您忘记添加比较运算符，如=或L数量和价格后的IKE。

以下代码块中需要更改 -

You have forgotten to add compare operator like = or LIKE after Quantity and Price.
Change required in following code block-

bs.Filter = "Barcode LIKE '" & txtBar.Text & "*' or ItemName LIKE '" & txtBar.Text & "*' or ItemDescription '" & txtBar.Text & "*' or Quantity '" & txtBar.Text & "*'or Price '" & txtBar.Text & "*';"

希望，它有助于：）

Hope, it helps :)