private void button1_Click(object sender, EventArgs e)
{
Document document = new Document();
Section section = document.AddSection();
//page setup
SetPage(section);
//insert header and footer.
InsertHeaderAndFooter(section);
//add title
AddTitle(section);
//add form
AddForm(section);
//protect document, only form fields could be edited.
document.Protect(ProtectionType.AllowOnlyFormFields, "e-iceblue");
//Save doc file.
document.SaveToFile("Sample.doc",FileFormat.Doc);
//Launching the MS Word file.
WordDocViewer("Sample.doc");
}