Comments by pdoxtader (Top 132 by date)

Dave is absolutely correct. Another thing to consider is that depending on how computer savvy your students are, they may just open task manager and kill your watchdog application. A much better solution has been offered by Ravi below. Just deny access to any windows features that you want to restrict using Group Policy Editor. That's the correct way to handle this, and it's what admins in other schools or libraries do.

That isn't my codeplex project, but I would click the "Discussions" link and then have a look at the "Image Resolution" discussion. If you don't find what you're looking for in the discussion, ask the dev.

The problem is that the function I provided accepts a string, and the new function you are trying to use returns Byte[]. You need to set up a new function that accepts Byte[], and write code in it to handle the byte array.

I did a search for vb. Net questions, found one and answered it. I didn't even notice the creation date. I didn't look any deeper in my search results the 2 pages or so. If the Admins don't like my answer for any reason, they can remove it. But no one is going to think I'm deliberately site driving. Just look at my history.

I didnt notice the date of creation... Just that it had been updated recently. I think it is.

Exactly. +5

He didn't specify that it needs to be a programming language, did he?

Lol.

I was actually thinking about that after I posted it. Updating now...

Thanks man.

I posted a solution and an explanation. hope that helps.

- Pete

Yes, this will work. But you have rewritten it so completely that unless you understand what a lambda expression is, and have a grasp on what the Dispatcher does in WPF you just won't understand it. And lets be honest here - this guy doesn't understand basic threading concepts and didn't know that you can only update UI elements from the UI thread before posting this question.

I bet I could find a way to throw a ternary expression in there to really confuse him... Lol. But maybe instead one of us should actually explain it to the guy. If no one has mercy on him, maybe I'll do it myself later.

You're going to have to provide come code, and a little more information. This is just not enough. Post the client and server code reliant to the initial connection.

So... let me get this straight. You've posted all this SQL code, but what you really want to know is simply how to fill a ComboBox with the contents of another ComboBox?

You're either not passing an instance of frmUser, but instead passing it's type, or your trying to open the frmUser type. It's hard to tell with the code you've provided.

You need to pass an INSTANCE by ref to that function, and then .show() it. Not it's type.

- Pete

See the "<pre lang="c#">"? He's talking about web design. Nice catch too - I would have just told him about System.Windows.Forms.Screen, because he gave so little information.

Oh, never mind. Lol. I confused that with: "<%@ Page Language="

Yeah, we don't know.

- Pete

Because it hasn't been created yet. You're running this code as the form is being shown for the first time... as the application is starting up, right? And the problem you're having is that nothing is happening because the windows handle hasn't been created yet for that control. Well, the control will be nothing until it's available to be used.

Why would you want to use separate applications for this? Why not simply use separate threads?

Memory is shared between threads.

Yeah... I don't see the problem. Chris's solution still applies. If you're still having trouble, you're going to need to be a little more clear.

This isn't the way it works here. You need to attempt it yourself, and when you run across a problem, ask a question about it here.

What you're doing with this question is asking us to write the code for you, and no one here is going to do that.

Awesome. Glad I could help.

You wouldn't attempt to run forms on separate threads... and wouldn't need to. You can create threads, do whatever work you need, and then update whatever form you need to using a delegate and .Invoke() the way I just described above.

-Pete

Threading is easy... At least I think so. I'll post some example code in a few.

-Pete

Also, you seem like you have some coding experience (just judging from what you wrote in your question). So I think you already know that you will have to do some pixel comparison using images (bitmaps). If you didn't - well then that's a good place to start.

I think this question is too broad. People here will feel like you want them to write the app for you... and they won't do that. I'm surprised you don't have people beating you up about it already. You need to do the research yourself and start coding. Then if you get stuck, ask a question here.

I would let the installer handle that for you. If you think there's going to be a problem if the fonts already exist on the system, it's easy to know for sure. Just install the fonts on a machine before installing your app using your installer. If there's a problem, you'll see it.

