【一步一步学NPOI】5.单元格合并与对齐

1.合并单元格

需要用到的类：CellRangeAddress

CellRangeAddress类的构造方法

  public CellRangeAddress(int firstRow, int lastRow, int firstCol, int lastCol);

一共四个参数，分别是：待合并的开始行、结束行、开始列、结束列，参数均为索引值，从0开始。

          //合并第一行，7个单元格            sheet1.AddMergedRegion(new CellRangeAddress(0, 0, 0, 6));            //合并第4行至第6行，第3列至第6列            sheet1.AddMergedRegion(new CellRangeAddress(3,5,2,5));

2.对齐

对齐分为水平方向和竖直方向，对应的属性分别为：Alignment和VerticalAlignment

//水平方向          style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Left;//左对齐            //style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Right;//右对齐            //style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;//居中            //竖直方向            style.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Center;//垂直居中            //自动换行            style.WrapText = true;            //文本缩进            style.Indention = 2;