Re: Receive and send in two single threads - C# Discussion Boards

Receive and send in two single threads

27-Aug-02 8:50

include the DLL as a reference, then you can use it just like any of ther other classes in the framework. Smile | :)

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"All programmers are playwrights and all computers are lousy actors."

Browse directory

Mazdak27-Aug-02 6:07

Mazdak

27-Aug-02 6:07

Does C# has browse directory dialog?Something like SHBrowseForFolder that we use in VC.

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

Re: Browse directory

Sijin27-Aug-02 7:56

Sijin

27-Aug-02 7:56

These may help
http://www.codeproject.com/cs/miscctrl/folderbrowser.asp[^]
http://www.codeproject.com/cs/miscctrl/folderseldlg.asp[^]

May the Source be with you
Sonork ID 100.9997 sijinjoseph

Re: Browse directory

Mazdak27-Aug-02 7:59

Mazdak

27-Aug-02 7:59

Thanks.

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

Rickard Andersson²⁰27-Aug-02 4:23

27-Aug-02 4:23

Is it possible to create a client/server socket that can send data in the main thread and receive data in a separeted thread?

And one thing more:

In my second thread, that thread that receives data, I want to show the data in a ListBox in the main thread. Is it safe to pass the Form object of the main thread to the second thread.... hm.. difficult to explain... I hope you understand!

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Nnamdi Onyeyiri27-Aug-02 4:39

27-Aug-02 4:39

why use sockets? im surethere is a way to pass information between theads without the use of sockets.

Suspicious | :suss: Email: theeclypse@hotmail.com URL: http://www.onyeyiri.co.uk
"All programmers are playwrights and all computers are lousy actors."

Rickard Andersson²⁰27-Aug-02 5:34

27-Aug-02 5:34

I'm not using sockets to communicate with my threads!

I wonder if I can do the all receiving in a separeted thread and if I can send data in a second thread.

But then... In my second thread, which one I do I all ReadLine on my NetworkStream, I want to show the received data from the socket in a list box IN THE MAIN THREAD, which one I WriteLine to my NetworkStream!

Do you understand now?

If you can answer the first thing it's enough! Smile | :)

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

leppie27-Aug-02 5:57

leppie

27-Aug-02 5:57

Hi

You shouldn't have to bother with threads. Asynchronous methods already provided (see BeginXXXX() andEndXXXX() of Stream class) should do the trick and everything could be run from the main thread.

Hope this helps Smile | :)

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Rickard Andersson²⁰27-Aug-02 7:09

27-Aug-02 7:09

I will try that!

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

James T. Johnson27-Aug-02 6:00

James T. Johnson

27-Aug-02 6:00

Rickard Andersson wrote:
send data in the main thread and receive data in a separeted thread

You could share the object between the threads; but you'll have to make sure you take measures to ensure both aren't used at the same time.

Rickard Andersson wrote:
Is it safe to pass the Form object of the main thread to the second thread

Yes its safe, its what you do with the ListBox that could be dangerous.

The key to multi-threaded Windows Forms UI interaction should answer your questions about how you should go about using it safely from your second thread.

James
"And we are all men; apart from the females." - Colin Davies

Rickard Andersson²⁰27-Aug-02 7:07

27-Aug-02 7:07

James T. Johnson wrote:
but you'll have to make sure you take measures to ensure both aren't used at the same time.

can I use lock(...) to prevent that?

or, I use async sockets...

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Converting string to a date

James T. Johnson27-Aug-02 13:12

James T. Johnson

27-Aug-02 13:12

Rickard Andersson wrote:
can I use lock(...) to prevent that?

Yes, you can.

Rickard Andersson wrote:
I use async sockets...

That would work too; however you don't get to control the thread that is used for it (a ThreadPool thread is used to execute the method)

James
"And we are all men; apart from the females." - Colin Davies

halbichmi27-Aug-02 4:24

halbichmi

27-Aug-02 4:24

Does anyone know how to convert a string to DateTime? I am reading in a string from a flat file, that is being parsed and certain pieces need to be converted to other types. But I don't know how to declare a variable to date type in C#.

Paul Riley27-Aug-02 4:33

Paul Riley

27-Aug-02 4:33

Convert.ToDateTime or DateTime.Parse

Paul

halbichmi27-Aug-02 4:41

halbichmi

27-Aug-02 4:41

I tried something like the following and it didn't like it.

string tempstr, blk_tkt_date1;

tempstr = inpu.Substring(5, 8);
blk_tkt_date1 = Convert.ToDateTime(tempstr);

The error I get is "Cannot implicitly convert type 'System.DateTime' to 'string'".

Paul Riley27-Aug-02 4:48

Paul Riley

27-Aug-02 4:48

Because blk_tkt_date1 is defined as a string.

What you're doing here is converting it to a datetime and passing it back into a string, which isn't possible.

Depending on what you really want to achieve: either define blk_tkt_date1 as a DateTime or replace the ToDateTime line with

<br />
blk_tkt_date1 = Convert.ToDateTime(tempstr).ToLongDateString();<br />

There are several alternatives to ToLongDateString, depending which format you want it in.

halbichmi27-Aug-02 4:54

halbichmi

27-Aug-02 4:54

Thank you! I am needing to convert the string that is coming in to a DateTime.

Once again, thank you!

cache problem

Rüpel27-Aug-02 3:44

Rüpel

27-Aug-02 3:44

hi,

i'm using XmlDocument.Load(strURL) in my application. when i upload a new version of the file at strURL on my webserver and load that document again in my windows-app via XmlDocument.Load() i still get the old version of the file.

when i open my browser, input the url and type reload, my application gets the new version afterwards.

so somewhere in between the old version of the file is cached, but i really want XmlDocument.Load() to connect to the server and get the latest version of the file (what my browser does, when i choose "reload"). any suggestions?

does this have something to do with the proxy-server in my company here? or is it a behaviour of my windows-system, which can be turned off (by any programmer, for instance me)? Wink | ;)

:wq

Re: cache problem

Nnamdi Onyeyiri27-Aug-02 4:03

27-Aug-02 4:03

i seem to remember seing something today about caching in .NET is 'powerful', maybe you need to weaken it Big Grin | :-D

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"All programmers are playwrights and all computers are lousy actors."

OS Version

Nnamdi Onyeyiri27-Aug-02 1:42

27-Aug-02 1:42

how would i go about detecting the OS version on the user system?

Suspicious | :suss: Email: theeclypse@hotmail.com URL: http://www.onyeyiri.co.uk
"All programmers are playwrights and all computers are lousy actors."

Re: OS Version

Paul Riley27-Aug-02 2:54

Paul Riley

27-Aug-02 2:54

Environment.OSVersion

Paul

Re: OS Version

Nnamdi Onyeyiri27-Aug-02 2:59