Aspose.Words.Document doc = new Document();//新建一个空白的文档
Aspose.Words.DocumentBuilder builder = new Aspose.Words.DocumentBuilder(doc);

1 页面样式

builder.PageSetup.PaperSize = PaperSize.A4;//A4纸
builder.PageSetup.Orientation = Aspose.Words.Orientation.Portrait;//方向
builder.PageSetup.VerticalAlignment = Aspose.Words.PageVerticalAlignment.Top;//垂直对准
builder.PageSetup.LeftMargin = 42;//页面左边距
builder.PageSetup.RightMargin = 42;//页面右边距

2 段落样式

builder.ParagraphFormat.Alignment = ParagraphAlignment.Center;//文字对齐方式
builder.ParagraphFormat.LineSpacing = 12;// 单倍行距 = 12 ， 1.5 倍 = 18
builder.ParagraphFormat.SpaceBefore = 0;//段前
builder.ParagraphFormat.SpaceAfter = 0;//段后
builder.ParagraphFormat.Shading.BackgroundPatternColor = Color.Yellow;//当前段落背景颜色
builder.ParagraphFormat.Style.Font.Shading.BackgroundPatternColor = Color.Yellow;//段落文字背景颜色（所有段落字体）

3 单元格样式

builder.CellFormat.Shading.BackgroundPatternColor = Color.Yellow;//当前单元格背景颜色