Question

我正在开发一个超市系统，它将使用.net。

开票后打印pos账单

对于票据打印，我在.net。

中使用System.Drawing.Printing

问题是当项目列表太长时，当它增加一页限制时，打印机只打印第一页并剪纸。

以下是我使用的打印代码示例。请帮我解决这个问题。

Private Sub printInvoice()

     Dim printDocument As New PrintDocument
     Dim printController As New StandardPrintController
     printDocument.PrintController = printController
     AddHandler printDocument.PrintPage, AddressOf PrintDocumnet_Event
     printDocument.Print()

End Sub

Public Sub PrintDocumnet_Event(ByVal sender As Object, ByVal e As PrintPageEventArgs)
    Try
        Dim dataFont As Font = New Font("Courier New", 9, FontStyle.Bold)
        Dim leftMargin As Integer = 15
        Dim topMargin As Integer = 65


        For Each invoiceRow As DataRow In dtInvoice.Rows
            Dim code As String = invoiceRow("Item_Code").ToString.Trim
            Dim name As String = invoiceRow("Print_Name").ToString.Trim
            Dim price As String = String.Format("{0:0.00}", Double.Parse(invoiceRow("Price"))) + "x"
            Dim qty As String = String.Format("{0:0.###}", Double.Parse(invoiceRow("Qty")))
            Dim amont As String = String.Format("{0:0.00}", Double.Parse(invoiceRow("Amount")))
            Dim discount As String = String.Format("{0:0.00}", Double.Parse(invoiceRow("Discount")))


            e.Graphics.DrawString(String.Format("{0,-8}", name), dataFont, Brushes.Black, leftMargin, topMargin)
            topMargin += 15
            e.Graphics.DrawString(String.Format("{0,-10} {1,7} {2,5} {3,8}", code, price, qty, amont), dataFont, Brushes.Black, leftMargin, topMargin)
            topMargin += 20
        Next
End Sub

Answer 1

对所有人而言。我找到了解决方案。我必须根据项目列表检查页面高度，并在页面超出时添加以下内容。

 e.HasMorePages = True

.net pos打印机滚动打印

1 个答案: