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Hi,
there could be two issues:
1.
OptiPlex wrote: CheckForIllegalCrossThreadCalls = false;
IMO is a very bad idea. If you feel a need to disable those checks, something is fundamentally wrong. Please read this article[^].
2.
AFAIK a lot of (all?) COM components (and that includes the Clipboard) require to be handled only by threads that are in a "Single Threaded Apartment", which also is a way to obtain thread safety. You can get things right by either specifying [STAThread] in front of your public static Main() method (which is there by default IIRC), or by setting it explicitly on the relevant thread, using Thread.GetCurrentThread().SetThreadAppartmentState().
[EDIT]
As one can set the AppState only once for a thread, this may not work for ThreadPool threads; so you may have to create your own Thread(s) instead.
[/EDIT]
Luc Pattyn
I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages
Local announcement (Antwerp region): Lange Wapper? Neen!
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thanks allot for your reply.
I was checking out the link u posted, but it seems like thats for controls/ui operations only.
Now im still looking for other sollutions 
thanks again
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As I said earlier, using CheckForIllegalCrossThreadCalls is bad, whatever your app is, as it does not solve anything, it is completely useless (that is what the article is about). So you should fix that; and then do something about STA as I indicated.
Luc Pattyn
I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages
Local announcement (Antwerp region): Lange Wapper? Neen!
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The project we are working on for school requires us to create a windows form in Visual Studio 2008. We have written the code for the database manager, dbHelper, employee and employee factory class. We do not know how to call the appropriate methods to the form. We are not allowed to put any code in the form other than get a appropriate methods. We are not using WPF.
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Depends on the solution structure. If the UI is in separate project, then you will need to add the reference to the other projects in the UI project and the call the method.
In case everything is in same solution, you can call methods marked public/internal through creating objects of respective classes. In case of static methods, you can directly call the method using class name. If you have different namespaces in the solution, use fully qualified names.
It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD
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Hello,
The KeyDown even is:
<Occurs when a key is pressed while the control has focus.>
What if i want to see ALL key presses? not only when the control has the focus?
Thanks
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On the main form there will be a property called Key Preview. Set that to true and the main forms KeyPress or KeyDown event (I'm not sure which) will be fired before the active control gets the event.
This property is only available on a windows form however, I'm quite sure it's not on any controls.
My current favourite word is: Sammidge!
-SK Genius
Game Programming articles start - here[ ^]-
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How can I do the following number 4 and 5 task using client server socket programming?
1. Client send a query as regular text to the server. [I can do this]
2. Server get the SQL from the client. [I can do this]
3. Server execute the query(Select statement). [I can do this]
4. Server return the query result as datatable or dataset to the client [How can I do this]
5. Client get the datatable or dataset and display to the client side.[How can I do this]
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1. Don't write everything in bold. It's a plain message, so it's wise to use plain text.
dokhinahaoa wrote: Server return the query result as datatable or dataset to the client
Serialize it into XML, that should do the trick.
dokhinahaoa wrote: Client get the datatable or dataset and display to the client side.
Deserialize your dataset
I are Troll
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Sorry !!!
Can I have sample code for that??
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dokhinahaoa wrote: Can I have sample code for that??
You'd best start here[^], samples can be obtained here[^].
Basically, you transform an object into XML (or binary), send it, and rebuild the class on the receiving end. Something like this;
"Class X -> becomes XML -> gets send -> gets received -> receiver makes class from XML" Enjoy
I are Troll
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Hi all
I would like to use Trace class or TraceListener to make code tracing in each thread at a different indendation level.
Function #1 From Thread#1
Function #2 From Thread#1
Function #1 From Thread#2
Function #3 From Thread#1
Function #2 From Thread#2
Function #3 From Thread#2
Most of Trace methods are shared so setting Trace.IndentLevel changes this value for all threads.
If I use 2 different objects for the same TraceListener, like for example ConsoleOutputTraceListener, there is no Thread safety guaranteed ( check IsThreadSafe for each object ).
Do you know some general approach to solve this issue?
Do I have to implement my own logger?
Kind Regards
Mn
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One suggestion is to create a thread-safe singleton class.
As you create a thread you should register it with the singleton, which assigns it an indentation level.
Any trace statements should be made through a method on the singleton class, which can then resolve the indentation level.
When the thread ends, it is important to de-register it from the singleton.
CCC solved so far: 2 (including a Hard One!)
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Hello I want to open an exe file within a form of my Application .How can I do this?
if the file was not sizable what shoud i do?
thank you
tahereh sadeghi
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Try the following....
Process MyProcess = Process.Start("myApp.exe", strApplicationPath);
Starts a process resource and associates it with a Process component.
For more detail can be found at this
link...
Thanks
Md. Marufuzzaman
Don't forget to click [Vote] / [Good Answer] on the post(s) that helped you.
