Re: DataGridView and DataSet - C# Discussion Boards

half-life10-Mar-09 23:16

10-Mar-09 23:16

HI,

i have a strange problem:

i have a datagrid view bound to a table.
when i edit a cell content i press a button to save this changes like this :

TA_Users.Update(dS_StationManager.T_Users);
dS_StationManager.T_Users.AcceptChanges();

THIS WORKS FINE.
now i've decieded to removw the button so that the changes will be saved without the user pressing the button.

i've tryied copying this two code lines

TA_Users.Update(dS_StationManager.T_Users);
dS_StationManager.T_Users.AcceptChanges();

to diff datagridview events like :
1. dgvUsers_Edit_CellValueChanged
2. dgvUsers_Edit_CellEndEdit

but nothing happens, the database does'nt change

Help Req
THANKS Smile | :)

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Re: DataGridView and DataSet

Expert Coming11-Mar-09 0:03

Expert Coming

11-Mar-09 0:03

Are those events actually tied to the delegate?

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Re: DataGridView and DataSet

half-life11-Mar-09 0:17

half-life

11-Mar-09 0:17

they occuer ( i debuged this )
if that waht u mean Smile | :)

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Re: DataGridView and DataSet

Xmen Real 11-Mar-09 0:06

Xmen Real

11-Mar-09 0:06

copy back to button and check if its still working

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Re: DataGridView and DataSet

half-life11-Mar-09 0:16

half-life

11-Mar-09 0:16

Xmen wrote:
copy back to button and check if its still working

what do u mean??

call the button callback form the event??

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Re: DataGridView and DataSet

Xmen Real 11-Mar-09 0:18

Xmen Real

11-Mar-09 0:18

I mean copy paste that code in a button and test that is it still working. It may possible that you change something and forgot...

Re: DataGridView and DataSet

half-life11-Mar-09 0:21

half-life

11-Mar-09 0:21

yep stiil works
i copied it to the tabpage selectedindex changed event
and it works Frown | :(

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Re: DataGridView and DataSet

Xmen Real 11-Mar-09 3:55

Xmen Real

11-Mar-09 3:55

half-life wrote:
i copied it to the tabpage selectedindex changed eventand it works

hehe nice place xD

well try this one

void UpdateDataBase(object sender, EventArgs e)
{
    // paste here that code
}

and in CellValueChanged

this.Invoke(new EventHandler(UpdateDataBase));

Re: DataGridView and DataSet

jaypatel51211-Mar-09 2:25

jaypatel512

11-Mar-09 2:25

Dont you think you need to try the event dgvUsers_SelectedIndexChanged.

I have tried that in my code. It was working.
Try to update the database after you leave that row . .

Re: DataGridView and DataSet

half-life11-Mar-09 2:59

half-life

11-Mar-09 2:59

thanks

this was the first thing i thought about doing
but decided not to update each time i leave a row

but thanks anyway Smile | :)

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Problems with Webcam Capture

maerki9010-Mar-09 23:07

maerki90

10-Mar-09 23:07

Hi,
I've some problems with my Webcam_Capture-Class. My webcam can capture up to 90 frames per second, but in my program i've just 9-11 fps. The Class' name is Webcam_Capture and i've downloaded it from codeproject.
In the class there's a timer so I can set the "TimeToCapture_milliseconds". I can also set the Frames. I want about 20 fps, but that's impossible. The processor time is about 40%, so that can't be the problem.

Do you have any idea to solve this problem?

Thanks and greetings
shainsen

Re: Problems with Webcam Capture

Mustafa Ismail Mustafa11-Mar-09 0:09

Mustafa Ismail Mustafa

11-Mar-09 0:09

What do you mean impossible? The library won't accept such a value or is that too strenuous for your system?

Can you reference the article from which you got the class?

Re: Problems with Webcam Capture

maerki9011-Mar-09 0:43

maerki90

11-Mar-09 0:43

Hmm it was not from codeproject but from here:
http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=1339&lngWId=10[^]
I think it's because of the library! I've tried only to load a webcam image, but I just had 10 fps in my form. It's not to strenuous for my system, i've only 40% processor time needed by the program.

Greetings shainsen

How to check/control the url which WebBrowser's will navigate it (WebBrowse in Windows App.)

Member 465172910-Mar-09 22:58

Member 4651729

10-Mar-09 22:58

Hi all,

I'm using (trying to use) webBrowser control in windows application.

when a user comes default web site is www.abc.com. User can select some transaction and they will be able to what they want.

What I want to do is, when user click ads which are on the website I should not navigate webBrowser, I should not allow to do that.

So I have done something like;

private void webBrowser_Navigating(object sender, WebBrowserNavigatingEventArgs e)
        {
            // check the URL if allowed or not.

            Uri u = webBrowser.Url;
            string ap = u.AbsoluteUri;

            for (int i = 0; i < App.IzinliURL.Length; i++)
            {
                if (ap.IndexOf(App.IzinliURL[i]) == -1) // if it is not allowed
                {
                    webBrowser.Stop();

                    break;
                }
            }

            // new url which I'd like to set but it does not work.
            Uri newUri = new Uri("http://www.google.com.tr");
            webBrowser.Url = newUri;
            webBrowser.Navigate(newUri);
        }

What I have to do.

Many thanks.

Re: How to check/control the url which WebBrowser's will navigate it (WebBrowse in Windows App.)

