Handle 2D Scanner read event

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Hi All,
I have a USB 2D scanner, and I want to read PDF417 barcode.
It returns an Asscii code so when I read it using a notepad many windows start to open.
I tried to use the same code as the regular barcode scanner with a Textbox and handled the KeyDown event but did not work too.
Can anyone help how to read this Ascii code???

C#

private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                var result = textBox1.Text;
                MessageBox.Show(result.ToString());
            }

        }

But this did not work.

Posted 5-Jun-13 21:14pm

Mohammad Al Hoss

Updated 6-Jun-13 18:28pm

Sunasara Imdadhusen

v2

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Comments

Sunasara Imdadhusen 6-Jun-13 8:22am

please provide code snippet!!

Marc Gabrie 6-Jun-13 10:26am

The focus should be on the textbox but try handling other events like TextChanged

Mohammad Al Hoss 6-Jun-13 16:19pm

I will try and get back to you thanks.

Mohammad Al Hoss 8-Jun-13 10:55am

I tried to do this
private void TextBox1_KeyPress(object sender, KeyPressEventArgs e)
{
Console.WriteLine(e.KeyChar.ToString()); //You can do other process here
e.Handled = true;
}
but still the returned Ascii code is sending events to the application and opening help windows and other stuff.

Marc Gabrie 9-Jun-13 8:19am

Then maybe you need to handle any input in a global way. Try this

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Ezra Neil · Answer 1 · 2013-06-06T15:30:00

Solution 1

You should do it at keypress event instead and cancel the key output to the textbox

C#

private void TextBox1_KeyPress(object sender, KeyPressEventArgs e)
{
	Console.WriteLine(e.KeyChar.ToString()); //You can do other process here
	e.Handled = true;
}

Posted 6-Jun-13 15:30pm

Ezra Neil