C# Discussion Boards - CodeProject

madhusri1-Mar-06 22:35

1-Mar-06 22:35

Hi all,

I would like to know of how to get the value member of every item in the listbox.

It is clear that i can get the valumember of the selected item using the selectedvalue property. But my requirement is that i need to check the values of all the items immaterial of if it is selected or not.

How can this be achieved? please help me out with this.

Thanks in advance

Regards,
Madhusri

Thanks and Regards
MadhuSri

Re: listbox - valuemember access

Stefan Troschuetz1-Mar-06 23:43

Stefan Troschuetz

1-Mar-06 23:43

Try this one:

for (int index = 0; index < listBox.Items.Count; index++) 
{
  PropertyInfo info = listBox.Items[index].GetType().GetProperty(listBox.ValueMember);
  object valuemember = info.GetValue(listBox.Items[index], null);
}

www.troschuetz.de

Re: listbox - valuemember access

madhusri2-Mar-06 0:23

madhusri

2-Mar-06 0:23

Stefan Troschütz wrote:
for (int index = 0; index < listBox.Items.Count; index++) { PropertyInfo info = listBox.Items[index].GetType().GetProperty(listBox.ValueMember); object valuemember = info.GetValue(listBox.Items[index], null);}

Stefan,

thanks for the sample code.
it helped me to get the valuemamber.

Thanks and Regards
Madhu

plz help

nidheeshkayal1-Mar-06 22:35

nidheeshkayal

1-Mar-06 22:35

i need to list all the methods inside a class.

is it possible?

plz help

Re: plz help

madhusri1-Mar-06 22:37

madhusri

1-Mar-06 22:37

nidheeshkayal,

this can be done using reflections...
You can use the GetMethod() function and specify in it if u need to get all the private methods or public methods

Thanks and Regards
Madhu

-- modified at 4:42 Thursday 2nd March, 2006

Re: plz help

nidheeshkayal1-Mar-06 22:42

nidheeshkayal

1-Mar-06 22:42

here my input is class name not dll.

and plz tel me how can i do it with reflection

nidheesh

Re: plz help

Vasudevan Deepak Kumar1-Mar-06 23:14

Vasudevan Deepak Kumar

1-Mar-06 23:14

You can locate the type in the assembly after loading it.

The GetMethods() invoked on the type woudl return all the methods.

Vasudevan Deepak Kumar
Personal Web: http://www.lavanyadeepak.tk/
I Blog At: http://deepak.blogdrive.com/

Re: plz help

Divyang Mithaiwala1-Mar-06 22:41

Divyang Mithaiwala

1-Mar-06 22:41

Hello nidheeshkayal,

Have you use Object Browser. It is open when double click on any "namespace" in References.

Regards,
Divyang Mithaiwala.

Re: plz help

nidheeshkayal1-Mar-06 22:47

nidheeshkayal

1-Mar-06 22:47

hi
my problem is

there is one list box in my program and a dialog.

when i am selecting one class name from the dialog

then all methods inside the class should display in to the

list box.

how can i do this without reflection

nidh

Re: plz help

AFSEKI5-Mar-06 5:07

AFSEKI

5-Mar-06 5:07

Use typeof(yourclass).GetMethods(). That's all. ( checkout Type.GetMethods() in MSDN Library )

MSN Chat

albCode1-Mar-06 22:20

albCode

1-Mar-06 22:20

Hi people...
I am planing to develop small msn chat so can someone suggest me any idea...

Regards

Re: MSN Chat

Vasudevan Deepak Kumar1-Mar-06 23:45

Vasudevan Deepak Kumar

1-Mar-06 23:45

MSN like chat or using MSN Messenger API?

Vasudevan Deepak Kumar
Personal Web: http://www.lavanyadeepak.tk/
I Blog At:
http://www.dotnetjunkies.com/weblog/deepak/
http://deepakvasudevan.blogspot.com/
http://deepak.blogdrive.com/

Re: MSN Chat

albCode2-Mar-06 0:11

albCode

2-Mar-06 0:11

Thanks 4 ur reply...

Maybe before i wasn't clear on my question, but what i want is how sign in messenger and all my contact list should display in one listbox, aslo possiblity to send and receive messages with any online user.

Regards

Hyper Threading or Multi processor issue

fregolo521-Mar-06 22:07

fregolo52

1-Mar-06 22:07

Hello,

I'm developing a application with .NET for the exe file et C++ 7.0 for a DLL.
I have a multi threading application. It works on my dev computers (PIII or P4). But I start the application in an other computer (P4-HT), the application is launched but it "blocks" during initialisation. I think 2 threads run in the same time on 2 CPU cores.
How to resolve this problem ? Can I force my application to run on only one core ?

thanks

Freg

Re: Hyper Threading or Multi processor issue

Divyang Mithaiwala1-Mar-06 22:54

Divyang Mithaiwala

1-Mar-06 22:54

Hello Freg,

Have you seen this.

Regards,
Divyang Mithaiwala.

Re: Hyper Threading or Multi processor issue

fregolo521-Mar-06 23:18

fregolo52

1-Mar-06 23:18

Thank you,

I'll see this.

Freg

Re: Hyper Threading or Multi processor issue

MF1-Mar-06 23:07

1-Mar-06 23:07

I think your application didn't have proper sync. on the thread. The problem may not be hitted in single CPU machine. It seemed to be a deadlock on the threads.

MultiThreading

AB77711-Mar-06 21:56

AB7771

1-Mar-06 21:56

Hi all,

I am creating an application in which i need to create a number of Threads dynamically, so i create an array of threads and i have written a method for the thread which is executed when the thread is started.
The same method is executed by all the threads,
i call another function from this method and pass a value as a parameter to that function, but what happens is all the threads get the same value in the parameter.
now how can i synchronize the threads so that different values are passed by different threads?

Hope u all understand my problem.

Thanks,

Pramod

Re: MultiThreading

Guffa1-Mar-06 22:13

Guffa

1-Mar-06 22:13

Parameter values are passed on the stack, and as each thread has it's own stack, the parameters for each call will be in separeate memory areas. If you really send separate values in the calls, they would be kept separate.

There has to be something else that you do that break the thread safety, like using the same object in all threads or using a static variable.

---
b { font-weight: normal; }

Re: MultiThreading

AB77711-Mar-06 23:50

AB7771

1-Mar-06 23:50

Thanks for the reply,

i have written a 2 for loops in the Thread method,
in those loops i pick a value from arraylists, here i want the thread to pick values from the same arraylist but the indexes should be different, so i have taken values from the arraylist depending on the thread name, threads are named in sequence as they are created.

Now here i want the thread to pick the value from the arraylist and pass this value to a method to do some processing and then the thread should sleep for some time span,

i tried it but all the threads sleep whereas i want the thread which has processed all the above code should only sleep.

i want each thread to pick a value from the list send that value to a method
receive the values from the method and then sleep for suppose 5 mins

but when i call the sleep method all the threads sleep, whereas i want the current thread to sleep

any ideas?

Thanks,

Pramod

Network Connection

fjlv20051-Mar-06 19:41

fjlv2005

1-Mar-06 19:41

Good day,

I have a server and several workstations connected to the server. I wanted to make an application that monitors the computers(workstations). There are two ideas that i know but i still dont know the details of those two ideas.

First idea is to create an application on server computer that when there is a workstation connected to the LAN, it updates the application. Is there a way in C# to communicate with Windows that there is a computer(workstation) connected?? as we know windows explorer can see all connected computers and does not show the disconnected ones. So basically windows knows what computer are connected, and my problem is how can we get those connected computers that windows knows?

Second Idea is to use sockets but i would not prefer this one because what if there are 100 workstations, it would mean i have to install client-side application on each computer, so it would be a stressful task, and every time there is an update on client-side code, i have to update all workstations w/c is again stressful.

I really hope i can get an answer from my first idea because i only need to install and if there an update, i would only update the server and nothing to install on client computers(workstations).

I hope somebody can share there knowledge, Thanks a lot,

load multiple images

prgramya1-Mar-06 19:24

prgramya

1-Mar-06 19:24

hi iam working on a c# application. i want to dipaly set of 9 images in 9 pictureboxes from a folder on form load.how can i do this. can anyone help
thanks
ramya

Re: load multiple images

mav.northwind1-Mar-06 19:48

mav.northwind

1-Mar-06 19:48

Hi!
What's the problem?
Just fill one PictureBox after the other...

Regards,
mav

--
Black holes are the places where god divided by 0...

how to refresh DataGridView MDI Application

GetFree123GetFree1-Mar-06 19:16

GetFree123GetFree

1-Mar-06 19:16

Hi,
i have a MDI application with MainForm (MdiContainer) and a ChildForm, MainForm has a text box and when user enters some text and clicks search button

i have the following Click event so that i show the results in ChildForm

1) ChildForm _cf=new ChildForm(string CustName);
2) LaunchChildForm(_cf);

1) ChildForm(string CustName) is a constuctor on the ChildForm that does the customer search and sets the datasource of the dataGridView....something like...

_results ....;
dataGridView1.DataSource = _results;

2) so that it only shows one instance of the Child From.

My Question is it only works for the first time, but it doesnt work when i do the search again, seems like it does not refresh the dataGridView?

is there anything i can do?
Thanks

64 or 32 bit

Jared Parsons1-Mar-06 19:09

Jared Parsons

1-Mar-06 19:09

How can you determine at run time in C# if you're running on a 32 or 64 bit machine

Jared Parsons
jaredp@beanseed.org
http://jaredparsons.blogspot.com/[^]

Last Visit: 31-Dec-99 18:00 Last Update: 1-Jun-24 4:53

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