Install-Package NPOI

using NPOI.OpenXmlFormats.Wordprocessing;

using NPOI.XWPF.UserModel;

using System.IO;

using System.Windows;

namespace NPOIDemo

{

    /// <summary>

    /// MainWindow.xaml 的交互逻辑

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

        }

        private void Button_Click(object sender, RoutedEventArgs e)

        {

            MemoryStream ms = new MemoryStream();

            XWPFDocument m_Docx = new XWPFDocument();

            m_Docx = CreatDocxTable();

            m_Docx.Write(ms);

            ms.Flush();

            SaveToFile(ms, "d:\\test.docx");

        }

        private XWPFDocument CreatDocxTable()

        {

            XWPFDocument m_Docx = new XWPFDocument();

            XWPFParagraph p0 = m_Docx.CreateParagraph();

            XWPFRun r0 = p0.CreateRun();

            r0.SetText("DOCX表");

            XWPFTable table = m_Docx.CreateTable(, );//创建一行3列表

            table.GetRow().GetCell().SetText("");

            table.GetRow().GetCell().SetText("");

            table.GetRow().GetCell().SetText("");

            XWPFTableRow m_Row = table.CreateRow();//创建一行

            m_Row = table.CreateRow();//创建一行

            m_Row.GetCell().SetText("");

            //合并单元格

            m_Row = table.InsertNewTableRow();//表头插入一行

            XWPFTableCell cell = m_Row.CreateCell();//创建一个单元格,创建单元格时就创建了一个CT_P

            CT_Tc cttc = cell.GetCTTc();

            CT_TcPr ctPr = cttc.AddNewTcPr();

            ctPr.AddNewGridspan();

            ctPr.gridSpan.val = "";//合并3列

            cttc.GetPList()[].AddNewPPr().AddNewJc().val = ST_Jc.center;

            cttc.GetPList()[].AddNewR().AddNewT().Value = "abc";

            XWPFTableRow td3 = table.InsertNewTableRow(table.Rows.Count - );//插入行

            cell = td3.CreateCell();

            cttc = cell.GetCTTc();

            ctPr = cttc.AddNewTcPr();

            ctPr.AddNewGridspan();

            ctPr.gridSpan.val = "";//合并3列

            cttc.GetPList()[].AddNewPPr().AddNewJc().val = ST_Jc.center;

            cttc.GetPList()[].AddNewR().AddNewT().Value = "qqq";

            //表增加行，合并列

            CT_Row m_NewRow = new CT_Row();

            m_Row = new XWPFTableRow(m_NewRow, table);

            table.AddRow(m_Row); //必须要！！！

            cell = m_Row.CreateCell();

            cttc = cell.GetCTTc();

            ctPr = cttc.AddNewTcPr();

            ctPr.AddNewGridspan();

            ctPr.gridSpan.val = "";//合并3列

            cttc.GetPList()[].AddNewPPr().AddNewJc().val = ST_Jc.center;

            cttc.GetPList()[].AddNewR().AddNewT().Value = "sss";

            //表未增加行，合并2列，合并2行

            //1行

            m_NewRow = new CT_Row();

            m_Row = new XWPFTableRow(m_NewRow, table);

            table.AddRow(m_Row);

            cell = m_Row.CreateCell();

            cttc = cell.GetCTTc();

            ctPr = cttc.AddNewTcPr();

            ctPr.AddNewGridspan();

            ctPr.gridSpan.val = "";//合并3列

            ctPr.AddNewVMerge().val = ST_Merge.restart;//合并行

            ctPr.AddNewVAlign().val = ST_VerticalJc.center;//垂直居中

            cttc.GetPList()[].AddNewPPr().AddNewJc().val = ST_Jc.center;

            cttc.GetPList()[].AddNewR().AddNewT().Value = "xxx";

            cell = m_Row.CreateCell();

            cell.SetText("ddd");

            //2行，多行合并类似

            m_NewRow = new CT_Row();

            m_Row = new XWPFTableRow(m_NewRow, table);

            table.AddRow(m_Row);

            cell = m_Row.CreateCell();

            cttc = cell.GetCTTc();

            ctPr = cttc.AddNewTcPr();

            ctPr.AddNewGridspan();

            ctPr.gridSpan.val = "";//合并3列

            ctPr.AddNewVMerge().val = ST_Merge.@continue;//合并行

            cell = m_Row.CreateCell();

            cell.SetText("kkk");

            ////3行

            //m_NewRow = new CT_Row();

            //m_Row = new XWPFTableRow(m_NewRow, table);

            //table.AddRow(m_Row);

            //cell = m_Row.CreateCell();

            //cttc = cell.GetCTTc();

            //ctPr = cttc.AddNewTcPr();

            //ctPr.gridSpan.val = "2";

            //ctPr.AddNewVMerge().val = ST_Merge.@continue;

            //cell = m_Row.CreateCell();

            //cell.SetText("hhh");  

            return m_Docx;

        }

        private void SaveToFile(MemoryStream ms, string fileName)

        {

            using (FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))

            {

                byte[] data = ms.ToArray();

                fs.Write(data, , data.Length);

                fs.Flush();

                data = null;

            }

        }

    }

}