C# 使用NPOI生成Word文档（按照模板）(2)-木庄网络博客

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三、表格处理（XWPFTable table）
doc.Tables 获取文档里的所有的表格对象；
这里有必要多一嘴，doc.Tables获取的只是Word中最外层的表格，不包含嵌套内层的。
获取嵌套单元格可使用cell.Tables；
（一）表格行处理（XWPFTableRow row）
row.Rows 获取表格所有行；
（二）表格单元格处理（XWPFTableCell cell）
row.GetTableICells() ;获取表格行的所有单元格；
获取到单元格之后就可以获取单元格里的文本段落（Paragraphs）并且进行文本替换
（三）水平合并行单元格

CT_Tc cttcofRowThird = cell.GetCTTc();
CT_TcPr ctProfRowThird = cttcofRowThird.AddNewTcPr();
ctProfRowThird.gridSpan = new CT_DecimalNumber();
ctProfRowThird.gridSpan.val = num.ToString();//合并num列

（四）垂直合并列单元格

List<XWPFTableRow> rows所有要合并的行的XWPFTableRow对象集合。
 
XWPFTableCell cellFirstofThird = 第一行要合并的单元格对象;
CT_Tc cttcFirstofThird = cellFirstofThird.GetCTTc();
CT_TcPr ctPrFirstofThird = cttcFirstofThird.AddNewTcPr();
ctPrFirstofThird.AddNewVMerge().val = ST_Merge.restart;//开始合并行
ctPrFirstofThird.AddNewVAlign().val = ST_VerticalJc.center;//垂直
cttcFirstofThird.GetPList()[0].AddNewPPr().AddNewJc().val = ST_Jc.center;
for (int i = 1; i < rows.Count; i++)
{
    XWPFTableCell cellfirstofRow = 第i行要合并的单元格对象;
    CT_Tc cttcfirstofRow = cellfirstofRow.GetCTTc();
    CT_TcPr ctPrfirstofRow = cttcfirstofRow.AddNewTcPr();
    ctPrfirstofRow.AddNewVMerge().val = ST_Merge.@continue;//继续合并行
    ctPrfirstofRow.AddNewVAlign().val = ST_VerticalJc.center;//垂直
}

四、图片处理
2.3.0版本的NPOI的图片插入没有集成xml文件的修改所以需要手写代码编入（当然，我是拷过来的）。

using (FileStream fsImg = new FileStream(图片路径, FileMode.Open, FileAccess.Read, FileShare.None))
{
var picID = doc.AddPictureData(fsImg, (int)NPOI.XWPF.UserModel.PictureType.JPEG);
string picXml = ""
+ "      <pic:pic xmlns:pic=\"http://schemas.openxmlformats.org/drawingml/2006/picture\" xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">"
                    + "         <pic:nvPicPr>" + "            <pic:cNvPr id=\""
                    + "0"
                    + "\" name=\"Generated\"/>"
                    + "            <pic:cNvPicPr/>"
                    + "         </pic:nvPicPr>"
                    + "         <pic:blipFill>"
                    + "            <a:blip r:embed=\""
                    + id
                    + "\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\"/>"
                    + "            <a:stretch>"
                    + "               <a:fillRect/>"
                    + "            </a:stretch>"
                    + "         </pic:blipFill>"
                    + "         <pic:spPr>"
                    + "            <a:xfrm>"
                    + "               <a:off x=\"0\" y=\"0\"/>"
                    + "               <a:ext cx=\""
                    + width
                    + "\" cy=\""
                    + height
                    + "\"/>"
                    + "            </a:xfrm>"
                    + "            <a:prstGeom prst=\"rect\">"
                    + "               <a:avLst/>"
                    + "            </a:prstGeom>"
                    + "         </pic:spPr>"
                    + "      </pic:pic>";
                XWPFParagraph par = cell.AddParagraph();//创建段落对象（可以在doc加也可在cell加）
                par.Alignment = ParagraphAlignment.CENTER;//居中
                XWPFRun run = par.CreateRun();
                CT_Inline inline = run.GetCTR().AddNewDrawing().AddNewInline();
                inline.graphic = new CT_GraphicalObject
                {
                    graphicData = new CT_GraphicalObjectData
                    {
                        uri = "http://schemas.openxmlformats.org/drawingml/2006/picture"
                    }
                };
                try
                {
                    inline.graphic.graphicData.AddPicElement(picXml);
                }
                catch (XmlException xe)
                {
                    throw xe;
                }
                NPOI.OpenXmlFormats.Dml.WordProcessing.CT_PositiveSize2D extent = inline.AddNewExtent();
                extent.cx = width;
                extent.cy = height;
                NPOI.OpenXmlFormats.Dml.WordProcessing.CT_NonVisualDrawingProps docPr = inline.AddNewDocPr();
                docPr.id = 1;
                docPr.name = "Image" + id;
}