如何在C＃中访问打印预览对话框的打印按钮事件 [英] How to Access Print Button Event of Print Preview Dialog in C#

问题描述

如何查看打印预览对话框的打印按钮事件？



例如：



I想打印页面只有一次，当第二次用户点击打印预览对话框的打印按钮，然后我将限制用户。

How can I Check Print Preview Dialog's print Button Event?

For Example :

I wanna print the page only one time and when second time user click on Print Preview Dialog's Print Button then I will restrict the user.

推荐答案

真的不能让你的想法落后于此..正如Dave Kreskowiak所说，你的案件可能存在错误。但是我正在开发一个需要PrintPreviewDialog的项目，当点击PrintPreviewDialog的Print选项时，我需要选择打印机而不是直接打印文档。所以我设法做了

1.操作PrintPreviewDialog的打印工具条

2.向PrintDocument.PrintPage事件和PrintPreview.PrintClick事件添加处理程序

Really cant get your Idea behind this.. As Dave Kreskowiak says about the possible errors of your case. But I am working on a project where I need PrintPreviewDialog and I need to select a printer instead of direct print of document when Print option of PrintPreviewDialog is clicked. So I managed to do
1. manipulate Print Toolstrip of the PrintPreviewDialog
2. Add a Handler to PrintDocument.PrintPage event and PrintPreview.PrintClick event

 Private Sub Print_btn_Click(sender As Object, e As EventArgs) Handles Print_btn.Click
        Dim b As New ToolStripButton
        b.Image = CType(PrintPreviewDialog1.Controls(1), ToolStrip).ImageList.Images(0)
        b.ToolTipText = "Print"
        b.DisplayStyle = ToolStripItemDisplayStyle.Image
        AddHandler b.Click, AddressOf PrintPreview_PrintClick
        CType(PrintPreviewDialog1.Controls(1), ToolStrip).Items.RemoveAt(0)
        CType(PrintPreviewDialog1.Controls(1), ToolStrip).Items.Insert(0, b)
        AddHandler PrintDocument1.PrintPage, AddressOf PrintDocument1_PrintPage
        PrintPreviewDialog1.Document = PrintDocument1
        PrintDocument1.OriginAtMargins = False
        PrintPreviewDialog1.ShowDialog()
    End Sub

Private Sub PrintPreview_PrintClick(sender As Object, e As EventArgs)
        Try
            PrintDialog1.Document = PrintDocument1
            If PrintDialog1.ShowDialog() = DialogResult.OK Then
                PrintDocument1.Print()
            End If
        Catch ex As Exception
        End Try
        
    End Sub

    Private Sub PrintDocument1_PrintPage(sender As Object, e As Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
        Me.BackgroundImage = WindowsApp1.My.Resources.Resources.WhiteBackground
        Dim print_bmp As Bitmap = GetClientareaImage(Me)
        e.Graphics.DrawImage(print_bmp, 0, 0)
    End Sub

我需要打印表单客户区的图像。所以我编写了与此解决方案无关的函数GetClientareaImage（）。这就是为什么我没有发布它。

I need to print the image of form's client area. So I write the function "GetClientareaImage()" which has no Relation to this solution. Thats why I am not posting it.

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