C# Discussion Boards - CodeProject

LongRange.Shooter23-Mar-06 4:10

23-Mar-06 4:10

leppie,

Sorry, I missed a rather significant part to the problem. The error I'm getting is that my dll itself is not found by MSI. The packager copies the RegisterComponent.dll file into the package, but when the installer runs it reports that it cannot find RegisterComponent.dll or one of its' dependancies.

The FILEPATH keyword is a part of the /r option of gacutil so since it is not an actual variable, the % signs are not needed.

So bottom line is that the dll is never getting run. My latest try : strong-naming the dll : did not help me either and I'm totally puzzled by this! I've written several custom installers and I've never had this problem!

But I've also noticed that when I installed Google Web Accelerator it never was able to cache anything on my machine and always reported 0.0 time saved. (while on my home machine that I control, it began working with my first page) So now I'm wondering if I have a weird security issue on this machine that is preventing the installer from writing to disk???!!!

I am at a loss right now.

Language Problem

snouto22-Mar-06 10:21

snouto

22-Mar-06 10:21

Hello everybody.
iam currently using an application that reads text to speech from a rich text box but what i want is the following:

RTL languages are not supported for reading i just need to know how can i differentiate between the english line of string from other languages ?how can i do that!!!
Any one has solution please don't hesitate to help me
Thanks everybody.

Human knowledge belongs to the world.

Re: Language Problem

leppie22-Mar-06 19:57

leppie

22-Mar-06 19:57

Control.RightToLeft i would assume. But that would cover the whole TextBox/Control, not sure about lines...

xacc.ide-0.1.3.2

client application

haseeb_saeed22-Mar-06 9:35

haseeb_saeed

22-Mar-06 9:35

hello every body... i am interested in building up an ftp client but the problem is that i don't know how to connect to an ftp client and know which files are available for download and then how to download that file...
please provide help, ie a piece of code and a bit explanation and also provide with links from where i can get help

haseeb

Re: client application

Ed.Poore22-Mar-06 10:25

Ed.Poore

22-Mar-06 10:25

Do a search in the articles here for ftp and limit it to c# / .net

Ed

Re: client application

snouto22-Mar-06 10:29

snouto

22-Mar-06 10:29

hello my friend .
All you have to do is to connect to the ftp server using its ip address and the common port of any ftp server which is 21 by the following piece of code

<br />
byte[] readbytes = new byte[1024];<br />
IpEndPoint ftpEndpoint = new IpEndPoint(IpAddress.Parse("Ftp server ip address to parse"),(Int32)21/*common ftp port */);<br />
TcpClient currentftpclient = new TcpClient();<br />
currentftpclient.connect(ftpendpoint);<br />
currentftpclient.BeginRead(readbytes , 0 , readbytes.Length,null);<br />

From that code you are able to connect to the given ftp server and begin asynchronous reading and writing to that ftp server then what you all have to do is :

to pass to the ftp server normal ftp client commands that deals with file structures and enumerations.
Like Dir
get
put
and quit
and each time the ftp server will respond to your client with specific response you have to parse that response to know the actual response of the ftp server for example

in dir command
to list all current files in the current folders
the ftp server will send you all files in binary with all of their attribbutes.Then you will have to parse these binary data to its actual ASCII values and you are done.

You can google for Ftp Client commands .
And you will get the answer there

Thank you i hope it may help You.

Human knowledge belongs to the world.

Transprency image on Pocket PC

bouli22-Mar-06 9:34

bouli

22-Mar-06 9:34

Hello,

I'm trying to use transparency colors on images with .NET CF 2.0. I am using the SetColorKey method of the ImageAttributes with the Color.Magenta as mask. On the .NET Framework, it works fine, the mask is applied, but on the .NET CF, I can see that the mask color has been replaced by the black color. So, how can I handle transparency colors on the .NET CF platform??? Can somebody help me?

Thanks for the help.

Best regards.

Fred.

There is no spoon.

Using DataRelation for DataBindings backwards?

bobbyn31422-Mar-06 9:31

bobbyn314

22-Mar-06 9:31

Hi,

I hope this is the right board for this (my first post here at codeproject).

I have a DataSet containing three Tables: address, country and project. There are two DataRelations defined. One address points to a country and some projects point to one address. I trying my luck with a lot of data binding, so I use some label controls to show the entries of one address.

