ASync Sockets Throwing Strange Exception - C# Discussion Boards

How start a application at beginning windows(about registry)

Developer_124-Dec-05 14:35

24-Dec-05 14:35

Hi all!

I did do a application with Visual C#.My aim is start this application at each beginning windows.
For of this,i am writing value to "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" registry key.

My codes is those:

/*line-1:*/if(Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run",true).GetValue("clnv1")==null)
{ Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run",true).SetValue("clnv1",@"C:\WINDOWS\system32\clnv1.exe");
}

My application is starting at beginning windows.But right now shows warning!!!(on line-1) Cry | :((

Warning is that:
An unhandled exception of type'System.IO.FileNotFoundException' occurred in mscorlib.dll

Additional information: Could not find file "clnv1.exe".

Please help me!!! Confused | :confused:

-- modified at 20:36 Saturday 24th December, 2005

Re: How start a application at beginning windows(about registry)

Developer_124-Dec-05 21:52

Developer_1

24-Dec-05 21:52

Friends,please help me!!! D'Oh! | :doh:

Re: How start a application at beginning windows(about registry)

S. Senthil Kumar25-Dec-05 1:38

S. Senthil Kumar

25-Dec-05 1:38

I don't get it, does your app run fine if you start it normally? I find it strange that you get a FileNotFoundException on the exact file that you're currently executing. Are you trying to launch it again from within the executable?

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Voice input in C#

rajajee24-Dec-05 6:03

rajajee

24-Dec-05 6:03

hi my name is zubair i am making an application for IP telephony
so i want to get input from MIC so how i can accomplish it in C#
thanks

Zubair Asghar

Need help for Parsing HTML

dr_hema24-Dec-05 6:03

dr_hema

24-Dec-05 6:03

i'm using MIL-parser libarary which i get this libarary from code project site

i'm trying to select data from the axWebBrowser and trying to find in the parsed tree but some data found and another not found

f any one can help ???

Getting .NET types programaticly?

mikker_12324-Dec-05 3:09

mikker_123

24-Dec-05 3:09

Is it possible to get .NET types using some C# code? For example:

<br />
		private void InitializeTypes()<br />
		{<br />
			cmbBlah.Items.Clear();<br />
<br />
foreach (NetType nt in GetNetTypes())<br />
			cmbBlah.Items.Add(nt.ToString());			<br />
		}<br />

?

tnx in advance

Re: Getting .NET types programaticly?

[Marc]24-Dec-05 4:19

[Marc]

24-Dec-05 4:19

The NetType you're talking about is actually System.Type[^] . You can get it using Object.GetType[^], Assembly.GetTypes[^] etc. For example, if you want to fill a combobox with all public types in your assembly, you can do:

using System.Reflection;

private void InitializeTypes(){
  cmbBlah.Items.Clear();

  // Get current assembly
  Assembly currentAss = Assembly.GetCurrentAssembly();
  // Get all public types from the assembly
  Type[] publicTypes = currentAss.GetExportedTypes();

  foreach (Type type in publicTypes){
    cmbBlah.Items.Add(type.ToString());
  }
}

Welcome to the wonderful world of reflection! Smile | :)

Merry Christmas! Jig | [Dance]

"..Commit yourself to quality from day one..it's better to do nothing at all than to do something badly.."
-- Mark McCormick

ASync Sockets Throwing Strange Exception

ColonelSanders24-Dec-05 2:21

ColonelSanders

24-Dec-05 2:21

After a bunch of ASync socket calls, I get the exception below. Google-ing it came up with only 4 hits, 2 from the same person, none with answers.

This is happing in a server application, so if no one has a solution, is there another way to run a TCP server (average of 500 simultaneous, sustained connections. Max possible connections is about 5000, but VERY unlikely) without having a thread for each client, that would be great.

-------------------------------------------------------
"The Undo operation encountered a context that is different from what was applied in the corresponding Set operation. The possible cause is that a context was Set on the thread and not reverted(undone).".

at System.Threading.SynchronizationContextSwitcher.Undo()
at System.Threading.ExecutionContextSwitcher.Undo()
at System.Threading.ExecutionContext.runFinallyCode(Object userData, Boolean exceptionThrown)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteBackoutCodeHelper(Object backoutCode, Object userData, Boolean exceptionThrown)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)

Re: ASync Sockets Throwing Strange Exception

ColonelSanders24-Dec-05 18:00

ColonelSanders

24-Dec-05 18:00

Update:

You can see my socket connection class code Here.

The exception occurs while executing a method in another class called from inside "OnDataRecieve".