Limiting users to a specific browser is a bad idea. You should instead attempt to support a subset of the most popular browsers - for instance maybe IE, Chrome, Firefox and Opera. It's a pain... but the non IE browsers in the list above generally follow the standards more closely then IE, and because of that code you write usually works well across them. You may need to detect and code parts of your web application specifically for IE, but of course you can't leave support for it out.

Just my 2 cents.

Agreed. With this question, you're not asking us to help you solve some problem - you're asking us to teach you how to code... and that's not our responsibility - it's yours. You need to go to Google, do searches, look at examples, and attempt to do this on your own. If you get stuck, come back here and ask us how to solve THAT problem. And give us some code to look at (show us where your stuck).

Oh... yeah. I forgot to mention that client isn't a local variable anymore. Yep - getting rid of that Dim was exactly the right thing to do.

Awesome. I'm glad it worked out for you. Your welcome... and if You click "accept solution", I'd really appreciate it.

Good luck with the rest of the project.

-Pete

The problem this time was that we were using client before it was finished being created. Change ClientConnection's constructor to look like this:

Public Sub New(ByVal Client As TcpClient, ByRef _callback As UpdateListInvoker)
UpdateListBox = _callback
TCPClient = Client
ClientIP = Client.Client.RemoteEndPoint.ToString
AllClients.Add(ClientIP, Me)
Dim notice As New Threading.Thread(AddressOf SendConnectedNotice)
notice.Start

ReDim data(TCPClient.ReceiveBufferSize)
TCPClient.GetStream.BeginRead(data, 0, CInt(TCPClient.ReceiveBufferSize), AddressOf ReceiveMessage, Nothing)
End Sub

Private Sub SendConnectedNotice()
Threading.Thread.Sleep(100)
UpdateListBox("Connected: " & ClientIP)
End Sub

And that should be it. I have it working on my machine.

Oh, and the last line of code in the constructor should be "notice.start"... that way by the time we try to use client in form1, it's finished being created. Meaning I think you should move the "TCPClient.GetStream.BeginRead..." out of the constructor. Maybe put it in it's own function.

-Pete

Here ya go: https://hostr.co/Z9xq2ggnIknt

Let me know if you have any trouble.

Updated the solution. I think this is what you need.

Ok, well this IS the correct way to use delegates. I've done it many times. I'm going to put together a quick and dirty test app to verify that I haven't forgotten anything here... but again: this IS the correct way to do it. If this isn't working for you, then there's something else wrong in your code that we can't see here given what you've posted.

Have a look at the async usage on this page:

http://www.w3schools.com/ajax/ajax_xmlhttprequest_send.asp

It's not smooth because sometimes your browser is trying to read the image while your c# application is writing it. You need to get some kind of synchronization going.

For starters, you can minimize this by writing each new frame from c# every 100 ms, and READING it in the browser every 50ms. It still won't be smooth, but it'll be better. The best way to do this is to ASK for a new frame every 100 ms via xmlhttprequest. Only respond to the xmlhttprequest when the new image is completely written, and only update your img when xmlhttprequest returns.

Your on the right track. Do you realize that you have the new Date(),getTime(); commented out? If you aren't getting updated, and that's the way your code actually is, then it's because of browser caching. That line should look something like:

imgTag.src = imgTag.name + "?date=" + new Date().getTime();

I wouldn't use Math.Random(). You don't need it.

Does your client need to be a browser? And how large is each frame? If they are 600k or less, then writing to the disk isn't your bottleneck. Writing 600k jpegs to disk 30 times a second only amounts to 18MB/sec of disk bandwidth.

And if your trying to send "frames" larger then that, you need to rethink this whole thing... a video stream that uses up 18MB / sec of network bandwidth is not really viable for most end users anyway.

Yeah... We'll need a lot more information then that.

You shouldn't use popups. Chances are they'll just be blocked anyway. Use a modal window instead - something like tinybox2 and the like.

What did you convert? And why? If you downloaded version 3, could could have simply added that .dll to you're project, and not have had to convert anything.

And what do you need to do that this library doesn't? With this library, you can send and receive simultaneously. You can have 250 conversations going over a single port (using channels). You can send and receive a file at the same time while also sending your own text or data, throttle bandwidth at the server, track clients by an id you assign them...

