How to print a word file using PrintDialog class in c#

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C#3.5

How to print a word file using PrintDialog class in c#, I have tried with following code but failed to print.

see below snippet and please suggest

PrintDialog printDlg = new PrintDialog();
            PrintDocument printDoc = new PrintDocument();
            PrinterSettings prnsetting = new PrinterSettings();

                    prnsetting.PrintFileName = @"D:\\.docx";
            prnsetting.PrintRange = PrintRange.SomePages;
            prnsetting.FromPage = 6;
            prnsetting.ToPage = 8;

           // printDoc.PrintPage += printDoc_PrintPage;

            PageSettings pge = new PageSettings(prnsetting);
            pge.Landscape = false;

            printDoc.DocumentName = "test";
            printDoc.PrinterSettings = prnsetting;

            printDoc.PrintController = new StandardPrintController();

            printDlg.Document = printDoc;
            printDlg.AllowSelection = true;
            printDlg.AllowSomePages = true;
            ////Call ShowDialog
            if (printDlg.ShowDialog() == DialogResult.OK)
                printDoc.Print();