Expert Coming11-Mar-09 0:01

Expert Coming

11-Mar-09 0:01

You need to say e.Cancel = true somewhere.

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Getting image compression/codec information?

Matjaz-xyz10-Mar-09 22:19

Matjaz-xyz

10-Mar-09 22:19

Hi.

I'm looking on how to get the information from an image.
The information i need is its codec or compression.

The reason why i need this is because, i have a large quantity of .TIF files. But some were not converted right and are color TIFs (IrFan View says : "Old JPEG (in TIFF)"). I need to get these files and convert them to the real .JPG.

So, i want to get the codec information from a file and compare it to a string. I'd use the "for" sentence to go through the whole list of files.

Summary (a scratch code):

for(int i = 0; i<files.count;i++)>
get codec from files[i]
if codec == old jpeg
then move the file to a folder

Any idea on how to get this information?

Thanks in advance!

Regards,
Matjaž

Bypass the Open/Save dialogue box generated by webBrowswer.Navigate

Goobashi10-Mar-09 22:02

Goobashi

10-Mar-09 22:02

Hello!
In an attempt to streamline downloading from a FTP share I'm making a small front end that retrieves files based off of names. The problem I'm experiencing stems from the method I'm using to download the files. Without going into extraordinary detail, the front end is experimenting with querying the FTP to retrieve the file rather than directly downloading it. As a basic example, directing the webBrowser to a URL generated by the FTP that allows the user to download the file. However the problem I'm running into is in the simple call;

webBrowswer1.Navigate(ftpDownloadUrl);

As this is called it opens up the Open / Save dialogue box prompting the user for where they would like to store the file. I'm trying to streamline the process and have the program save it to a predefined location (even start up path). So finally to my question!

Is it possible to have it automatically accept the save location or if not have the program record where the file was stored to move it to a specified directory (assuming permissions)? Thanks in advance!

Colin

Re: Bypass the Open/Save dialogue box generated by webBrowswer.Navigate

Simon P Stevens10-Mar-09 23:04

Simon P Stevens

10-Mar-09 23:04

Take a look at the FtpWebRequest[^] class. You should be able to download a file from the ftp server, and then write the data stream out to where ever you want.

Simon

Re: Bypass the Open/Save dialogue box generated by webBrowswer.Navigate

Goobashi10-Mar-09 23:11

Goobashi

10-Mar-09 23:11

Thank you for the reply but I'm trying to get this to work explicitly using the webBrowser technique. Any other suggestions?

Re: Bypass the Open/Save dialogue box generated by webBrowswer.Navigate

Goobashi10-Mar-09 23:13

Goobashi

10-Mar-09 23:13

I may be adding confusion by including the information about the FTP. My final goal is to have the application download files from a URL without having to ask permission from the user for each file.

Thanks again,
Colin

Re: Bypass the Open/Save dialogue box generated by webBrowswer.Navigate

Simon P Stevens10-Mar-09 23:22

Simon P Stevens

10-Mar-09 23:22

No other suggestions. Sorry. The WebBrowser is exactly that, it's an embedded web browser, your trying to use if for something it's not really designed for. When you tell it to navigate to the URL, it will behave exactly like a web browser would if the user navigated to the URL.

If your not just looking at ftp, there's the HttpWebRequest[^] class, and the abstract base WebRequest[^]. You would be able to use them to handle any kind of download url you need to.

(There's a bunch of others too like FileWebRequest and PackWebRequest for downloading from different kinds of web resources)

Simon

Adding xml code to another xml file [modified]

ipstefan10-Mar-09 22:01

ipstefan

10-Mar-09 22:01

I do this:
<pre>XDocument xmlDoc = new XDocument();
if (indice == 1)
{
xmlDoc =
new XDocument(
new XDeclaration("1.0", Encoding.UTF8.HeaderName, String.Empty),
new XComment("Xml Document"),
new XElement("alinieri",
new XElement("align",
new XAttribute("id",indice),
new XElement("edtlr-def",entry_node[idx]),
new XElement("wnrom-synset", wn_synset)
)
)
);
xmlDoc.Save("alinieri.xml");
}
</pre>
my entry_node[idx] is a string containing xml code,same is wn_synset.

My problem is that in the saved xml it shows this(just the beginning):

<alinieri>
<align id="1">
<edtlr-def><definition>
<SpecDef>(Uneori cu determinări care indică sursa, provenienţa)</SpecDef>

instead of
<definition><specdef>(Uneori cu determinări care indică sursa, provenienţa)</specdef>

as it is in the one of the strings.
And the & lt ; & gt ; were supposed to be < >. What should I do? </definition></edtlr-def></align></alinieri>

<div class="ForumMod">modified on Wednesday, March 11, 2009 4:08 AM</div>

write dll component

behzadcp10-Mar-09 21:12

behzadcp

10-Mar-09 21:12

hi
how to write a dll component in C#.net?
how to start?
how to write?
howwwwwwww.......?
if you have an article or reference or book please introduce
Thanks

Re: write dll component

stancrm10-Mar-09 21:14

stancrm

10-Mar-09 21:14

Create a new project "Dynamic Link Library" in Visual Studio, write your code, then compile it.. Smile | :)

Re: write dll component

behzadcp10-Mar-09 21:51

behzadcp

10-Mar-09 21:51

thanks for help
your purpose is WindowsFormsControlLibrary?
and how can i inherit from a control?
how can i add an event?

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