Hi<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Thanks for your inquiry. I think that you should use RemoveEmptyParagraphs property. See the following link for more information.
http://www.aspose.com/documentation/file-format-components/aspose.words-for-.net-and-java/aspose.words.reporting.mailmerge.removeemptyparagraphs.html
Also see the following code example and attached documents.
//Prepare datasource
DataTable table = new DataTable();
table.Columns.Add("CustomerLastName");
table.Columns.Add("CustomerFirstName");
table.Columns.Add("CustomerMI");
table.Columns.Add("CustomerAddress1");
table.Columns.Add("CustomerAddress2");
table.Columns.Add("CustomerCity");
table.Columns.Add("CustomerState");
table.Columns.Add("CustomerPostalCode");
table.Columns.Add("CustomerPhone");
//Add data
table.Rows.Add(new object[] { "Noskov", "Alexey", "Mr", "My address", null, "<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Auckland", "NZ", "61202", "98479349863"});
//Open template
Document doc = new Document(@"Test050\in.doc");
//Specifies whether paragraphs that contained mail merge
//fields with no data should be removed from the document.
doc.MailMerge.RemoveEmptyParagraphs = true;
//Execute mail merge
doc.MailMerge.Execute(table);
//Save document
doc.Save(@"Test050\out.doc");
Hope this helps.
Best regards.