For example:
myLabelAddressName.DataBindings.Add("Text", myDataSet.DefaultViewManager, "address.name");

To show all related projects in a listbox I use:

myListboxProjects.DataSource = myDataSet.DefaultViewManager;<br />
myListboxProjects.DisplayMember = "address.RelationAddressToProjects.projectnumber";

To control the actual data row to be displayed, I use a CurrencyManager:

CurrencyManager curr = (CurrencyManager) this.BindingContext[myDataSet.DefaultDisplayManager, "address"];<br />
curr.Position++;

This works quite fine so far, but now comes the problem. What do I do, if I want the correct country for every address being display (data bound) to another label? Remember, in this case the country table is the master and the address is the child.

I would think of something like this:

myLabelAddressCountry.DataBindings.Add("Text", myDataSet.DefaultViewManager, "address.RelationAddressToCountries.countryname");

The problem simply is, that I cannot create the relation RelationAddressToCountries, since there is not an address to every country, which would be mandatory. Can I somehow use the relation from countries to addresses backward?

Greetings,
Bob

Designer Question

Marc Clifton22-Mar-06 9:28

Marc Clifton

22-Mar-06 9:28

I have binding source that I created in the main form, since it has a grid on it. Now I want to use that same binding source to edit properties on a dialog that can be popped up.

How do I tell the designer to use that binding source? Do I put the binding source somewhere public/static? Is the designer smart enough to it out if I set a binding source field in the dialog (I'm about to try that).

In general, using the designer, how do I get one form to see stuff in another form?

I can't believe I'm asking such a basic question, because obviously I know how to do this in the code, but using the designer, I'm clueless. (Why I'm using the designer is another matter, let's just say I'm in a masochistic mood today).

[edit]In fact, I can't even figure out how the DataBindings thingy in the properties page even works in the designer[/edit].

Marc

Pensieve
Functional Entanglement vs. Code Entanglement
Static Classes Make For Rigid Architectures

Some people believe what the bible says. Literally. At least [with Wikipedia] you have the chance to correct the wiki -- Jörgen Sigvardsson

-- modified at 15:31 Wednesday 22nd March, 2006

How Do We Create a Checker Game?

jeff1922-Mar-06 9:14

jeff19

22-Mar-06 9:14

Can anyone direct me as to where to find examples of how to create a strategy game, such as checkers, by using C# in a windows application? I am most interested in how to draw a checker board and checker pieces, and how to allow the user to drag and drop a checker piece. I have been unsuccessful in finding this, so far, and it would be really neat to play with this type of code. Thanks.

jeff19

Re: How Do We Create a Checker Game?

DigitalKing22-Mar-06 18:40

DigitalKing

22-Mar-06 18:40

Here[^] is an excellent example of chess. Look at the source to learn about drawing a board with GDI+ and handling mouse events.

Re: How Do We Create a Checker Game?

Member 156244864-May-22 5:17

Member 15624486

4-May-22 5:17

Does anyone have an updated link for this? I am also trying to create a checkers game using C# with a .Net Framework and this link for the chess setup doesnt seem to work for me. Any help would be greatly appreciated.

Hiding a Tab Control

Franz Klein22-Mar-06 9:11

Franz Klein

22-Mar-06 9:11

I have tried using the following code: TapPage.Hide() to make a tab page invisible but nothing happens it just sits there laughing at me. Cry | :((

The tab page is placed on a Window Form in the Form design area and is not created dynamically.

Does anybody know what I can do to make it invisible?

I am the handsome one in the crowd.

Re: Hiding a Tab Control

jonas_berg22-Mar-06 10:05

jonas_berg

22-Mar-06 10:05

This is another way, "removing" it:

tabControl.TabPages.RemoveByKey("TapPage");

/j

Re: Hiding a Tab Control

Ed.Poore22-Mar-06 10:06

Ed.Poore

22-Mar-06 10:06

I think you have to remove the tab, that's the only way I can remember.

Ed

Progressive vs. Baseline JPEG

SylvesterW22-Mar-06 9:10

SylvesterW

22-Mar-06 9:10

Hi,
I need to distinguish progressive jpeg's from baseline jpeg's.
So far I retrieved all image properties using image.GetPropertyItem, and all properties are the same for these two kinds.
There is also function GetEncoderParameterList, but it can only (at least as far as I know) be used to set encoding properties when you want to save a file.
Do you know maybe how can I use GetEncoderParameterList for my purpose? Or, how can I distinguish these two types of JPEG's by reading and comparing bytes from image file.
Thanks
SW

Re: Progressive vs. Baseline JPEG

DaBears22-Mar-06 11:39

DaBears

22-Mar-06 11:39

Progressive information is held in the JPEG compression header. You need to read in the jpeg file then access the fields by address. There are three single byte address fields (0xC2, 0xC6, 0xCA) that holds progressive information. Generally I think 0xC2 is always set if the jpeg is progressive.

