Cannot show print dialog on the top of asp.net web control

问题

I am currently using System.Windows.Forms.PrintDialog on a custom control in ASP.net because I want to show the print dialog and assign its PrinterSettings to ReportPrintDocument.PrinterSettings after I click Ok button on the dialog. Here is my code:

using (PrintDialog printDialog = new PrintDialog())
                {
                   if (printDialog.ShowDialog() == DialogResult.OK)
                    {
                        ReportPrintDocument rp = new ReportPrintDocument(rvPermit.ServerReport);
                        rp.PrinterSettings = printDialog.PrinterSettings;
                        rp.Print();
                    }
                }

My problem is that the print dialog always show behind the web browser and I couldn't know that it is showing or not until I minimize the web browser.

Do you know how to show the print dialog on the top of a web form? Please help.

回答1:

Here is my solution for now. (Not recommended) If you can find another one, please share it to me and I'm very appreciate your help on that.

initialize a new window form Form currentForm = new Form();
show the form currentForm.Show();
Activate the form currentForm.Activate();
Set its TopMost to true, so it will bring the form to the top currentForm.TopMost = true;
Set it to be Focus currentForm.Focus()
set the form.visible = false currentForm.Visible = false;
start to show the print dialog printDialog.ShowDialog(currentForm)

close the new form currentForm.Close();

   try
        {

          using (PrintDialog printDialog = new PrintDialog())
            {
                ReportPrintDocument rp = new ReportPrintDocument(rvPermit.ServerReport);

                Form currentForm = new Form();
                currentForm.Show();
                currentForm.Activate();
                currentForm.TopMost = true;
                currentForm.Focus();
                currentForm.Visible = false;

            if (printDialog.ShowDialog(currentForm) == DialogResult.OK)
            {
                if (PrintReport != null)
                    PrintReport(this, e);

                rp.PrinterSettings = printDialog.PrinterSettings;
                rp.Print();
            }

            currentForm.Close();
        }
    }
    catch (Exception)
    {
        // Prevent any error while calling the printer dialog
    }

来源：https://stackoverflow.com/questions/22202680/cannot-show-print-dialog-on-the-top-of-asp-net-web-control

标签

printdialog