Print html document from Windows Service in C# without print dialog

Question

I am using a windows service and i want to print a .html page when the service will start. I am using this code and it\'s printing well. But a print dialog box come, how do

Answer 1

To add to Vadim's limitation you can set the default printer before printing by using:

    static void SetAsDefaultPrinter(string printerDevice)
    {
        foreach (var printer in PrinterSettings.InstalledPrinters)
        {
            //verify that the printer exists here
        }
        var path = "win32_printer.DeviceId='" + printerDevice + "'";
        using (var printer = new ManagementObject(path))
        {
            printer.InvokeMethod("SetDefaultPrinter",
                                 null, null);
        }

        return;
    }

And changeing slightly the PrintHtml method with:

    public void PrintHtml(string htmlPath, string printerDevice)
    {
        if (!string.IsNullOrEmpty(printerDevice))
            SetAsDefaultPrinter(printerDevice);


        Task.Factory.StartNew(() => PrintOnStaThread(htmlPath), CancellationToken.None, TaskCreationOptions.None, _sta).Wait();
    }

Now I don't know how that will fair in a heavy printing environment considering there could be concurrency issues with changeing the default printer a lot. But so far this is the best I came up with to fix this limitation.