I've already done the work your asking about, and tested it, and hundereds of people have downloaded it, and tested it, and written clients for other operating systems for it...

And it's really simple to use. So I'm confused. What do you need to do in your application that you couldn't do more easily and quickly using that library?

I just had another look at your description here so I can try to better understand what your asking... and it looks to me like you would need to use two channels, using this library. One for your login and commands (text), and one for your byte data. That's a very simple setup, and extremely easy to do with this library.

No one else here is going to write that code for you... good luck.

-Pete

Dave's right. Exit Sub, or a simple Return will get you out of that Sub. Calling Application.Exit() from a background thread is ugly at best. In general, you want to let the user decide when he / she wants to close the application - not have it suddenly disappear.

In general, people here will not help you do anything that seems hackish, or illegal. They will also not help you circumvent security measures taken against you... because they will assume that you did something rotten to deserve being blocked or banned.

Aside from that, if you call people here stupid because you don't like their answers, no one else will want to answer your questions either. I don't, and won't.

Think about that before responding to the next guy who answers a question for you. After all, we're not obligated to help you at all.

-Pete

Lol.

smtp.UseDefaultCredentials should be set to true, and I believe Gmail requires an SSL connection. Try using my class - it'll make this easier for you.

-Pete

Glad I could help.

If you can install a service on the machine containing the files, you can just set up a FileSystemWatcher, something like this:

http://www.codeproject.com/Articles/3192/Watching-Folder-Activity-in-VB-NET

and then have your remote machines connect to that to get the paths of the files they need to transfer.

-Pete

"It sounds like caching 30 files isn't going to do you any good at all. Frankly, I have no idea what you meant by that."

Dave, I took it to mean that he's got some code that searches the whole file system (or a large part of it) every time a remote machine needs a file. That's why he and I were talking about caching or log files with the names of the 30 (or so) most downloaded files.

-Pete

Have you ever written a file copy application to test this yourself? Don't trust microsoft's native application. You don't know what they're doing besides copying bytes from one location to another. Do it YOURSELF.

I have, and I was able to see a performance benefit while copying as many as 500 files at once. To my surprise, I discovered that the real delay in copying files wasn't reading and then writing the bytes - it's in the file creation itself (for smaller files - this is a surprisingly complicated subject).

Don't just take what you see using Microsoft utilities (or on MSDN) as the bottom line. Do it yourself. Test it yourself.

-Pete

Welcome. Hope it works out for you.

Agreed. Way too little information.

This question, and the ensuing heated discussion is just hilarious... I don't know Sergey. Maybe we need someone to formulate a question like this once in a while just for the comedic value.

Awesome answer... +5.

Awesome. Glad it worked out for you.

The error is telling you that you have two OnUserConnect's. One of them is the one you just showed me, the other is only different by it's return value (Private Function OnUserConnect(context As Alchemy.Classes.UserContext) As Alchemy.OnEventDelegate). You have to choose one of them to use... the other must be deleted.

Yes... the signatures have to be different. That's a VB.NET thing. You'll have to choose one or the other.

Also, look the the callback methods in your c# code. That's where you'll find the signature for your callback methods.

I just added to the solution. Have you tried the 2nd way?

Ok, well then you'll have to create it on load and hide it until someone mouses over it. You can play games with the div dimensions (set them to width:1px; height:1px), or use document.getElementById("yourDiv").style.display = 'none'; and document.getElementById("yourDiv").style.display = 'block';

By the way - it would really have helped if you had given that in your question description. You should think about updating the question... other people won't be as nice as I am, and will vote your question down because of it... leave you unpleasant comments... lol.

Give as much information as you can in the description, including any code you've written that you think you could use help with.

- Pete

Ravi, I'm glad you were able to get enough from our answers to put a solution together for yourself, and thank you for posting it here. Having said that, I hope you don't mind if I give you a little friendly advice...

While I'm sure this works for you, to me it looks a bit disorganized and difficult to read. And you are missing opportunities to make some of this code reusable.

