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I read a post somewhere that stated to not give buffer.Length to BeginWrite method but use (int)stream.Length or something approching...
I'll try this week... :p
Nous ne sommes que des grains de sable mais nous sommes ensemble. Nous sommes comme les grains de sable sur la plage, mais sans les grains de sable la plage n’existerait pas.
Poème en langue yamato(japonais ancien)
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I have had similar problems working with CryptoStream <-> generic stream routines, and found differences between FileStream and MemoryStream, particularly that the Flush method didn't seem to work with MemoryStreams. In this case, I got no data until I closed the stream (which destroys the MemoryStream).
The workaround I used was to provide the size of the unencrypted data as part of the encyrpted output, append an extra block of random rubbish to the Cytpro stream after my data, and truncate back when decrypting.
It is worth trying with NetworkStream / CryptoStream since it could cause your problem?
If not, we are probably going to need a cut-down code fragment...
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This message is made of fully recyclable Zeros and Ones
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I don't Flush... but as I use asynchronous I think I should ?
Nous ne sommes que des grains de sable mais nous sommes ensemble. Nous sommes comme les grains de sable sur la plage, mais sans les grains de sable la plage n’existerait pas.
Poème en langue yamato(japonais ancien)
modified on Monday, June 22, 2009 8:36 AM
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It seems that there's a known bug with the .Net framework when trying to serialize in a CryptoStream attached to a NetworkStream.
A bug has been discovered in the .NET library.
It is not possible to serialize to a CryptoStream that is attached to a NetworkStream because the Deserialize call on the receiving end of the stream will block until the stream is closed by the sending end.
You might note that all the MSDN examples use a backing MemoryStream, so perhaps this behavior is expected, but not documented.
A simple rule to avoid this problem is: never attach a CryptoStream to a NetworkStream. We sketch a possible implementation strategy:
* Use a CryptoStream attached to a MemoryStream.
You can serialize objects to this structure, then safely close the stream.
Then, get the byte array from the MemoryStream and write (or serialize, if part of a larger object) it to the NetworkStream. On the receiving side, reverse this process: recover the byte array, decrypt the bytes, then deserialize the result.
A working exemple is given here using this method:
http://www.marcclifton.com/Default.aspx?tabid=138[^]
Nous ne sommes que des grains de sable mais nous sommes ensemble. Nous sommes comme les grains de sable sur la plage, mais sans les grains de sable la plage n’existerait pas.
Poème en langue yamato(japonais ancien)
modified on Sunday, June 21, 2009 4:06 PM
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Thanks! I didn't know that, and will have to remember.
Good Luck!
No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.
This message is made of fully recyclable Zeros and Ones
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I tweaked my code to use a CryptoStream over a MemoryStream to serialize into a NetworkStream as mentioned in the article and it works well !
Nous ne sommes que des grains de sable mais nous sommes ensemble. Nous sommes comme les grains de sable sur la plage, mais sans les grains de sable la plage n’existerait pas.
Poème en langue yamato(japonais ancien)
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Good - well worth knowing, thanks!
No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.
This message is made of fully recyclable Zeros and Ones
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Hi,
How can we know the path of .msi file, where it is being executed from?
Thanks In Advance
--Naren
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Try this. string exedir = AppDomain.CurrentDomain.BaseDirectory;
Excellence is doing ordinary things extraordinarily well.
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Hi I made a service that runs under the system account. The service gets a message from my server that tells it to shut down if no user is logged on. But because my service is run under system I can use this code to find out who is logged on.
string a;
a = System.Security.Principal.WindowsIdentity.GetCurrent().Name.ToString();
I was wondering does any one know a different way to find if a user is logged on.
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Well it seems it’s only for terminal server but if any one knows it this exists in c# for a normal workstation that would be cool
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There is a class Win32_logonSession. Not sure if that can help you.
जय हिंद
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Hello,
In my application, I want to print some informations.
I can print this informations with e.Graphics.DrawString () .
The problem that I want to print in the same page ,that contains informations printed with e.Graphics.DrawString () I want to print command PCL but the problem is that I have in the result 2 pages.
- the first one contains informations printed with e.Graphics.DrawString ().
- The second contains informations of PCL command
The problem that I want in the result 1 page that contains both information.
