Comments by velvet7 (Top 84 by date)

By the way, I was thinking about this lately:
"if A-B is different than B-A, that'd be more interesting".
Why would it be more interesting?
As I understood Dijkstra's algorithm it would work for this one perfectly as well. (and I tried it as well, and there weren't any problems)
Am I missing something here?

Exactly what I was looking for, thank you. :)

This is exactly what I tried to do. The problem comes when I try to draw on the boundary of the wall. So imagine it like this:
*
---***-
| * |
| |
-------

Where the * is the bullet texture. Basically it draws "in the air", which I want to avoid.

I said that as an example to understand the concept better. The competition I am preparing for wrote the eaxct same thing. A librarian wants to know what are the minimum steps (swaps) to put them in order. That is the ONLY and ONE thing he cares about, nothing else. So I think this may help me, I'll check it out right away, thanks, Daniele.

Please look above my comment.
By the way, you are right. But that's not the case. :)

Quicksort: 9 swaps

Right. So the point of my application is not to be better.
Look at it this way. You have a friend, a librarian. He asked you to find a way how he could sort his books numbered from 1 to 10. (above) You have to tell him how many steps he has to do to sort them. :)

A swap is a step, yes.

Uhm, yeah so I have to give the minimum number of steps I have to do to sort it.
Array.sort doesn't return that to me. (and I think it does it in the fastest way, not the most efficient, im not sure though)

Maybe I don't know what a real knowledge is, I am not old enough yet, I admit. I am just a young boy who tries to learn new things. (I guess I don't have to say that you didn't help, that's the reason I gave you 2 points)

Thank you for your time. :)

So... You are trying to say, that let's say I can't add up 2 numbers then I have to figure it out myself? Then what's the point of schools? They teach you how to use the numbers, not the solution, right?
For example, how did you start programming? You just KNEW how to do it? You read books about it maybe, but still, you had that book to help you out and get you started, the exact same thing I am asking for.
I would like to find out where to start when I get a problem like this (not exactly this), not the solution.

I hope you understand me. Maybe I am wrong, in that case, I am sorry for wasting your time.

Thanks, anyways :-)

Also, I was trying to get a HINT, not the answer. I stated that clearly in my quesiton. I know I have to find out the answer myself to get somewhere.

I am sorry, I think you misunderstood me... I am practicing for this upcoming competition. The year before last this was the problem, so I was thinking of trying to solve it, just to be prepared. I would never ever cheat... I solved all of them, except this one. This one is giving me a headache.

Just the exe. But anyways, I figured out another way, the reader device sends the data as plain text(sends data like a normal keyboard), so I just read with the lowlevelkeyboard api, and prevent it from writing by returning 1 in the HookCallBack method, so the cardreader won't write anything but I am still able the read out what it wants to write.

Alright, but if I send to the device that it should write bytes to the card, then it will write the start character no matter what. It's nothing something I can control, as far as I know. But shouldn't the decoder decode it to remove the start and end characters? Maybe I screw up something, because when I try to read from the card it doesn't read the real informations, it reads just 0's, so I think the data is encoded, but I don't want it to be encoded.

I don't really understand you, the start character and the end character would stay there.

Yeah, but the point of this whole thing is to directly write this data to an application on another computer. So this '%' and '?' would screw the whole thing up.

I checked the test program too, but same thing. Though I tried with numeric values, and they were just working fine. But when I tried to read the card the text appeared like this:%123? So how could I write on the card without the start and the end characters? I mean, I don't want the % and ? character to appear after reading.

Updated.

I don't think so, because I tried the Peek() and Read() methods, but they just block it too. And also, as I said when I send a wrong request it works, so it reads the incoming data and it forwards it to the browser.

Thank you!

Please check out my comment above.

Yes. So the points would be:(0,0),(0,1),(0,2)

Thanks for the answer, unfortunately it doesn't work:(

Looks like you misunderstood me. I didn't want to be rude. I understood what your problem is. But I still couldn't find out why I can't see a Frame in a Div. Maybe somewhere else with a better start I will be able to do that. (I think the problem is in me.) Thanks for the advices and see you in the future, I hope next time I won't be rude (if there will be next time)!

Javascript? I don't think so. ASP.NET? Just look at the title, and search for WatiN: "WatiN started in December 2005 to make a similar kind of Web Application Testing possible for the .Net languages". So yes, it is ASP.NET (but I tag it for you). Anyway, thanks for the comments, I could solved it myself on another way, but I still can't understand why I can't see a Frame in a Div (if you don't understand what I am talking about then please download WatiN and do the same as I did above, and you will understand hopefully).
PS: Thanks for the 1 rate (whoever did that) :)

Then this isn't what I am looking for I am afraid :( It's too easy for them.

Thank you for the answer. And what programs could get around this kind of security?

It is 3rd party app.

There's nothing wrong with that imo, I try to click on that DIV with the help of WatiN which is .NET :)

Nice answer, thank you, that is what I needed! 5 points!