I see you took what you needed from the class I posted, and that's great. But if you had simply used the class instead, you could have avoided about half of that clutter - and saved your email functionality in a convenient and reusable class file.

Also, consider putting all your variable / object declarations at the top of your functions - separate from the functional code. This will improve the clarity of your code, and help while you're troubleshooting.

Best of luck,

- Pete

I think he was hoping for a vb.net solution Griff...

- Pete

You're going to have to post what your background thread is doing, and the code you're using to update the background image for anyone to have enough information to answer you.

I updated the solution to show usage. Please have a look.

- Pete

Yes, although I found that you could get a performance increase while copying multiple SMALL files from and to the same drive, as long as you kept the number of threads you were using small (10 or 15 or so). If you're copying large files, then copying them sequentially and un-buffered is the way to go.

But this whole subject is pointless now... I don't think the OP (or anyone else) should pursue this anymore. That's the point I was trying to make in my solution... Microsoft has thoroughly covered it now in their current implementation of windows.

Glad it worked out for you.

Great answer... Got my 5.

Lol. Yeah, they made the array size assignment value zero based. I have no idea why they would do that, and I've always thought it was stupid and un-intuitive also.

And then Microsoft hired me.

One of the first things that I noticed working for this company was that the people who work there are the smartest, the hardest working, and the nicest people I've ever been lucky enough to work with. Also, the company makes them feel appreciated, and they are treated very well. They come and go when they like (I mean your boss is not watching the clock, and people tend to show up when they want, stay as long as they need to, and take time as they need it and never stress about it. The cool thing about that is that people seem to work harder, like their job more, and stay later.). More interesting is that I work in product testing, so I get to see how manual testing is done, bugs are opened and resolved, and be a part of one of the automated testing teams... and I can tell you that if it's been in the product this long, there's a good reason and it's by design.

I can't imagine what it is... lol. Maybe I'll ask one of the guys on that team, but I'm absolutely sure that this is the case... and when I ask them, and they explain it, I'll have an "Ohhhhh" moment.

- Pete

Ok, so if the arrow is part of the string returned from the database, then he will be left with a ">" after using my solution. But my solution is just an example of how to remove specific characters from a string... I would hope he'd realize he can just use it again to remove the ">" that's left behind in that case, ie:

Me.TextBox1.Text = Me.TextBox1.Text.Replace(">", "")

- Pete

Please see my reply to your comment.

Actually, my answer is just plain correct. It doesn't matter how many dashes there are, or what order they are in, or if they are adjacent. They will be removed.

I just tested it to confirm this, by the way, before I responded to you to make sure I was right.

- Pete

Oh - and the two dashes? That's part of an arrow he was drawing for us, pointing to his example text - not the example of his string.

Yes, there are 100 ways to skin a cat.

I can do any number of hacky seeming things... I could do this, and more. I could open windows up on the windows login screen, for instance, and imitate the windows login screen to capture someone's credentials. That doesn't mean I'm writing viruses. I'm sure Grif and Dave can do lots of stuff that they wouldn't offer to help people do here also. And they learned it from somewhere... The difference between us and this guy is that he was stupid enough to ask about it HERE, where people will assume he's writing a virus and bash him about it.

I'm just not assuming that... and by the way - that link I posted? It was the 1st thing that came up on google when I googled it. A MSDN discussion about exactly this...

It's not a secret (how to do this), and he will find out how if he really looks. So lets all just get down off our high horses for a minute here.

Lol... Your welcome.

I'm glad it worked out for you.

A channel, or a task identifier is a is a TCP communication concept not implemented by Microsoft. If you want to roll your own TcpListener / TcpClient wrappers, you'll have to implement this yourself. This is how it works:

TcpListener and TcpClient - out of the box, don't do communication synchronization. They'll let you send bytes at the same time, but they'll stutter and stall while it's happening, drastically reducing performance. When I started building these classes, I knew I'd have to deal with that.

I accomplished it by sending a synchronization byte back and fourth between the client and the server while they are connected. Whoever has the synchronization byte can send bytes, and whoever doesn't only listens and receives bytes. To me, it was kind of like hockey players passing a puck back and fourth... so I nicknamed the synchronization byte the "puck".