-- modified at 5:35 Friday 30th December, 2005

Coloring rows in DataGrid

Yoyosch23-Dec-05 23:22

Yoyosch

23-Dec-05 23:22

My DataGrid is serviced by a DataTable. Suppose I would like to make a red background for rows 3 and 5 in this DG. How to make it?

transfer my inbox mails to database

sreesiri23-Dec-05 19:22

sreesiri

23-Dec-05 19:22

hi all,

iam able to sending mails using SMTP sever..
but now,how can i send my inbox mails to my database?

can any one know it?

thanks in advance...

byeeeeeeeeeee
sree

Send File

flysky61823-Dec-05 17:25

flysky618

23-Dec-05 17:25

How can i send file from computer A to computer B

Re: Send File

HakunaMatada23-Dec-05 17:34

HakunaMatada

23-Dec-05 17:34

Windows Sockets... Smile | :)

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

Re: Send File

Developer_124-Dec-05 11:43

Developer_1

24-Dec-05 11:43

You must learn network programming for this.

TcpListener,TcpClient,Socket,NetworkStream Classes defined for network programming in Visual C#

This classes in System.Net.Sockets namespace.

Intentionally Slowing Down Program

Drausin23-Dec-05 11:01

Drausin

23-Dec-05 11:01

I'm writing a program that does a lot of heavy computing. I eventually want this program to run as a screen saver. But because of all the heavy computer the program does, after a few minutes of running, the fan turns on - wasting energy and making noise, two things a screen saver shouldn't do.
So far I've tried various ways of putting the current thread to sleep for some time, to give the computer a rest, but I haven't had very much succes. Is there a better way to slow down my program or as least (safely) manage it so the fan doesn't come on?

Thanks,
Drausin

Re: Intentionally Slowing Down Program

HakunaMatada23-Dec-05 17:41

HakunaMatada

23-Dec-05 17:41

Fan? Which Fan? Confused | :confused:

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

Re: Intentionally Slowing Down Program

Colin Angus Mackay24-Dec-05 2:49

Colin Angus Mackay

24-Dec-05 2:49

I think he means the fan on his processor - you know, the thing that cools it down and stops it from overheating.

My: Blog | Photos

"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius

Re: Intentionally Slowing Down Program

mav.northwind23-Dec-05 20:31

mav.northwind

23-Dec-05 20:31

You could try modifying your process priority. I don't know if this will reduce the absolute processor load or if it's just relative to other processes...

Regards,
mav

Re: Intentionally Slowing Down Program

[Marc]24-Dec-05 2:33

[Marc]

24-Dec-05 2:33

You can try System.Threading.Thread.CurrentThread.Sleep(somemillisecondsvalue); in your working loop...

Merry Christmas! Jig | [Dance]

"..Commit yourself to quality from day one..it's better to do nothing at all than to do something badly.."
-- Mark McCormick

Re: Intentionally Slowing Down Program

Drausin27-Dec-05 6:31

Drausin

27-Dec-05 6:31

Yea, I ended up doing that - putting a sleep function into my loop (as opposed to on a separate thread w/ a timer), and it seemed to work pretty well.

Thanks everyone,
Drausin

BinaryWriter is Not writing in Case of .sql files

VenkataRamana.Gali23-Dec-05 9:14

VenkataRamana.Gali

23-Dec-05 9:14

Hello all,

I am reading different types of files from DB & Storing at perticular place.

My code is as follows...

<br />
FileStream fs = new FileStream(sFileName, FileMode.Create, FileAccess.Write);<br />
BinaryWriter bw = new BinaryWriter(fs);<br />
				<br />
bw.Write(buffer);<br />
//Here buffer is byte[], this value getting properly<br />
bw.Flush();<br />
<br />
bw.Close();<br />
fs.Close();

This is code is not writing proper data only in case of .sql files

Why .sql not writing properly, anybody help me. If there is any alternate in C# inform me.

regards
GV Ramana

Re: BinaryWriter is Not writing in Case of .sql files

Rob Graham24-Dec-05 11:53

Rob Graham

24-Dec-05 11:53

Might be useful if you described what you mean when you say :

Gali Ramana wrote:
sql not writing properly

what are yu expecting? What are you getting?

Absolute faith corrupts as absolutely as absolute power
Eric Hoffer
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke

Is remote service running?

picasso223-Dec-05 9:12

picasso2

23-Dec-05 9:12

I have a service in a remote system that has a fixed port number.
Does any body has a simple code how to check if service is running using C#

Any help will be greatly appreiated

Re: Is remote service running?

HakunaMatada23-Dec-05 17:43

HakunaMatada

23-Dec-05 17:43

I think the best way is to just try to connect. If the Sevice is listening then the connect will succeed else it will fail. If it fails, Service is not running.

Hope this helps... Smile | :)

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

C# - Interview Questions/Areas

AJ12323-Dec-05 8:58

AJ123

23-Dec-05 8:58

Hi

I have been working with C# for the past few years and I am currently looking for another C# position. My current job involves working with the C# language and a large API. Thus I haven’t had too much exposure to some of the key areas of .NET.

So I am trying to identify a few key areas to study in preparation for interviews. Hopefully with the help of CodeProject articles Smile | :)

I am thinking about looking at:

- Brushing up on C# - boxing and a few other intricacies
- Web Services
- ADO.NET
- Perhaps looking at studing for some MCP Exams. Any one have any opinions on them? Worth while?

Any suggestions on key areas and resource would be much appreciated.

Cheers
Rich

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