【C#】NPOI（2.4.1）生成word中的常用功能

控制word页内边距

            //创建document对象
            var doc = new XWPFDocument();
            doc.Document.body.sectPr = new CT_SectPr();
            CT_SectPr m_SectPr = doc.Document.body.sectPr;
            m_SectPr.pgSz.h = (ulong)16838;
            m_SectPr.pgSz.w = (ulong)11906;
            m_SectPr.pgMar.left = (ulong)800;//左边距
            m_SectPr.pgMar.right = (ulong)800;//右边距
            m_SectPr.pgMar.top = "850";//上边距
            m_SectPr.pgMar.bottom = "850";//下边距

创建段落

            var paragraph = doc.CreateParagraph();
            paragraph.Alignment = ParagraphAlignment.CENTER; //字体居中
            var run = paragraph.CreateRun();
            run.IsBold = true;
            run.SetText(contend);
            run.FontSize = 28;
            run.SetFontFamily("黑体", FontCharRange.None); //设置黑体

控制段落与其他元素的上下距离

            paragraph.SpacingBeforeLines = 20;//上方距离
            paragraph.SpacingAfterLines = 20;//下方距离

换页（本页未满直接写下一页）

  paragraph = doc.CreateParagraph();
  paragraph.CreateRun().AddBreak(BreakType.PAGE);

创建表格

            var table = doc.CreateTable(行数, 列数);
            table.Width = 5000;

控制表格中列宽（这里需要注意，只设置一行的列宽一旦插入文字就会使设置的列宽失效，所以要把每一个单元格都要设置上）

for (int r = 0; r < 8; r++)
{
     SetCellWith(table.GetRow(r).GetCell(0), "600");
     SetCellWith(table.GetRow(r).GetCell(1), "1500");
     SetCellWith(table.GetRow(r).GetCell(2), "1500");
     SetCellWith(table.GetRow(r).GetCell(3), "600");
}

设置表格中单元格竖直居中

var rowcell = table.GetRow(r).GetCell(c);
rowcell.SetVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

设置单元格内容

            //table中的文字格式设置
            var para = new CT_P();
            var pCell = new XWPFParagraph(para, table.Body);
            pCell.Alignment = paragraphAlignment; //字体居中
            pCell.VerticalAlignment = TextAlignment.CENTER; //字体居中

            var r1c1 = pCell.CreateRun();
            r1c1.SetText(setText);
            r1c1.FontSize = 11;
            r1c1.SetFontFamily("宋体", FontCharRange.None); //设置雅黑字体
            pCell.SpacingAfterLines = 40;
            pCell.SpacingBeforeLines = 40;
            //放入单元格
            table.GetRow(4).GetCell(1).SetParagraph(pCell);

表格中换行（这个版本，网上其他的方法我都试了不好用最后参考的poi）

var run= paragraph.CreateRun();
run.SetText(contends[i]);
run.FontSize = 11;
run.SetFontFamily("宋体", FontCharRange.None); 
run.AddBreak(BreakType.TEXTWRAPPING);//换行

合并单元格

table.GetRow(rowIndex).MergeCells(fromCol, toCol);//合并列

//合并行
 public void MYMergeRows(XWPFTable table, int fromRow, int toRow, int colIndex)
        {

            for (int rowIndex = fromRow; rowIndex <= toRow; rowIndex++)
            {
                XWPFTableCell rowcell = table.GetRow(rowIndex).GetCell(colIndex);
                rowcell.SetVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);
                CT_Tc cttc = rowcell.GetCTTc();
                if (cttc.tcPr == null)
                {
                    cttc.AddNewTcPr();
                }
                if (rowIndex == fromRow)
                {
                    // The first merged cell is set with RESTART merge value  
                    rowcell.GetCTTc().tcPr.AddNewVMerge().val = ST_Merge.restart;
                }
                else
                {
                    // Cells which join (merge) the first one, are set with CONTINUE  
                    rowcell.GetCTTc().tcPr.AddNewVMerge().val = ST_Merge.@continue;
                }
            }

        }

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