If you implement a system like this, you have the option of making each side's turn with the puck very limited... lets say that whoever has the puck can only send a maximum of 5k bytes with it. That means that the puck is changing hands very quickly, and to the end user you can make it look like you are sending and receiving bytes at the same time when actually you are just carefully synchronizing who's talking and who's listening.

Lastly, I had to build some kind of logical packet header, or when the bytes arrived on the other end, the receiving machine wouldn't know when to stop listening... wouldn't be able to tell what was the puck, and what was user data. My packet headers are made up of three bytes: a channel identifier byte, and two packet size bytes. The two packet size bytes are parts of a short - together, cast into a short, they hold the total number of user bytes sent along in this packet. The channel byte is a number that represents a logical communications channel. You send your bytes along with this channel number, and when they arrive on the other end, they arrive with this channel number. So you can have 1 - 255 different things being send or received AT ONCE, bandwidth allowing. You just need to handle the logic involved with processing bytes as they arrive with that channel id.

So, potentially, you can have 254 different things being sent or received at the same time over a single port with these classes.

If you want to roll your own, well then that's the concept... but why reinvent the wheel? I spent weeks working on this, testing it, using it in projects I was / am working on professionally... it's been on Codeproject.com for more then a year, and since then people have found and offered fixes for bugs... ran into problems and offered help to each other... it has even had an android client written for the server class, and although I haven't seen it, I'm told that it's in use all over the country.

Using it is simple and straight forward, and if you have a question you should look through the conversation on it's Codeproject page... if you don't find the answer there, just ask me and I'll help you out.

- Pete

Reading this, I realize that you have rejected just about everything I've said. I don't think your ready for this... get yourself a book.

- Pete

You need to build that kind of resilience in yourself... No one is going to do it for you, and I'm fairly sure there isn't a block of code someone can just drop in here, and your problem is solved.

You have to catch the disconnects, and reconnect, and then handle the resumption of your data transfer yourself... and it may NOT be possible "maintain the connected status". One of the computers may have been unplugged, or disconnected from the network. You have to handle that too.

You just need to spend the time and build this.

- Pete

Ok, I had another look at your question, and the answer is that you need to create your own PROTOCOL, or language you use to communicate between client and server. Most importantly, one side needs to be able to tell the other when it's DONE talking, so the other knows it his turn. XML is a good tool for this kind of thing.

I'll post some working code over the weekend for you.

Once you create a connection, you can send messages back and fourth over the same connection from either end.

Again, you're just not understanding how this works... download the example project, and try it out. Once you connect to the server with the client, you can send files back and fourth and send messages back and fourth from either end over that connection... at the same time, if you like.

The "puck" you're talking about is just a name I gave for the synchronization byte that's passed back and forth between the server and the client. It's not unnecessary or useless - it's actually irreplaceable if you want to do the things those classes can. Like for instance, send text back and fourth WHILE your simultaneously uploading and / or downloading a file, or transferring data on other channels over a SINGLE PORT.

The problem here is that you really don't understand the way this works. You can't NOT have a server. There has to be a machine that's listening for a connection (the server), and one that attempts to connect to it (the client). There's no getting around this. This is just the way it is.

If you want either machine to be able to connect to the other wherever you would like them to, then you have to run a server and a client on BOTH machines.

If all you want to do is send text messages, you can do that with these classes - and very easily. Simply connect to the machine you have the server class running and listening on, send your text, and disconnect. The whole thing will happen very quickly... It's not like because these classes do MORE then your looking for, that there will be some penalty if all you want to do is send text.

I've offered you a Ferrari, and you're telling me that you think it's unnecessary and useless because it can do 200 mph, and all you want to do is go 30.

I hope you'll understand when I tell you that I find that point of view frustrating and silly.

But hey - if you don't want to use my classes - then go ahead and re-invent your own wheel. And best of luck to you...

- Pete

When I used this to relay mail through the Gmail account, I believe I left useSSL at it's default value (True). When I used it to send mail through my (current) company's mail server, I had to set it to False. You'll have to experiment with it and see what works with each mail server you're trying to use... some will support SSl, and some won't (depending on the server configuration).

As far as some users requiring it, and others not... I only ever used THIS code with two Gmail accounts, so I can't speak to that. But it doesn't sound likely to me.

I'm not sure what your asking me... The example I gave you will give you a reference to the button control you're looking for. If you run the code example I gave you, and then replace

"yourbutton" with the name of the button control your looking for, and:

' your code here

with

theControlYourLookingFor.Text = "Test"

You will accomplish what you need... you will have found a button control by it's name, and set it's text.

Also, a little bit of friendly advice: Use descriptive variable / object names, use Camel Case, and replace the default designer set names immediately. The compiler will discard the names you choose anyway, so there's no penalty for using a name like backgroundThreadCreatedAfterAppStart, or something like that.

We use descriptive names so that other people reading your code won't need to spend so much time trying to figure out what the purpose of a sub or function is, and it's much easier to understand. Even if no one else will ever read your code, imagine coming back to this project a year or three down the road, and trying to remember and figure out what YOU were doing...

Readability is everything.

- Pete

Well, then I guess he'd better start using jpeg. Lol... Your right. He didn't specify... I don't think he cares. I think he's just getting a handle on image compression, and this its not a bad place to start.

That is probably your problem. Windows 7 x64 is a workstation, not a server o/s. It has a 15 concurrent connection limit. If you need to make sure can have all 96 remote machines connect concurrently, you'll need to run your software on a server o/s.

Just for testing purposes, remove your SQL code form the equation. REM it out, and return a static list. If that works, you know the problem is your SQL code.

What operating system are you running on the server these RTUs connect to?

This really isn't enough information... And you will need to attempt to write the code yourself and then come to us if you get stuck. I can't write it for you. Do you have 100 of these in the field, all trying to talk to your public IP on a different port? How does the data arrive? XML? You just need to give us more... or failing that, hire a consultant to handle it for you.

Yes, and he may want to trim the text in the textbox - unless he wants the 2 possible empty spaces. ( str = TextBox1.Text.Trim.Substring(0,2) )

Glad it worked out for you.

Maybe I misunderstood him, but I think he's asking if the function I gave him should be in the click event... and the answer to that is of course no. He should CALL it from the click event, if that's what he wants though...

Outside, in the class.

You can not access a UI element from a background thread. Only code executing on the UI thread can access UI elements.

You need to learn how to use delegates. That's the way background threads can pass data to the UI thread so that UI elements can be updated.

Have a look here: http://www.codeproject.com/Articles/30458/Delegates-in-VB-NET

Yeah... this gets a +5. :)

He's asking where your stuck - what it is you're having trouble with. Be specific. We'll give you code examples if we know what your having trouble with... but we're not going to write your application for you.

ThePantomUpvoter told you... no? He said that the property you needed was the Password property, not the Text property. Have you tried that out? He also wrote that you should have read the documentation for PasswordBox... and while I don't necessarily agree with beating people up for asking questions... he's right.

I think you should do whay sites like Fandango do - open another window (maybe a modal window just during the printing) that is formatted the way you need it to be, and only has the elements you need to print on it (ie: no footer or header). Javascript will be a huge help here.

Here's a great free modal window script: http://www.scriptiny.com/2011/03/javascript-modal-windows/

I happen to like TinyBox2, but of course you can also look at what JQuery has to offer. I would build the print page dynamically with Javascript and just pass it to TinyBox 2. Have it kick off your window.print() on load, and kill then kill the modal window after print. It should happen fairly quickly, and not interrupt your user's workflow too badly.

Hope I was able to help you out.
- Pete

This just isn't enough. You need to post what you've tried, what your stuck on. No one here is just going to write your app for you. Sorry.

Ok,
Here's a function that I use to get the filename from it's complete path.


