使用 PrintDocument 打印 ComboBox 的所有项目答案

【问题标题】：Printing all items of ComboBox using PrintDocument使用 PrintDocument 打印 ComboBox 的所有项目
【发布时间】：2012-11-11 01:23:04
【问题描述】：

我正在尝试打印程序中组合框的所有内容，编号。

ComboBox1 内容：

Yes

No

Maybe

No Opinion

到目前为止，我的 PrintDocument1 代码：

Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
    Dim horizontalPrintPosition As Single
    Dim verticalPrintPosition As Single
    Dim PrintFont As New Font("Arial", 12)
    e.Graphics.DrawString("Info from ComboBox1 would go here", PrintFont, Brushes.Black, horizontalPrintPosition, verticalPrintPosition)
End Sub

例如，期望的输出是：

1. Yes

2. No

3. Maybe

4. No Opinion

谢谢！

【问题讨论】：

您发布的代码似乎与您的问题无关。您尝试打印什么编号的版本？ whathaveyoutried.com

标签： vb.net winforms visual-studio-2010 printdocument

【解决方案1】：

您将需要遍历 ComboBox Items 集合以获取您的值，类似这样。

Private Sub PrintDocument1_PrintPage(sender As System.Object, e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
    Dim horizontalPrintPosition As Single
    Dim verticalPrintPosition As Single
    Dim PrintFont As New Font("Arial", 12)

    For x = 0 To ComboBox1.Items.Count - 1
        e.Graphics.DrawString((x + 1).ToString() & ". " & ComboBox1.Items(x).ToString(), PrintFont, Brushes.Black, horizontalPrintPosition, verticalPrintPosition)
        verticalPrintPosition += PrintFont.Height
    Next

End Sub

【讨论】：