A barcode reader simply simulates a keyboard. However, most barcode readers can be programmed to add preceding and/or trailing characters. In this case it sounds like your reader adds a few extra characters after the barcodes are read. You must check the documentation for your barcode reader, and program it correctly for your use.

>I am writing in textbox from barcode reader.(working well). but when i trying to click button === thisform.cmds.command1.Click().(write in lost focus)but this clik happen twice.
>
>When i write with hand in textbox, no problem. also this command click single thisform.cmds.command1.Click().
>thanks