How I Can Use Code Barre Scanner In C# Application ?

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i have created an application with vs 2012(winform application) that scan a code barre of product and automatically detect a name of product from a database , i need how i can use a code bar scanner with my application in order to detect automatically the value of the code without press a button ?

Posted 28-Jun-15 10:11am

Mohammed-cd7

Updated 28-Jun-15 10:12am

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Solution 1

Most scanners are configured to act as a keyboard, so as long as your application is "sitting" with the focus in a text box or similar the barcode data should be entered automatically.
If that isn't what you need, it is normally possible to change the way they work to (say) provide a start and end code your application can recognise - buy that needs to be worked out with the equipment manufacturer.

Once you have the barcode, it's pretty obvious how you use that to look up the related product in your DB and work with it.

Posted 28-Jun-15 10:36am

OriginalGriff

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Sascha Lefèvre · Accepted Answer · 2015-06-28T10:38:00

It's really simple - please refer to one of my previous answers to the same kind of question: How to read a barcode using a barcode scanner[^]

In addition to the linked answer: Most barcode scanners automatically append a return character to the scanned barcode by default, otherwise it can be configured that way (or to append a different or no character).

Edit after comment:
If you have your barcode scanner configured to append a return character then you can use this kind of code to process a scanned barcode:

C#

public Form1()
{
    InitializeComponent();

    BarcodeTextBox.KeyDown += BarcodeTextBoxKeyDown;
}

private void BarcodeTextBoxKeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter) // wait for the return character
    {
        string barcode = BarcodeTextBox.Text;
        BarcodeTextBox.Text = "";
        e.Handled = true;

        // todo: do something with barcode
    }
}