Re: Synchronization thread help? - C# Discussion Boards

12-Apr-06 9:08

Thanks so much

I'm doing now

eric

Tooltip does not show up

smurfy3412-Apr-06 7:35

12-Apr-06 7:35

Hi:

I selected Tooltip from the toolbox and clicked on the form and then for the contriols I want a tooltip, I went to the properties and entered the text I want to show (I tried with an without double quotes).

But I cant get the tooltip to show up. Please could you tell me if I am missing doing something?

Thanks, smurfy

Manas Bhardwaj12-Apr-06 23:15

Manas Bhardwaj

12-Apr-06 23:15

Hey Smurfy,
Are you talking about Windows or Web application?

Manas

smurfy3414-Apr-06 4:19

14-Apr-06 4:19

Hi Manas:

this is for a windows application.

Thanks, smurfy

lvanerstrom14-Apr-06 8:18

lvanerstrom

14-Apr-06 8:18

I've had various issues with tooltips before as well. What I've found is that if I don't set the tooltip text at form load then the tooltip will never show up. I've often found that I have to set generic text and then set the tooltip active property to false until sometime later in my code I set the text I need and mark the tooltip active again. Using this method works every time. Maybe a bug in c# but i'm not sure.

Oh, and if you need the tooltip to show up even if the control it's bound to isn't the active control of the form then set it's show always property to true.

smurfy3414-Apr-06 9:14

Synchronization thread help?

14-Apr-06 9:14

thank you I will try that out.

Regards, smurfy

eric_tran12-Apr-06 7:28

12-Apr-06 7:28

Please help me

How can I call pass the ArrayList to 2 threads as parameter, and Synchronization thread
This is my code. My coding is not good, please help me

static object lockObject;

static void Main(string[] args)

{

ArrayList space = new ArrayList();

for (int i = 1; i <= 10 ; i++)
{
space.Add(i);

}

lockObject = new object();

lock (lockObject)
{
Thread t1 = new Thread(new ThreadStart(AccessData));
t1.Start();
}

lock (lockObject)
{
Thread t2 = new Thread(new ThreadStart(AccessData));
t2.Start();
}

Thread.Sleep(20*1000);

}

public static void AccessData(ArrayList arr)
{
// Thread.CurrentThread.IsBackground = true;

Random rand = new Random();

int x = rand.Next(space.Count);
space.Remove(x);
Console.WriteLine("x = " + x);

int y = rand.Next(space.Count);
space.Remove(y);
Console.WriteLine("y = " + y);

int newNumber = x + y;
Console.WriteLine("newNumber = " + newNumber);

space.Add(newNumber);

foreach (int inte in space)
Console.WriteLine(inte);

}

eric

Judah Gabriel Himango12-Apr-06 7:43

Judah Gabriel Himango

12-Apr-06 7:43

1. Locks are meant to be used inside the threaded code, not outside where you begin the thread. (In other words, use locks inside your AccessData method, not where you start the thread.)

2. You can start a thread with a parameter using something like this:

ParameterizedThreadStart threadStart = MyFunction;
Thread myThread = new Thread(threadStart);
myThread.Start(myArrayList);
...

void MyFunction(object parameter)
{
    ArrayList list = (ArrayList)parameter;
    // Use the list here. Be sure to lock it before using it.
}

3. Next time, use the <pre> tag around the code you post on this forum to preserve formatting.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: I luv teh choco
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

eric_tran12-Apr-06 8:11

12-Apr-06 8:11

Please help this. There are 2 errors down

using System;<br />
using System.Threading;<br />
using System.Collections;<br />
namespace ConsoleApplication2<br />
{<br />
	class Program<br />
<br />
	{<br />
		static object lockObject;<br />
<br />
		static void Main(string[] args)<br />
<br />
		{	 <br />
<br />
<br />
			ArrayList space = new ArrayList();	<br />
<br />
			for (int i = 1; i <= 10  ; i++)<br />
			{<br />
				space.Add(i);<br />
			 <br />
			}		<br />
<br />
			lockObject = new object();				 <br />
			 <br />
<br />
//error			Thread t1 = new Thread(new ParameterisedThreadStart(AccessData));		//error 	 	t1.Start(space);<br />
<br />
			Thread.Sleep(20*1000);<br />
<br />
		}<br />
<br />
	 <br />
		<br />
		public static void AccessData(object param)<br />
		{<br />
//			Thread.CurrentThread.IsBackground = true;<br />
			 <br />
			ArrayList list = (ArrayList)param;<br />
					<br />
			lock (lockObject)<br />
			{<br />
				Random rand = new Random();<br />
		<br />
				int x = rand.Next(list.Count);<br />
				list.Remove(x);<br />
				Console.WriteLine("x = " + x);<br />
						<br />
				int y = rand.Next(list.Count);<br />
				list.Remove(y);<br />
				Console.WriteLine("y = " + y);<br />
		<br />
				int newNumber = x + y;<br />
				Console.WriteLine("newNumber = " + newNumber);<br />
		<br />
				list.Add(newNumber);<br />
		<br />
		<br />
		<br />
				foreach (int inte in list)<br />
					Console.WriteLine(inte);<br />
		<br />
			}<br />
						<br />
		 <br />
		 <br />
		}<br />
			<br />
	}<br />
}<br />

eric

Judah Gabriel Himango12-Apr-06 8:25

Judah Gabriel Himango

12-Apr-06 8:25

eric_tran wrote:
Please help this. There are 2 errors down

Please clarify. I don't know what you mean by "2 errors down". Confused | :confused:

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: I luv teh choco
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

eric_tran12-Apr-06 8:29

12-Apr-06 8:29

Sorry Judah

There are 2 errors at the Thread Creation and Start lines

Please help

eric

Help required for Hiding in Wav Format

Judah Gabriel Himango12-Apr-06 9:07

Judah Gabriel Himango

12-Apr-06 9:07

I'm replying to your other post above.

nwr_mn12-Apr-06 7:23

nwr_mn

12-Apr-06 7:23

i just wanna know the basics of how it is done in Wav , i have understood the concept in Bitmaps and am able to hide the message in it using the key..

is the same need to be done in Wav File Format ?? or there is some change ..?? plz do help??

Thanx in advance

AMAN ANWAR

Re: Help required for Hiding in Wav Format

Corinna John12-Apr-06 21:25

Corinna John

12-Apr-06 21:25

Looking for this one?[^]

_________________________________
Please inform me about my English mistakes, as I'm still trying to learn your language!

How to encrypt XML file

engsrini12-Apr-06 7:15

engsrini

12-Apr-06 7:15

Hi all
I put my all configuration data into XML. I want encrypt the XML in such a way to secure it from miscreant.

what approach can i use.

Shall i encrypt each XML element value or
Shall i encrypt the whole XML file

if i encrypt the whole XML file ,then i need to decrypt the file and store it as a temporary XML file, by this temp. file i can process the data using XML document object. how to avoid this.

if i encrypt single XML element alone then the user can able to see the tags and they can able do corrupt.

so what the method i can use for XML encryption or is there anyway to secure the XML file from anonymus users?

I found one method
File.Decrypt(FileName)
but this throws me an IOException "Recovery policy configured for this system contains invalid recovery certificate." how to use this function??

Thanks in advance
Srini

How do I enter a field with the entry selected

smurfy3412-Apr-06 6:24

Re: How do I enter a field with the entry selected

12-Apr-06 6:24

Hi:

When I tab into fields in a GUI, say a numeric that has the value 0.00 in it, I want the value to be selected by default (highlighted in blue) when I tab in -- so that I can directly replace the entry by typing a different number.

Do the textbox and numeric objects provide some property I can set to achieve this?

Thanks, Smurfy

darkelv12-Apr-06 6:42

darkelv

12-Apr-06 6:42

You can do it in the Enter event:

private void textBox1_Enter(object sender, System.EventArgs e)
{
this.textBox1.SelectAll();
}

Steganography in BMP

nwr_mn12-Apr-06 6:10

nwr_mn

12-Apr-06 6:10

How is the KeyStream used ?? what is the purpose ?? Is it to find the Pixels in the Bitmap(Carrier) to hide Message bits?? PLz let me know Why is the KeyStream Used ?? is it For Encrypting the Message ?? Confused | :confused:

AMAN ANWAR

leppie12-Apr-06 6:51

leppie

12-Apr-06 6:51

Just stop, some people have tried to help you, but you dont seem to take advise or read English well. Dead | X|

xacc.ide-0.1.3.2

nwr_mn12-Apr-06 7:19

nwr_mn

12-Apr-06 7:19

so Leppie , that's ur name uh ... u think ur a kind of a genius person , just shut ur mouth if u can't help and let me give u some advise donot ever underestimate the person u donot know .... coz he might be the one ..... get it !!

AMAN ANWAR

Dave Kreskowiak12-Apr-06 8:05

Dave Kreskowiak

12-Apr-06 8:05

Look, the best place for information about the code in an article is in the forum at the bottom of that article's page. If you can't get ahold of the person immediately, be patient. Not everyone visits the site every day to check on their articles.

Posting the same question, what, 11 times will not get it answered. Frankly, it'll more likely get you ignored.

nwr_mn wrote:
coz he might be the one

Uhhh....The one what? Nevermind, I don't really care.

Dave Kreskowiak
Microsoft MVP - Visual Basic

leppie12-Apr-06 20:06

leppie

12-Apr-06 20:06

nwr_mn wrote:
so Leppie , that's ur name uh

no, it leppie.

nwr_mn wrote:
just shut ur mouth if u can't help

I tried to help, but in a different way, seeing the other 10 responses didnt make sense to you.

nwr_mn wrote:
let me give u some advise donot ever underestimate the person u donot know .... coz he might be the one

I'm heterosexual, sorry...

xacc.ide-0.1.3.2

Threading help?

eric_tran12-Apr-06 5:44