> > > Sounds like something in your code.
> > >
> > > I've currently got a project with a listview for Active
Directory Domain
> > > controllers and properties (properties in the subitems). In our
domain,
> > > there are currently 145 DC, so 145 listview items, each with 5
subitems.
> I
> > > don't see any slowness there at all.
> > >
> > > Jerry
> > >
> > > "TryingLikeHeck " <tr************ @aol.com> wrote in message
> > > news:20******** *************** ****@mb-m16.aol.com...
> > > > I have an application that uses a LIstView.
> > > > Maybe 100 items each with 20 subitems.
> > > >
> > > > The app looks at eack item and subitem twice.
> > > > I.e., it scans the entire set of data
> > > > item1, sub1,sub2,...
> > > > item2,sub1,sub2 ...
> > > > .
> > > > .
> > > > twice
> > > >
> > > > I've never run it long enough for it to complete.
> > > > I'm using 3GHz CPU on an XPS by Dell
> > > >
> > > > Could it be that accessing a ListView takes that long?
> > > >
> > > > Thanks for any help
> > > >
> > > >
> > >
> > >
> >
> >
>
>
Ahhh now that just sounds fun. =)
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:e0******** ******@tk2msftn gp13.phx.gbl... Its an oil company - ChevronTexaco
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... That is awesome. I have to ask, what is the name of the beast you work for?
I want to say something in insurance.. but I could be wrong.
"Jerry Ham" <No*****@Sompla ce.net> wrote in message
news:Ol******** ******@TK2MSFTN GP12.phx.gbl... 53,000 computers - slightly more users as there is some shift work,
etc. where they share machines.
I am a team lead on the team that designs our desktop image (Windows,
Office, custom apps, etc) and does custom coding for our image as
well. We create tools, etc. for the support staff to use.
Jerry
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com...
> We have 100 users here so we only use 2 of them. I understand that the > reasoning for so many, was just straight out impressed by the
number. =) >
> How many users? 50k? 100k? What do you do?
>
> -CJ
>
>
> "Jerry Ham" <No*****@Sompla ce.net> wrote in message
> news:e5******** ******@TK2MSFTN GP12.phx.gbl...
> > Yes - and over 2300 IP subnets and over 180 countries.
> > Major sites may have several DC's, minor sites have 1, and sites with less
> > than 100 users logon over the WAN.
> >
> > Jerry
> >
> > "CJ Taylor" <no****@blowgoa ts.com> wrote in message
> > news:vt******** ****@corp.super news.com...
> > > You have 145 Domain Controllers???
> > >
> > >
> > > "Jerry Ham" <No*****@Sompla ce.net> wrote in message
> > > news:%2******** ********@tk2msf tngp13.phx.gbl. ..
> > > > Sounds like something in your code.
> > > >
> > > > I've currently got a project with a listview for Active Directory > Domain
> > > > controllers and properties (properties in the subitems). In
our > domain,
> > > > there are currently 145 DC, so 145 listview items, each with 5
> subitems.
> > I
> > > > don't see any slowness there at all.
> > > >
> > > > Jerry
> > > >
> > > > "TryingLikeHeck " <tr************ @aol.com> wrote in message
> > > > news:20******** *************** ****@mb-m16.aol.com...
> > > > > I have an application that uses a LIstView.
> > > > > Maybe 100 items each with 20 subitems.
> > > > >
> > > > > The app looks at eack item and subitem twice.
> > > > > I.e., it scans the entire set of data
> > > > > item1, sub1,sub2,...
> > > > > item2,sub1,sub2 ...
> > > > > .
> > > > > .
> > > > > twice
> > > > >
> > > > > I've never run it long enough for it to complete.
> > > > > I'm using 3GHz CPU on an XPS by Dell
> > > > >
> > > > > Could it be that accessing a ListView takes that long?
> > > > >
> > > > > Thanks for any help
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
I'll look at ArrayList. This is a converted VB6 program
Thanks
"Cor" <no*@non.com> wrote in message
news:eN******** ********@tk2msf tngp13.phx.gbl. .. Hi Active,
Slow is always subjective.
