获取其他PaperSource详细信息
我试图获得各种打印机托盘的正确细节，但遇到了一个问题。 经过一些研究后，我添加了ReachFramework.dll
using System.Drawing.Printing; 要获取打印机托盘的名称，请运行以下代码…
PrintDocument printDocument = new PrintDocument(); printDocument.PrinterSettings.PrinterName = ""; foreach (PaperSource paperSource in printDocument.PrinterSettings.PaperSources) { Console.WriteLine(paperSource.ToString()); }
…替换’Windows Printer Name’。 对于一些打印机，它工作得很好，我得到类似以下输出…
[PaperSource Auto Tray Select Kind=AutomaticFeed] [PaperSource Tray 1 Kind=Upper] [PaperSource Tray 2 Kind=Middle] [PaperSource Tray 3 Kind=Lower] [PaperSource Bypass Tray Kind=Manual]
这是你所期望的。 但对于某些打印机，我得到以下……
[PaperSource Automatically Select Kind=FormSource] [PaperSource Printer auto select Kind=Custom] [PaperSource Manual Feed in Tray 1 Kind=Custom] [PaperSource Tray 1 Kind=Custom] [PaperSource Tray 2 Kind=Custom] [PaperSource Tray 3 Kind=Custom] [PaperSource Unspecified Kind=Custom] [PaperSource Plain Kind=Custom] [PaperSource HP Matte 90g Kind=Custom] [PaperSource Light 60-74g Kind=Custom] [PaperSource Bond Kind=Custom] [PaperSource Recycled Kind=Custom] [PaperSource HP Matte 105g Kind=Custom] [PaperSource HP Matte 120g Kind=Custom] [PaperSource HP Soft Gloss 120g Kind=Custom] [PaperSource HP Glossy 130g Kind=Custom] ... Additional 20 lines ...
此打印机返回36个托盘，但只有前6个是有效的托盘类型。 此外，打印机仅配备2个标准托盘，因此“托盘3”也不存在。
所以我的问题是这个。 如何过滤此列表以便只显示正确的托盘？
通过更改foreach并添加如下所示的if语句找到部分答案…
foreach (PaperSource paperSource in printDocument.PrinterSettings.PaperSources) { if (paperSource.RawKind < 1000) { Console.WriteLine(paperSource.ToString()); } }
这产生以下输出......
[PaperSource Automatically Select Kind=FormSource] [PaperSource Printer auto select Kind=Custom] [PaperSource Manual Feed in Tray 1 Kind=Custom] [PaperSource Tray 1 Kind=Custom] [PaperSource Tray 2 Kind=Custom] [PaperSource Tray 3 Kind=Custom]
虽然不理想但它确实解决了问题的一部分。 但是，它不能解决不存在的有效托盘的问题。
这有点晚了，但我只是想补充一点，我在VB.net中做了非常类似的事情，而RawKind的部分内容确实帮助切断了“混乱”。 我的方式有点不同，我基本上希望最终用户捕获特定类型纸张/打印的打印机和托盘。 然后我可以在没有任何提示的情况下打印出报告。
在我的frmPrinterSelection上，我有两个combobox; cboInstalledPrinters（列出已安装的打印机）和cboPaperSource（列出纸张来源），下面是我的代码。 希望它可以帮助有人试图捕获打印机和托盘供以后使用。
Private Sub frmPrinterSelection_Load(sender As Object, e As EventArgs) Handles MyBase.Load cboInstalledPrinters.Items.Clear() Dim pkInstalledPrinters As String ' Find all printers installed For Each pkInstalledPrinters In PrinterSettings.InstalledPrinters cboInstalledPrinters.Items.Add(pkInstalledPrinters) Next pkInstalledPrinters 'https://msdn.microsoft.com/en-us/library/system.drawing.printing.printersettings(v=vs.110).aspx End Sub Private Sub cboInstalledPrinters_SelectionChangeCommitted(sender As Object, e As EventArgs) Handles cboInstalledPrinters.SelectionChangeCommitted Dim pkSource As Printing.PaperSource Dim strPrinter As String Dim printDoc As New Printing.PrintDocument Dim intTray As Integer cboPaperSource.Items.Clear() ' Add list of paper sources found on the printer to the combo box. ' The DisplayMember property is used to identify the property that will provide the display string. strPrinter = cboInstalledPrinters.SelectedItem printDoc.PrinterSettings.PrinterName = strPrinter For intTray = 0 To printDoc.PrinterSettings.PaperSources.Count - 1 pkSource = printDoc.PrinterSettings.PaperSources.Item(intTray) If pkSource.RawKind < 1000 Then cboPaperSource.Items.Add(Trim(pkSource.SourceName)) Else MsgBox(pkSource) End If Next Me.cboPaperSource.Focus() Me.cboPaperSource.DroppedDown = vbTrue End Sub