And then how can I remove the image from the screen without erasing the snake?

Good job!

No, I am talking about uploading the whole page to FTP, and the downloading it from the FTP, but how would you send the request form the client side if your don't know the exact link? And because of ajax you won't get the exact link.

For example: how would you send the request to the server to reply to this comment? There's no link, or anything like that.

Well, yes, I have tried to save the whole page, and upload it, but when saving sites which uses ajax it simply goes wrong, because you can't navigate to a site.

Thanks :)

Actually, I haven't think about it already, maybe you are right. I will check it tomorrow (because the computer is far away from me). First when I started my c# application it threw an error, and I thought it was the framework, but then no. Well, tomorrow I check that error code again.
Thanks, question answered.

Please explain that error more deatailed.

While I am not fed up of them I try to help them out, anyway you are right, maybe this isn't the best way to do that.

Don't be so evil:)

There are about a million records, and a space can't be a datetime, so I don't think.

To answer to the question you asked from Abhinav: I would like to make the read time a bit shorter this way, because now it takes ~3 second (on my computer, and this will be used on a slower one!). So to check it, I have to read all cells.

"I try to read out from a GDB".
I just need an SQL command.
Anyway, to be exact the field is set to "Not null".

Image above.

Actually the problem is this is not my database. It is generated by another program.
And the database doesn't allow NULL.

Thanks for sharing your code with us.

Well, I couldn't get exactly what do you want, but check this:
dataGridView2.SelectedRows[index].Cells["cellname"].Value

This will get the selected cell's value.

textbox.Visible = false, and string s = textbox.Text. It gives the correct result for me.

PS.: Why are you using hidden textboxes if they will never appear? Use a simple integer.

But then how is it possible that I can copy with ctrl+c, but I can't with File.Copy? What is the difference between this two thing? I thought they are the same.

Thank you Patrick, it works. Now how should I give you the points?:)

Well, I have downloaded this one, and installed. Now there's another problem:
source code:
string path = "provider=sibprovider;location=D:\\test.GDB; user id=SYSDBA;password=masterkey";
OleDbConnection con = new OleDbConnection(path);
con.Open();
Now when I debug it throws an exception:
OleDbException: "unavailable database"

In both.

"if you show us that what exception was caught when something goes wrong.... then we can help definitely....."
It doesn't even throw exception.

It doesn't "spawn" the picturebox. But in step-by-step mode it works.

Yes. But I still can't get it to work.

The full exception:Cross-thread operation not valid: Control 'Form1' accessed from a thread other than the thread it was created on.

Maybe it helps.

1) MethodInvoker is in .Net, that isn't mine 2) Yes, it is in WinForms 3) I write it in Form1 : Form class

Well, maybe if i call it less frequently solves the problem, but I have to call it 50 times a seco

Updated again, I hope it's clear now what I try to do.

Edited above.

Thanks for the long, and understandable answer, but unfortunately it still doesn't work when I try to call Form1.Invoke from class called Players. It says that an object reference is requeried for the non-static field, so yes, and that is clear.

Yes.

Worked. Thanks!

Well, I'm still interested in that thing, so if you can find out a solution for it that would be nice.

Yea, thanks. Worked pretty well, I just had to go to /man.cgi?redirect=GBstart.htm%3Fsec%3D30&failure=fail.htm&type=reboot
(which Fiddler2 write) But I still would like to know how to click on a button:) But that was the main question!

Thanks for the answer! Tried myReq.Method = "REBOOT" (this is what they write), but it gives an error:The remote server returned an error: (501) Not Implemented.

Hmm :doh: I don't know, it still gives the same result for me. Can you tell me where should I search the problem?

Sorry, I can't understand you. It is NOT a homework. But tell you what, don't help me, thanks, I have nothing to lose. Honestly...

PS: It isn't a homework assignment neither, and it still doesn't work after editing a few things in it.

Thanks for the answer! Yes, that's true, but I'm not asking you to solve it, just help me in solving it.

Thanks for the answer, yes, I realised the split thing after I wrote here the code, and by the way, I make this program to teach myself, so my professor isn't "monitor" this site, because I don't even have one.

Thanks for the answer. I write it down again. I have 9 sudoku tables. They are behind each other. You have to solve all the 9 sudoku tables, and then if you are done, you have to flip or rotate ONE (of the 9) sudoku table, and then check it its correct. So let's see an example:
1. Sudoku table: [0,0] is 1
2. Sudoku table: [0,0] is 1
(and so on... to 9, then check it again with [0,1] and so on)
So thats wrong, because there are two of 1. Then rotate, or flip another sudoku table again, and do it while it isn't correct.
I hope you could understand me:)

I tried your code, and it works perfectly for me.

So, I tried it on my friends computer, and it also connects there to server, but it doesn't connect to server2. With the same exception.

192.168.1.4 (which is my brothers lan address)