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Re: C# barcode decoding library

Andrea Simonassi7-Dec-16 4:18

Andrea Simonassi

7-Dec-16 4:18

Hello, about ten years ago, I developed my first and only one client app for a barcode scanner, it was a psion workabout scanner, i can't remember how, but I remember that PSION provided an API that allowed me to register my app into the scanner hardware and get the scanning codes as EVENTS instead of use keyboard emulation, the event arguments were a structure containing lot of metadata about the barcode, such as "barcode kind" geometries and so on, the event arguments also provided a raw byte array of scanning data, which I used to parse a bunch of GS-1 logistic labels.

All the above just to say that maybe the hardware manufacturer could provide you the API you need to communicate with their hardware device / driver.

Good luck

Open the conditional form ?

Member 245846727-Nov-16 17:56

Member 2458467

27-Nov-16 17:56

Assuming the program appears to open the form repeated in many places in the program through the following code:
[CODE]
if (agreed conditions the open form 1)
{
Form1 frm = new Form1();
frm.Show();
}
[/CODE]

instead of checking conditions in outside open Form1 form and the opening of Form1 appears many places in the program you want to put conditions inside Form1 it will be difficult to implement, there are certain you know this how ?

Re: Open the conditional form ?

Daniel Pfeffer27-Nov-16 20:57

Daniel Pfeffer

27-Nov-16 20:57

You could, I suppose, implement a static method in the Form class that would check if the correct conditions exist, and then create (and display) the form, but you would still have to call this method from any place where the form should be displayed.

If the conditions could be encapsulated in an event, perhaps it would be possible to create an event handler that would create the form. It all depends on what you are trying to achieve. However, unless the conditions for showing the form are identical in all locations, I see no advantage to using either of these techniques.

If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.

--Winston Churchill

Re: Open the conditional form ?

OriginalGriff27-Nov-16 21:14

OriginalGriff

27-Nov-16 21:14

Add a static method to the Form which checks the conditions, and if they are all fine, creates the instance and displays it. Then all you have to do is call the static method.
So if your condition was for example "number of elements greater than five"

public static Form1 CreateIfNeeded(int count)
   {
   if (count > 5)
      {
      Form1 f = new Form1();
      f.Show();
      return f;
      }
   return null;
   }

And call it:

Form1 f = Form1.CreateIfNeeded(MyList.Count);

Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

Re: Open the conditional form ?

Member 245846729-Nov-16 17:42

Member 2458467

29-Nov-16 17:42

You do not understand my question, I'm asking condition to Open form outside Form and condition to open form inside Form ?

C# Labels

Pavlex427-Nov-16 3:21

Pavlex4

27-Nov-16 3:21

I am trying to make game that you have 12 random letters and with them you should make longest possible word that exist in ditionary.I want to loop through all labels and every time button is clicked each label separatly stops generating letters,when 12 label stops generating letters timer should stop.How to give same name for all labels?