I send To you a part of my code:
code use e.Graphics.DrawString ():
PrintDocument Page = new PrintDocument(); Page.PrintPage += new PrintPageEventHandler(cardDocument_Page); Page.Print();
Code of cardDocument_Page(....):
e.Graphics.DrawString("String1", cardFont, Brushes.Black, 400, 300);
e.Graphics.DrawString("String2", cardFont, Brushes.Black, 500, 300);
Code that send commande directely to the printer:
DOCINFO di = new DOCINFO();
int pcWritten = 0;
PrintDirect.OpenPrinter("\\\\10.1.0.40\\HPLaserJ", ref lhPrinter, 0);
PrintDirect.StartDocPrinter(lhPrinter, 1, ref di);
PrintDirect.StartPagePrinter(lhPrinter);
string st1;
st1 = "\x1b**1M\x1b(14Y\x1b(s0p8.00h12.0v0s0b105T" + Strin+ "\x1b**0M";
PrintDirect.WritePrinter(lhPrinter, st1, st1.Length, ref pcWritten);
PrintDirect.EndPagePrinter(lhPrinter);
PrintDirect.EndDocPrinter(lhPrinter);
PrintDirect.ClosePrinter(lhPrinter);
classes used by PrintDirect:
public class PrintDirect { [DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall)]
public static extern long OpenPrinter(string pPrinterName, ref IntPtr phPrinter, int pDefault);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall)]
public static extern long StartDocPrinter(IntPtr hPrinter, int Level, ref DOCINFO pDocInfo);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern long StartPagePrinter(IntPtr hPrinter);
[DllImport("winspool.drv", CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern long WritePrinter(IntPtr hPrinter, string data, int buf, ref int pcWritten);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern long EndPagePrinter(IntPtr hPrinter);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern long EndDocPrinter(IntPtr hPrinter);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern long ClosePrinter(IntPtr hPrinter);
I want to print informations (PCL and other) in the same page, but not in 2 pages.
Thank you for your Help.
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I'm trying to save a unicode utf8 string --> "سلام" in a feature of a featureclass, but it is saved like "????".as ArcMap support different encodin and also Farsi that I'm working with, It should be possible through my program.but I didn't find any way yet.anybody knows about this?
<br />
<br />
feature = fc.CreateFeature();<br />
feature.Shape = point;<br />
feature.set_Value(feature.Fields.FindField("Name"), o.Name);<br />
feature.Store();<br />
fc is an IFeatureClass, feature is an IFeature and o.Name is a unicode.utf8 string.in watch window:
feature.get_value(feature.Fields.FindField("Name"))--> is OK
but
fc.GetFeature(1).Get_Value(feature.Fields.FindField("Name")) --> is "????"
and this is what is saved. What should I do? 
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If you're sure that your data is intact when sent to the component (easily checked with some breakpoints) then you should ask in their forums[^].
DaveBTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)
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Thanks for your reply, yes I'm sure about that. I tried a lot to create an acount in thier Forum that you mentioned, but every time I recieve this message:
We're sorry, but we are experiencing a delay in creating or confirming your ESRI Global Account.
You will be notified via e-mail as soon as you may begin using your account.
Thank you for your patience.
and I never recieved any Email from them.this is why I came here to ask my question, as most of my problem has been solved in this site 
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Hi,
I have to develop UI in windows mobile in which the icons come one by one in a line by using left/right key (AS developed in iphone). The selected icon gets focus and enlarged, others are going in background of screen.
How to develop ?
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Maybe, if you ask this in the Mobile Development forum?
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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I am writing a Windows.Forms application and I have a some objects that I want to be Global. Example of these objects are an object for maintaining a collection of remote resources, and a "Task list" type object that shows all running tasks. There is only ever 1 instance of these objects, they are created when the application starts and are destroyed when the application ends.
I use these objects throughout my application and inorder to do so I have to pass an "Environment" object to each form, this Environment object serves as a pointer to the global objects.
This seems very kludgy, is there a way that you can have global objects shared across the application without having to pass them to each form/thread you create?
Thanks in advance!
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A public static class?
जय हिंद
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But how would that help pass the object instance?
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If I understand correctly, you need a object TaskList across the application. Assuming it has a set of properties, you can have a public static class TaskList, with all the properties needed, which will be available across the application.
If it is just a list of tasks and there are some more things of this sort, have all these as properties in a common static class and expose them as properties of type List.
Since the class would be public, you can access it anywhere in the application.
जय हिंद
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The public static class contains the global object instance (or is the global object if you prefer).
public static class GlobalObjects
{
public static List<Task> taskList = new List<Task>();
}
...
GlobalOjects.taskList.Add(task);
...
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This message is made of fully recyclable Zeros and Ones
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