Public Function GetFilenameFromPath(ByVal filePath As String, Optional ByVal errMsg As String = "") As String

Dim filePathParts() As String

If filePath.Trim = "" Then
errMsg = "Error: No file path provided."
Return ""
End If

Try
filePathParts = Split(filePath, "\")
Return filePathParts(filePathParts.Length - 1)
Catch ex As Exception
errMsg = ex.Message
Return ""
End Try

End Function


About the odd spacing in your table: You can use <table border="0" cellpadding="0" cellspacing="0"> if your still getting odd spacing in your table, then there's something wrong with the html you are generating, or the elements in your cell have padding or margins that need to be set to 0px with css.

Also, if this is only happening at the last row, then maybe you're creating one last table row with empty cells. This would be my guess.

Oh - and that Or will seem to work correctly if you always have an equal number of files in both objects. But one day you won't... and there will probably be some odd results. You should really make that bit of code more robust.

Hope this helps,
- Pete

Yeah... You really need to be more specific. I can't tell what your trying to do either. What does "only the particular set" mean?

Awesome. Thanks man!

- Pete

I knew there was a better way. Thanks for pointing that out. I'll keep that in mind the next time I need to do something like this.

Nice! Glad I could help.

If my assistance has let to the resolution of your issue (and it appears that it has), then please feel free to click the "accept solution" button.

Thanks,
- Pete

If that doesn't work, what you need to to is separate and encapsulate every step of the conversation, and set stops in visual studio. Then as your program runs and stops here and there, look closely at the variable / object values and make sure everything that arrives at the other end is exactly what you expect.

I would take the encryption out of the picture again - especially since you know it works already. If you can test it in a quick test app, and encode and decode some text, then you're probably fine there. So:

I would place a stop after you place your text into a string, and then look at the string. write down how many characters long it is. then another stop after you convert it to a byte array. Write down how many bytes it is... if it's a small enough byte array, mouse over it in the ide and record the values of the bytes. When it arrives at the server, place a stop after it's added to a byte array there, and compare that byte array to the one on the client side. Are they the same length? Do they have identical values? Convert it to a string, and compare the string to the one in the client. Are they the same length? Are they identical? If you still have trouble after making the change I just suggested, I think you'll find that they won't be.

Well, the first thing I see is that in the top of sendRequest() you're still encoding for AscII.

"Dim outStream As Byte() = Encoding.ASCII.GetBytes(TripleDES.EncryptString(InXML))"

So, your sending an ascII encoded string and trying to convert it to unicode at the other end. This could be your problem...

I completely agree. I didn't say that you SHOULD do it, just that you can. And just because I can't imagine why you would want to do such a thing, that doesn't mean that someone else doesn't have an awesome idea, and is in the process of amazing us all.

Besides that, I did add above that you wouldn't do that with server side code, that you would instead do it with javascript. I even posted a link to an example.

This guy just needs to lean about all this, and come to understand what to use for what, and when. So why not give him some real information?

you would do that with javascript, not server side code. You can find a possible solution here:

http://stackoverflow.com/questions/819416/adjust-width-height-of-iframe-to-fit-with-content-in-it

For example, on this page you will find 6 sample projects you can download.

http://www.aforgenet.com/framework/samples/image_processing.html

Have you had a look at AForge's website yet? I only had a quick look, but from what I saw there is a wealth of documentation and example projects for most (if not all) of the functionality the library offers. I think you will find what you need there.

http://www.aforgenet.com/aforge/framework/

Vijay, you really need to give us more information. What exactly is the error you're getting? What do you mean by "No touch deployment method"?

Not knowing any more then this, I would say that the user you're using to install this software doesn't have the rights to do what you want. You may need to be logged in as a user with admin rights, or kick the installer off using an admin user.

Well, I'm glad you found a solution, even if it wasn't the one I provided. I have to say I'm surprised though... I would have thought the security options available in the library I recommended would cover just about any situation.

Yes, some of the code I provided has some other cool possible uses... Glad your getting some use out of it.

- Pete

You know, when I need to add items to the task scheduler, I use this free library. It works great. You can add items to the scheduler to be run as the logged in user, the system account, or you can specify a user. I've used this in the past, and specified command line parameters while creating task scheduler items on windows 7. Have a look... I think this may be your solution. By the way - codeplex.com appears to be down right now... if the link doesn't work, check again later or tomorrow.

