Aspose.Cells 设置背景颜色

很多小伙伴设置背景颜色都不起作用，特别提醒需要加入下面一行：

style.Pattern = BackgroundType.Solid;

Aspose.Cells.Style style = null;
int index = workbook.Styles.Add();
style = workbook.Styles[index];
//文本颜色
style.Font.Color = Color.Red;
style.Font.Size = ;
//设置背景颜色
style.ForegroundColor = System.Drawing.Color.Silver;
style.Pattern = BackgroundType.Solid;
style.Font.IsBold = true;
style.HorizontalAlignment = Aspose.Cells.TextAlignmentType.Center;
style.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin; //应用边界线 左边界线
style.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin; //应用边界线 右边界线
style.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin; //应用边界线 上边界线
style.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin; //应用边界线 下边界线
Aspose.Cells.Range w = cells.CreateRange(row, col, , );
w.ApplyStyle(style, new StyleFlag() { All=true});