Convert and handle video files - .NET (Core and Framework) Discussion Boards

analytiks27-Jul-06 23:51

27-Jul-06 23:51

Is there a way to detect the plugging and un-plugging of a device on a Serial Port?

The requirement is such that during application runtime, if a device is connected to the serial port, the application should be able to detect the device.

Help needed PLEASE.

Re: Serial Port Communication

Mike Dimmick28-Jul-06 3:32

Mike Dimmick

28-Jul-06 3:32

Normally if a device is ready to operate, it asserts the DSR (Data Set Ready) line. You can check for this in code using the GetCommModemStatus API (for Win32). Polling is generally considered a bad idea - you can wait for a change in these flags to occur with the WaitCommEvent API.

From .NET Framework 2.0, these map to the DsrHolding property and PinChanged event of the SerialPort class.

Stability. What an interesting concept. -- Chris Maunder

Edit a column in a datagrid without using an edit column in C#

Mons211027-Jul-06 5:07

Mons2110

27-Jul-06 5:07

Hi,

I was hoping if someone could help me with this problem. I want to edit
datagrid entries without using a linkbutton column for edit and update.
maybe we could do this using javascript. But I dont know how?

On an 'edit settings' button click outside the datagrid, the cells in the datagrid should change into dropdownlists and textboxes with earlier values maintained.

Thanks!

Monisha

windows service and mapped drives [modified]

Captain Willard27-Jul-06 2:09

Captain Willard

27-Jul-06 2:09

Hi, i'm trying to get a service to create a process text file on a 2nd machine (xp) from a w2003k server. however it fails in a grand way when it tries to create a streamwriter on the xp box! i understand it may be to do with the account etc, but i've set the log on tab for the serviec to be admin but it still fails, i've tried 'p:\thisfolder' as well as '\\thismachine\thisfolder'.
Can anyone point me in the right direction as it's been days of hell on this one.
Thanks
Captain Willard and crew

-- modified at 10:02 Thursday 27th July, 2006

Re: windows service and mapped drives

Mike Dimmick28-Jul-06 3:37

Mike Dimmick

28-Jul-06 3:37

Mapped drives are stored in the user's profile, and services don't load the user's profile, instead using the default user profile. I'd use a UNC path. We found when doing scheduled backups remotely using NTBackup, scheduled with the Scheduled Tasks feature, for a mapped drive to work successfully, the user needed to be logged in. Switching to a UNC path meant that the user no longer needed to be logged in.

Network shares should be accessible by a service as long as either a) you use a domain account which has permission to write to the folder or b) the user account name and password on the client match with the same account name's password on the server.

You should check the NTFS permissions on the share as well as the share's permissions. Both need to allow the write for it to work. I normally just leave share permissions at Everyone/Full Control and rely on the NTFS permissions.

Stability. What an interesting concept. -- Chris Maunder

Re: windows service and mapped drives

Captain Willard31-Jul-06 1:23

Captain Willard

31-Jul-06 1:23

Cheers, i managed to get it sorted, i thought i'd had the right permissions set but seemingly didn't.
Dan.

Never get off the boat!

to change managed assembly attribute programmatically [modified]

Mushtaque Nizamani26-Jul-06 19:13

Mushtaque Nizamani

26-Jul-06 19:13

Is there a way to change managed assembly atrtibute programmatically? for example version number of a file.

warm Regards
Mush

-- modified at 1:19 Thursday 27th July, 2006

Convert and handle video files

edonistart26-Jul-06 3:47

edonistart

26-Jul-06 3:47

Hi everyone,
I have to convert video files on the fly and I should export some video frame as a jpg (and get video props - duration, etc...). This should be done in an asp.net page.

I've seen ffmpeg does the first work in an excellent way, but I have to execute the external exe... The problem that in hosted environment it's not possible...
Do you know if ther's a project that have already ported ffmpeg to .NET? Or if there's a wrapper for interfacing with ffmpeg dll? I've searched on the net but I found nothing...

For the second task (export some jpg and get info) in php there's ffmpeg-php ... Is there an equivalent project for asp.net?

These are the solutions I've found... If someone knows a different solution I'd appreciate it very very much! Wink | ;-)

thanks in advance...

SqlServer evaluation period expired

lehya26-Jul-06 2:25

lehya

26-Jul-06 2:25

hello friends..
I had Ms Sql Server 2000 installed on Xp machine..suddenly when i observed server's icon on taskbar.it stopped working..when i tried to start it..it couldnt..log file says server evaluation period expired..Is there any way to make it work..or start Sql server on my machine now...
plz help

Re: SqlServer evaluation period expired

Dan Neely26-Jul-06 2:42

Dan Neely

26-Jul-06 2:42

SPend money to replace your timerware demo with a normal license.

SqlServer evaluation period expired

Hesbon Ongira27-Jul-06 22:37

Hesbon Ongira

27-Jul-06 22:37

one way to make it work is by unistalling it then cleaning up your registry manually.then reinstall it. however, like Dan said, you can spend money and buy the license.

Regards,
Hesbon.

Call to Web Service using HTTP GET does NOT work

Andrew Mercer26-Jul-06 0:49

Andrew Mercer

26-Jul-06 0:49

Hi,

I hope this is the correct newsgroup for this question.

I am creating a test web service that I wish to extend.

The example I am working from suggests that Web Services can be called direct using HTTP GET, eg:

http://server/webServiceName.asmx/functionName?parameter=parameterValue

However when I try this I get the following error:

Request format is unrecognized for URL unexpectedly ending in '/functionName'.