Hope this helps,

- Pete

P.S. Here's a codeproject article about the same library. You'll still need codeplex.com to be up to download anything, but at least you can read about it.

I don't understand what's going wrong. Can you start an application using my code and the scheduler WITHOUT adding your command line?

Wow... lol. Look at that command line. It's hard to make any sense of... but the 1st thing that comes to mind is that you have quotes in it. How exactly are you passing them? That may be causing you a problem.

But just in case that's not it, I'll post the modified module in a few minutes.

- Pete

Did you try putting it all in the application command line? I believe that's the way I set it up. If not, the code can be easily modified to accept a command line... If you haven't tried it, give it a shot ( Ie: "c:\yourApp.exe -commands"). If it doesn't work, let me know and I'll post the modified code.

And yes, it looks for explorer.exe by default, and starts your app as the user that started explorer.exe. You can specify a different application if you like. Use like this:

Launch("c:\yourApp.exe -commands")

Again - if this doesn't work, let me know and I'll modify it to accept a command line for you.

- Pete

Agreed - UDP packets are not guaranteed to reach their destination. You should check out this project. It provides tcp server and client classes that make tcp communication much easier, and automates sending text, files and byte arrays.

You didn't give us enough here to be able to give you an example. I agree with Kenneth though - just rewrite it in vb.net. I think you'll be surprised how much easier it is then you think. If you have questions along the way, I'm sure you'll find lots of people here willing to help.

There are several methods listed and explained in this article. I could ask you which one you wanted to be shown, but in my opinion they're all hacky, and the hackier ones aren't likely to work in all networks. Bryan (your article's author) says: "about 64% (of routers) support hole punching for TCP". Do you really want your app to work only 64% of the time?

The only one worth considering, in my opinion, is relaying.

A relay is a server that sits on the internet somewhere. It's not behind a nat (or has ports forwarded to it through a router). It will accept incoming connections, and relay data between two connected clients. I think you already understand this concept, and have what you need to build a relay if you want to, but you'd rather do something like connection reversal to save yourself the trouble.

Unfortunately I can't, in good conscience, show you how to circumvent people's network security, because contrary to what your article says punching holes IS compromising network security and CAN be used for nefarious purposes. It seems like you're interested in building a p2p app, but even uTorrent doesn't do "Hole Punching". uTorrent simply refuses to allow you to download anything unless you configure your router and forward port 22490 to the machine running uTorrent.

It's never a good idea to circumvent people's network security. It won't always work, and your app (and you) will get a bad reputation. Instead, require people to configure their network if they want to use your app. Offer help and guidance. That's the way the pros do it, anyway.

I suggest you take the same approach. Good luck.

- Pete

I'm sorry... I don't understand what you're asking. Of course you can create a socket using a local ip address... and you can connect to a remote ip address also... combination? If you want to do both, then do both. Listen on an ip / port in one thread, and connect to a remote machine on another.

Again, rather then code all this yourself, you'd be better off using the classes I've made available here ob CP. Good luck... and if this was your answer, please mark it as your solution.

- Pete

Why? I thought my much simpler solution might be of some help / interest to someone else who stumbles across this question, and doesn't want to use a custom form... I know I wouldn't want to.

Glad I could help. Sometimes a fresh perspective from someone who's not so invested in the project helps out a lot. If you consider my answer your solution, please click the green button...

- Pete

Np. Glad I could help.

Try running it in a background thread. I ran it in the UI thread when I tested it, but I have a fairly fast machine...

Well, how long did you wait? If you're searching your whole hard drive, it may just be taking longer then you would like. The natural solution to that is to begin your string searching right away... for instance, instead of:


filesList.AddRange(Directory.GetFiles(theFolder))


create a new list to contain only the files in that folder, and hand them off to your string search function.

Also, try running this again, and when you seem to have your deadlock, wait a while. Let's see if it's just taking a while to get through your folders.