条形码读取C＃中的额外数字值 [英] Barcode reading extra digits values in C#

问题描述

<强>问题

当用c＃读取条形码扫描器并接收变量读数值时

when read barcode scanner by c# and receive value of reading in variable

msg它将扫描的ItemCode读取为3300002266 / r并且此值错误

msg it reading scanned ItemCode as 3300002266/r AND this value is wrong

推荐答案

您忘记了重要的部分：您将扫描仪作为HID（键盘）运行。

You forgot the important part: you're running the scanner as HID (Keyboard).

在这种情况下，您有两种选择：

In this case, you have two choices:

1）没有特殊编码，用户有责任将焦点放在正确的目的地（TextBox）。

1) no special codeing, the user is responsible to place the focus into the correct destination (TextBox).

2）更改扫描仪设置，所以它使用条形码标记的特殊开始和结束（参见其文档）。然后在表单上使用过滤器。发送开始标记时，将任何数据重定向到条形码缓冲区，直到收到结束标记。还可以使用
计时器来检测中止的通信。

2) Change the scanner setup, so that it uses a special start and end of barcode marker (see its documentation). Then use a filter on the form. When the start marker was sent redirect any data to your barcode buffer until the end marker is received. Use also a timer to detect aborted communication.

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