如何用cmd或其他代码的方法来关闭打印机中的双向支持

Question

如何用cmd或其他代码的方法来关闭打印机中的双向支持？针式打印机属性中端口一栏有双向支持这个选项，想用脚本一键关闭，不想手动关闭。

Answer 1

Hi @com com ,

This is an English-language forum, so it is recommended that you edit the question to post it in English.

You can refer to the following code using WMI.

    Public Shared Sub DisableBidirectionalSupport(printerName As String)
        Dim query As String = String.Format("SELECT * FROM Win32_Printer WHERE Name = '{0}'", printerName)

        Dim searcher As New ManagementObjectSearcher(query)
        Dim printer As ManagementObject = Nothing

        For Each obj As ManagementObject In searcher.Get()
            printer = obj
            Exit For
        Next

        If printer IsNot Nothing Then
            Dim bidirectionalSupport As Boolean = Convert.ToBoolean(printer("BidirectionalSupport"))

            If bidirectionalSupport Then
                printer("BidirectionalSupport") = False
                printer.Put()
                Console.WriteLine("Bidirectional support disabled for printer: " & printerName)
            Else
                Console.WriteLine("Bidirectional support is already disabled for printer: " & printerName)
            End If
        Else
            Console.WriteLine("Printer not found: " & printerName)
        End If
    End Sub

Best Regards.

Jiachen Li

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