When you have a very wide Wan, you will have many thin parts in the
pipeline and the listview will probably not be the most important in that.
When you are on a computer that has direct access the full datatable all
the time without any data access problem, your listview will become earlier a
part of that pipeline to get the data.
I think a good comparer is explorer, that is a listview also and the user
is accepting it.
Therefore, in my eyes, when your program is much slower than explorer in
colleting data, you have a problem.
Although when you use things as redim I really think, that you have to
check what the arraylist of other fast ilist class can do for you.
Just a though
Cor
I'll look at that too. The listbox is only being read and the display is a
PictureBox.
Nothing shows up on the display until all at once the entire display
appears.
Thanks
"CJ Taylor" <no****@blowgoa ts.com> wrote in message
news:vt******** ****@corp.super news.com... Just thought about this too and don't know if it was brought up, but did
you try to Suspend the layout (calling SuspendLayout) which would prevent it
from being painted and taking up other valuable CPU time.
-CJ
"Cor" <no*@non.com> wrote in message
news:eN******** ********@tk2msf tngp13.phx.gbl. .. Hi Active,
Slow is always subjective.
When you have a very wide Wan, you will have many thin parts in the pipeline and the listview will probably not be the most important in that.
When you are on a computer that has direct access the full datatable all
the time without any data access problem, your listview will become earlier
a part of that pipeline to get the data.
I think a good comparer is explorer, that is a listview also and the
user is accepting it.
Therefore, in my eyes, when your program is much slower than explorer in
colleting data, you have a problem.
Although when you use things as redim I really think, that you have to
check what the arraylist of other fast ilist class can do for you.
Just a though
Cor
" active" <ac****@REMOV Ea-znet.com> schrieb I'll look at ArrayList. This is a converted VB6 program
Thanks
You are using the ActiveX Listview, not the .NET Framework listview?? This
can explain a lot! Interop can sloooooow down things considerably - apart
from the fact CJ mentioned that one should work with the the datasource not
the UI.
(BTW, did you start the thread? Are you TryingLikeHeck? I'm unsure...)
--
Armin http://www.plig.net/nnq/nquote.html http://www.netmeister.org/news/learn2quote.html
"Armin Zingler" <az*******@free net.de> wrote in message
news:eP******** *****@TK2MSFTNG P11.phx.gbl... " active" <ac****@REMOV Ea-znet.com> schrieb I'll look at ArrayList. This is a converted VB6 program
Thanks
You are using the ActiveX Listview, not the .NET Framework listview?? This
can explain a lot! Interop can sloooooow down things considerably - apart
from the fact CJ mentioned that one should work with the the datasource
not the UI.
The Properties list shows System.Windows. Forms.ListView
I think that means I'm using the >NET version. Right?
I don't actually remember deleting the old one and replacing it (I did so
much of that kind or thing.)
What made (makes?) you think I'm using the ActiveX version?
(BTW, did you start the thread? Are you TryingLikeHeck? I'm unsure...)
What does BTW stand for?
Yes. I have two ISP's
If I'm always online it's because I've converted a large app and as soon as
I clear up one problem I move on to another. And I've received wonderful
insight from this group. For example, the fact that just because single
stepping in the IDE highlights a statement does mean it actually got
executed. That's something it would take a long time to surmise. -
Numerous other things, like no use looking for a way to make the IDE
automatically compile only modules that have been changed since the last
compile. I was sure I only had to find the correct switch. Very helpful to
be told to stop looking. Anyway, I really appreciate the help and I am
trying.
I suggestion about ArrayList made me try dimensioning the arrays large
enough so that redim is never required, but that didn't help. There are
other thing going that may be using the time but I wanted to be sure
ListViews were not known to be time consumming.
Thanks for all the NG's past help and in particular your past help,
Cal
--
Armin
http://www.plig.net/nnq/nquote.html
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