private void GenerateLetter(Word.Selection wrdSelection, Word.MailMerge wrdMailMerge, out Word.MailMergeFields wrdMergeFields)
        {
            // Create a string and insert it into the document.
            wrdSelection.Font.Bold = 1;
            var strToAdd = _mailMergeData.Originator.Company + Environment.NewLine + _mailMergeData.Originator.Department;

            wrdSelection.ParagraphFormat.Alignment =
                Word.WdParagraphAlignment.wdAlignParagraphCenter;
            wrdSelection.ParagraphFormat.LineSpacingRule = Word.WdLineSpacing.wdLineSpaceSingle;
            wrdSelection.TypeText(strToAdd);

            InsertLines(4);

            // Insert merge data.
            wrdSelection.Font.Bold = 0;
            wrdSelection.ParagraphFormat.Alignment = Word.WdParagraphAlignment.wdAlignParagraphLeft;
            wrdMergeFields = wrdMailMerge.Fields;
            wrdMergeFields.Add(wrdSelection.Range, "Name");
            wrdSelection.TypeParagraph();
            wrdMergeFields.Add(wrdSelection.Range, "Address");

            InsertLines(2);

            // Right justify the line and insert a date field
            // with the current date.
            wrdSelection.ParagraphFormat.Alignment =
                Word.WdParagraphAlignment.wdAlignParagraphRight;

            Object objDate = "dddd, MMMM dd, yyyy";

            wrdSelection.InsertDateTime(ref objDate, ref _oFalse, ref _oMissing,
                                        ref _oMissing, ref _oMissing);

            InsertLines(2);

            // Justify the rest of the document.
            wrdSelection.ParagraphFormat.Alignment =
                Word.WdParagraphAlignment.wdAlignParagraphJustify;

            wrdSelection.TypeText("Dear ");
            wrdMergeFields.Add(wrdSelection.Range, "Name");
            wrdSelection.TypeText(",");
            InsertLines(2);

            //insert the messagebody
            wrdSelection.TypeText(_mailMergeData.MessageBody);
            InsertLines(2);

            // Go to the end of the document.
            Object oConst1 = Word.WdGoToItem.wdGoToLine;
            Object oConst2 = Word.WdGoToDirection.wdGoToLast;

            _wrdApp.Selection.GoTo(ref oConst1, ref oConst2, ref _oMissing, ref _oMissing);
            InsertLines(2);

            strToAdd = "Thank You," + Environment.NewLine + _mailMergeData.Originator.Name + Environment.NewLine + _mailMergeData.Originator.Designation;
            wrdSelection.TypeText(strToAdd);
        }