Having the image at the third second of a video - C# Discussion Boards

Having the image at the third second of a video

30-Jul-20 7:42

You go frame-by-frame; using the frame rate to calculate "time in".

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

Tec Zone30-Jul-20 6:11

Tec Zone

30-Jul-20 6:11

foreach (string file in filePaths)
{

}

answer

Member 1490198229-Jul-20 7:29

Member 14901982

29-Jul-20 7:29

How to connect the device with the C # language

OriginalGriff29-Jul-20 7:45

OriginalGriff

29-Jul-20 7:45

We can't answer that.
This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with. So we have no idea what kind of device you are talking about, how it physically connects to the computer, or anything else about it.

That's like asking "how do I get to Mike's house?" without specifying the which country "Mike" lives in, much less what his full name might be!

"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
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Gerry Schmitz29-Jul-20 10:01

29-Jul-20 10:01

The first thing I usually try is to Ping it.

Ping Class (System.Net.NetworkInformation) | Microsoft Docs

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

OriginalGriff29-Jul-20 10:12

OriginalGriff

29-Jul-20 10:12

Ah! So you have the Machine That Goes Ping[^]!

Gerry Schmitz29-Jul-20 22:47

29-Jul-20 22:47

Ni!

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

Richard MacCutchan29-Jul-20 22:56

Richard MacCutchan

29-Jul-20 22:56

my first thought also.

Gerry Schmitz29-Jul-20 23:03

29-Jul-20 23:03

Neeeow...wum...ping!

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

Dave Kreskowiak29-Jul-20 11:14

Dave Kreskowiak

29-Jul-20 11:14

Impossible to answer. You haven't specified what the "device" is, so it's impossible for ANYONE to tell you how to "connect it with C#". You've left out every possible detail you could to describe the problem.

Asking questions is a skill[^] that you seriously need to work on.

Asking questions is a skill
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Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

Eddy Vluggen30-Jul-20 0:50

Eddy Vluggen

30-Jul-20 0:50

Member 14901982 wrote:
How to connect the device with the C # language

As specified in the documentation; if you want to write a device-driver, then the answer is no.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

jsc4230-Jul-20 6:10

jsc42

30-Jul-20 6:10

Have you tried switching it off and on again?

User Control function C#

Ismael_199928-Jul-20 4:46

Ismael_1999

28-Jul-20 4:46

I created a UserControl with 5 buttons: New, Edit, Delete, Save, Cancel. All buttons have functions associated to them, programable by the user. Normally the 3 first buttons are enabled and the 2 other are disabled. When the user clicks on New or Edit, the 3 first buttons become disabled and the 2 others, enabled. When the user clicks on Save, or Cancel, it returns to the original state. It's working fine, but there is an issue.
In an application, when the user clicks on the Save button, the program must first verify if the fields are all filled. If yes, OK. But if not, the function should do nothing. So, what I need is a way of, in the main program, test the fields and pass this information to the control. But I don't know how. I tried to create a funtion in the control type virtual and in the main program I tried to create the same function with override, but it didn't work. Can anyone help me?
Thanks.
Ismael

Richard Andrew x6428-Jul-20 5:11

Richard Andrew x64

28-Jul-20 5:11

Create a public event inside the control that gets raised when the user clicks the Save button. And make the event handler take the fields that must be verified.

Then the event handler inside the main program can return true or false, which will tell the event whether it should proceed with saving the information.

The difficult we do right away...
...the impossible takes slightly longer.

Ismael_199929-Jul-20 5:32

Ismael_1999

29-Jul-20 5:32

Hi, Richard.
In my control I have these events:

public event EventHandler ClickNovo;
public event EventHandler ClickEditar;
public event EventHandler ClickApagar;
public event EventHandler ClickSalvar;
public event EventHandler ClickCancelar;

Do you sugest that I create another event? Could you give me an example?
Thanks.

Gerry Schmitz29-Jul-20 7:11

29-Jul-20 7:11

Some of this depends on your architecture, and whether it's Windows Forms or WPF / UWP; each use different patterns for validation.

If you only check validity on "save", you're doing "record-level" validation (easy) versus field-level validation (harder, due to cross-referencing and handling focus).

The "easy" way is to use a "data object" as the "view model" / transport between the "view" (form / window) and the "model" (data access layer / repository). This data object is used to pass data to the user control (to initialize the view / form / window) and to retrieve the "record" from the UC to be saved (add or update).

You may bind to the view model directly or copy the view data to it when saving. You then validate the data object and display the first error or save. If you have different "validation routines", you can pass a delegate (at initialize / load time) to the user control that accepts the data object and returns a status / error (if it's not feasible to have actually validation code in the user control.)

In the save "click" event, disable save (to avoid re-entrancy), copy the view / UC data to the view model (if not binding directly), validate, then save if OK or return an error. Reset buttons accordingly.

This pattern works for "Add" and "Update".

Deletes usually require some thinking about what to "display" after a delete and any further operations (like "add back in" or revert).

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food

Ismael_199929-Jul-20 10:02

Ismael_1999

29-Jul-20 10:02

Hi, Gerry.

My idea was to create a validation function in the main program and when the user clicks on the Save buttons, before anything it calls that validation function. Do you know how to do this?
Thanks.

Gerry Schmitz30-Jul-20 0:10

30-Jul-20 0:10

"Save" is form-level function; primitive controls and UC's are bit players to the form. In the Save / button event (on the form), retrieve the "data object" (view model) which consolidates all the UI / form's input, validate it, then save the contents or display an error.

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food