C# 显示用户打印预览，并在用户打印时执行代码

我有一个位图，我想让用户在打印前看到它。所以我为他打开打印预览，如果用户决定打印，我想执行一些代码

问题是，

printPreviewDialog

不会返回答案。这可能是因为它只有一个打印按钮和关闭按钮，但没有打印和关闭按钮，所以我可以知道用户决定打印

如果你有解决办法，我会很高兴，如果你认为这不是最好的办法，请告诉我

代码：

---

订阅要发送到

printPreviewDialog

控件的文档的

EndPrint

事件，然后在其

PrintEventArgs

参数中检查

PrintAction

例如：

private void buttonPrintPreview_Click(object sender, EventArgs e)
    {
        PrintPreviewDialog printDialog = new PrintPreviewDialog();
        printDialog.Document = yourDocument;
        yourDocument.EndPrint += doc_EndPrint; // Subscribe to EndPrint event of your document here.
        printDialog.ShowDialog();
    }

    void doc_EndPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
    {
        if (e.PrintAction == System.Drawing.Printing.PrintAction.PrintToPrinter)
        {
            // Printing to the printer!
        }
        else if (e.PrintAction == System.Drawing.Printing.PrintAction.PrintToPreview)
        {
            // Printing to the preview dialog!
        }
    }

---

你能提供你尝试过的代码吗？是的，我刚刚编辑了我的问题

private void buttonPrintPreview_Click(object sender, EventArgs e)
    {
        PrintPreviewDialog printDialog = new PrintPreviewDialog();
        printDialog.Document = yourDocument;
        yourDocument.EndPrint += doc_EndPrint; // Subscribe to EndPrint event of your document here.
        printDialog.ShowDialog();
    }

    void doc_EndPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
    {
        if (e.PrintAction == System.Drawing.Printing.PrintAction.PrintToPrinter)
        {
            // Printing to the printer!
        }
        else if (e.PrintAction == System.Drawing.Printing.PrintAction.PrintToPreview)
        {
            // Printing to the preview dialog!
        }
    }