文本对齐和自动换行
//make column H wider and set the text align to the top and right
worksheet.Column(8).Width = 25;
worksheet.Column(8).Style.HorizontalAlignment = ExcelHorizontalAlignment.Right;
worksheet.Column(8).Style.VerticalAlignment = ExcelVerticalAlignment.Top;
//wrap text in the cells
worksheet.Column(8).Style.WrapText = true;