So create a struct that contains the information you want and then read the file into that struct (fread, or the .NET equivlant), and then access the proper field.

Mike

Re: Progressive vs. Baseline JPEG

SylvesterW22-Mar-06 19:45

SylvesterW

22-Mar-06 19:45

Mike,
Thank you for fast response. Could you post a sample code how I could access and retrieve that info using byte address fields (or a link to a website with similar code). I'm a kind of new to image processing and example would help me a lot.

Thank you again,
Sylvester

Re: Progressive vs. Baseline JPEG

DaBears23-Mar-06 5:36

DaBears

23-Mar-06 5:36

Hey Sly,
Here is a link to some code samples to give you an idea on what to do. Don't follow exactly because the addressing doesn't line up, the BITMAPINFO struct doesn't break out the progressive address so you would have mask the information you need out of what it does hold.

http://www.experts-exchange.com/Programming/Q_21769844.html[^]

The last post might be a little better info. Also these snippets are written in C so you would have to translate that to C# .NET. Since I haven't done this type of stuff in .NET I can't tell where to head. Frown | :(

-Mike

Re: Progressive vs. Baseline JPEG

SylvesterW23-Mar-06 11:17

SylvesterW

23-Mar-06 11:17

Mike,
Unfortunately I don't have subscription on experts-exchange, but at least I know what to look for.
Thanks
Sly

Re: Progressive vs. Baseline JPEG

DaBears23-Mar-06 11:30

DaBears

23-Mar-06 11:30

Sly,
You don't need a subscription (I don't) just scroll down far enough and you will see the whole post, you have to get past all the ads, and don't click on the "View Solution" button.

But just in case I am getting lucky:

Based on the info here:
http://www.fastgraph.com/help/jpeg_header_format.html

You can read in the necessary info, similarly to how I demonstrated with the above code (for bitmap).

Firstly, define a struct to store the JPEG header info in:

struct JPEGINFOHEADER
{
unsigned short id ;
unsigned short width ;
unsigned short height ;
unsigned char number_of_component ;
// etc etc
} ;

/**
* Return value:
* 0 - Successful
* -1 - Could not find/open the specified file
* -2 - Specified file is not a valid bitmap file
*/
int LoadJpegHeader( char *filename, JPEGINFOHEADER *jpegInfoHeader )
{
FILE *filePtr ;

filePtr = fopen( filename, "rb" ) ;
if ( filePtr == NULL )
{
return -1 ;
}

fread( JpegInfoHeader, sizeof(JPEGINFOHEADER), 1, filePtr ) ;

fclose( filePtr ) ;
return 0 ;
}

Re: Progressive vs. Baseline JPEG

SylvesterW23-Mar-06 19:13

SylvesterW

23-Mar-06 19:13

Mike,
You are right, when I saw "View solution" I didn't even scroll down the page.
I also found a book which covers that topic very well. The title is:
"Compressed Image File Formats: jpeg, png, gif, xbm, bmp" by John Miano, 1999
It also has a CD with console application (jpegdump) written in c++ extracting all info from jpeg file.
Now, I only need to convert it to c#. Great!!! Smile | :)

Thanks

Sylvester

C# Generating Outlook contacts

Paul Sullivan22-Mar-06 8:57

Paul Sullivan

22-Mar-06 8:57

I have a web app and I would like to create Outlook contacts and assign them to groups in the Outlook address book. I'm using C# and Visual Studio 2005. Can someone help point me in the right direction? Thanks

paul

binding a datagrid to an arraylist

brianmelion22-Mar-06 8:21

brianmelion

22-Mar-06 8:21

Hi,

in a windows form I am trying to populate a datagrid from an arraylist. instead of getting the text value I am getting the length of each string in the array passed to the grid, in this case the number "5"

ArrayList list = new ArrayList();

list.Add("Test1");
list.Add("Test2");

dataGrid1.DataSource = list;

Any ideas?

thanks

brian

How to get User Idle time

engsrini22-Mar-06 7:17

engsrini

22-Mar-06 7:17

Hi all,

I developing a windows application which will have login verification and other stuffs.

I want to lock the application when the user is idle (as like in windows ctrl+alt+del lock) for some time(say 1 hour - it should be confiurable parameter).

how can i do that in c#

I found one event in Application.idle but this event trigger once the UI get painted.

Regards,
Srini

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