It works fine if I first call the service, click on the public method and then invoke.

I am using IIS5.1, VisualStudio2005 and .NET 2.0

What am I doing wrong? (I even tried altering the IIS settings without success)

Thanks in advance

Andrew

Re: Call to Web Service using HTTP GET does NOT work

mr_lasseter26-Jul-06 12:50

mr_lasseter

26-Jul-06 12:50

Have you tried this below?

http://server/webServiceName.asmx?parameter=parameterValue

Mike Lasseter

Re: Call to Web Service using HTTP GET does NOT work

Andrew Mercer26-Jul-06 22:22

Andrew Mercer

26-Jul-06 22:22

Hi,

Yes, however this acts as though I have missed off the

?parameter=parameterValue section.

ie: It returns the usual page listing all the public methods for the web service as though I had used the basic URL: http://server/webServiceName.asmx

Any other suggestions/options?

Thanks Andrew

Unmanaged C++, windows service

yoti1126-Jul-06 0:36

yoti11

26-Jul-06 0:36

Hello,
Writing windows service in c++.Net 2005 it’s clear, but I’ve problems when I
Want to write a windows service in C++.Net 2005 but with unmanaged code.

I’ll appreciate if anyone can give me a clue/hint.

Thanks

Re: Unmanaged C++, windows service

Mike Dimmick26-Jul-06 2:55

Mike Dimmick

26-Jul-06 2:55

The subject is really too involved to go into in a forum post. The best source I know of is 'Programming Server-Side Applications for Windows' by Jeffrey Richter and Jason D. Clark (Microsoft Press), but unfortunately I believe it's out of print.

You might be able to get a copy from Amazon Marketplace[^].

Stability. What an interesting concept. -- Chris Maunder

anti-aliasing images in GDI+?

kusanagi200025-Jul-06 22:11

kusanagi2000

25-Jul-06 22:11

Hi all

Is it possible to anti-alias the edges of a rotated image using GDI+/.Net 2.0? I am rendering an image onto another and because it's rotated it'll have jaggies. I know that you can use InterpolationModes and SmoothingModes but it doesn't seem to affect the edges of the image against the background image.

Any pointers?
Thanks

Re: anti-aliasing images in GDI+?

Robert Rohde26-Jul-06 3:19

Robert Rohde

26-Jul-06 3:19

I don't think so. But you could adjust the alpha values of 'all pixels at the edges' prior to call DrawImage. Probably this helps a bit...

Re: anti-aliasing images in GDI+?

kusanagi200026-Jul-06 14:14

kusanagi2000

26-Jul-06 14:14

Thanks mate. I forgot about trying that. I'm using PNG images so it should work.

Cheers!

DataGridView selection on right click

~~~Johnny~~~25-Jul-06 6:55

~~~Johnny~~~

25-Jul-06 6:55

I have a DataGridView object and I added a ContextMenuStrip control to the DataGridView.ContextMenu. This works well, if I right-click the datagrid view I get the context menu I wanted. The problem is, I would like to, just before the context menu appears perform a left click to also select the cell or row under the mouse at that moment. Not sure what is the best way to do this.

Thanks.

Re: DataGridView selection on right click

Andrew Lygin25-Jul-06 8:47

Andrew Lygin

25-Jul-06 8:47

Hi, Johnny. This CellMouseDown event handler should work:

private void dataGridView_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
    if ((e.RowIndex >= 0) && (e.ColumnIndex >= 0))
    {
        dataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected = true;
    }
}

Re: DataGridView selection on right click

~~~Johnny~~~25-Jul-06 8:58

~~~Johnny~~~

25-Jul-06 8:58

WOW, that was so simple, thanks a million times Andrew

Activating Client side Web Service from Browser - HELP

Andrew Mercer25-Jul-06 6:05

Andrew Mercer

25-Jul-06 6:05

Hi,

Scenario:

1. User opens browser on their laptop/desktop.

2. User connects to remote web application.

3. User browses and clicks required button on web application.

4. As a result of clicking the button the web application activates/calls a web service on the client machine.

5. The web service then makes call back to web application and downloads the required data.

No data is delivered to the client ALL that happens is the action in (4) that allows a method to be called in the client and then the data is requested after necessary security checks.

Note: The desktop/laptop will always have .NET Framework installed. The call to the web service will always be to the current desktop/laptop.

Is the above possible? If not is there any suggestions as to a possible solution.

Thanks in advance.

Andrew

P.S I have done what I require with all the actions being driven by actions/calls from the client standalone windows application.

Web Access Failed

asprajesh25-Jul-06 3:48

asprajesh

25-Jul-06 3:48

Hi all I m new for .net and i m working on network system ...
my server name is "midserver" ..i was trying to create a new project with VS.Net named "test1" and i got error "The Default Web Access mode for this project is set to file share,but the project folder at 'http://midserver/test1' cannot be opend with the path'\\midserver\wwwroot$\test1' . The error returned was:
Unable to create Web project 'test1' . the UNC share'\\midserver\wwwroot$\test1' does not exist or you do not have access." ..
how i can overcome to this problem ..
thankyou in advance.

Life is not easy ,let's make it.

Re: Web Access Failed

Jonathan [Darka]25-Jul-06 23:17

Jonathan [Darka]

25-Jul-06 23:17

I don't want to be rude, but....

asprajesh wrote:
the UNC share'\\midserver\wwwroot$\test1' does not exist or you do not have access

should give you a clue, why not try reading the error message first.

Darka [Xanya]

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