将以下 OpenXML 命名空间添加到你的类中

Created: November-22, 2018

using System;
using System.Collections.Generic;
using System.Linq;
using DocumentFormat.OpenXml;
using A = DocumentFormat.OpenXml.Drawing;
using DW = DocumentFormat.OpenXml.Drawing.Wordprocessing;
using PIC = DocumentFormat.OpenXml.Drawing.Pictures;
using DocumentFormat.OpenXml.Drawing.Wordprocessing;
using Wps = DocumentFormat.OpenXml.Office2010.Word.DrawingShape;