I will not say I have failed 1000 times; I will say that I have discovered 1000 ways that can cause failure – Thomas Edison.
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You need to use Process Class.
Below is the sample code which is used to open a notepad.
using System;
using System.Diagnostics;
class ProcessStartDemo
{
static void Main(string[] args)
{
Process pr = new Process();
pr.StartInfo.FileName = "notepad.exe";
pr.StartInfo.Arguments = "Sample.text";
pr.Start();
}
}
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Hi, I'm trying to get the IP, subnet and gateway for my interfaces using IPInterfaceProperties but both UnicastAddresses and GatewayAddresses returns a collection...
How do I know which one to use?
Here is my loop and for now I'm just using UnicastAddresses[0] and GatewayAddresses[0] but that isn't always right
internal static NetworkAdapter[] AddExtraInformation(ArrayList adapters)
{
NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkAdapter adapter in adapters)
{
foreach (NetworkInterface networkInterface in networkInterfaces)
{
if (!DescriptionToName(networkInterface.Description).Equals(adapter.DeviceName))
continue;
adapter.Name = networkInterface.Name;
adapter.OperationalStatus = networkInterface.OperationalStatus.ToString();
IPInterfaceProperties ipProperties = networkInterface.GetIPProperties();
if (ipProperties.UnicastAddresses != null)
if (ipProperties.UnicastAddresses.Count > 0)
{
adapter.Address = ipProperties.UnicastAddresses[0].Address.ToString();
adapter.SubnetMask = ipProperties.UnicastAddresses[0].IPv4Mask.ToString();
}
if (ipProperties.GatewayAddresses != null)
if (ipProperties.GatewayAddresses.Count > 0)
adapter.Gateway = ipProperties.GatewayAddresses[0].Address.ToString();
break;
}
}
return (NetworkAdapter[])adapters.ToArray(typeof(NetworkAdapter));
}
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string hostName = Dns.GetHostName();
IPHostEntry ipEntry = Dns.GetHostEntry(hostName);
foreach (IPAddress ip in ipEntry.AddressList)
{
//Please check ip values
}
For example, if you want to get IPv4 value, use "ip" variable which is using foreach statement;
if (ip.AddressFamily.Equals(System.Net.Sockets.AddressFamily.InterNetwork))
string result = ip.ToString();
Best Regard...
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Thanks for your reply
I'm not sure how to tell which nic has the ip-number that I get from using your code.
Anyway, I changed my code to this, looping the addresses and checking for IsDnsEligible, that seems to do the trick or am I missing something?
foreach (UnicastIPAddressInformation address in ipProperties.UnicastAddresses)
{
if(address.IsDnsEligible)
{
adapter.Address = address.Address.ToString();
adapter.SubnetMask = address.IPv4Mask.ToString();
break;
}
}
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hi,
i want dll to change the pitch of the sound in my Music player project..
can any one help me plz...
i googled it but m no dll is working properly in my program.. 
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Hello,
i've got a custom UserControl (UserControl-Class with a panel in it) and now i want to let it interact as a container in the Designer. Well - on the web I found a lot of tutorials for this problem, but my problem is, that the designer doesn't put the Controls i add to my control to the panel. It put them into the UserControl itself.
So how can i tell the designer, that it should use "panel" as it's container and not the UserControl itself? I've tried different thinks like make a own class which extends "System.Windows.Form.Panel" and tell them, that it is the Container for the designer and puttet it into my UserControl but all those things doesn't work...
Thanks for your help
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You should have searched on CodeProject.
Take a look at Designing Nested Controls[^] by Yours Truly.
Hope this helps!
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'm having alittle trouble with the SOCKS5 protocol. Maybe someone here can help.
http://www.rfc-editor.org/rfc/rfc1928.txt
the initial request consist of 3 bytes
request[0] = 0x05;
request[1] = 0x01;
request[2] = 0x00;
the response contains 2 bytes
response[0] == 0x05;
response[1] == 0x00;
the next request is 10 bytes
request[0] = 0x05;
request[1] = 0x03;
request[2] = 0x00;
request[3] = 0x01;
(destination IP).GetAddressBytes().CopyTo(request, 4);
int byte1 = (destination Port) / 256;
int byte2 = (destination Port) % 256;
request[8] = (byte)byte1;
request[9] = (byte)byte2;
now this is where im having trouble. with the next response. the first 4 bytes are fine
response[0] == 0x05;
response[1] == 0x00;
response[2] == 0x00;
response[3] == 0x01;
but with the next 4 bytes its supposed to return an IP address to which im supposed to send udp data to. the bound address, but it returns an ip of 0.0.0.0. then the next two bytes are fine which is the bound port to send the udp data to. now why would it be returning a null ip? am I just suppsoed to use the proxy IP when it comes to UDP?
modified on Sunday, October 11, 2009 4:11 AM
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