OpenXml入门----给Word文档添加文字

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;

namespace AddStringToWord
{
    public class Program
    {
        public static void Main(string[] args)
        {
            AddString("Test.docx", "你好呀");
        }

        public static void AddString(string filePath, string str)
        {
            using (WordprocessingDocument doc = WordprocessingDocument.Open(filePath, true))
            {
                Paragraph paragraph = new Paragraph();
                Run run = new Run();

                RunProperties runProperties = new RunProperties(); //属性

                RunFonts fonts = new RunFonts() { EastAsia = "DFKai-SB" }; // 设置字体
                FontSize size = new FontSize() { Val = "52" }; // 设置字体大小
                Color color = new Color() { Val = "red" }; // 设置字体样式

                // 将样式添加到属性里面
                runProperties.Append(color);
                runProperties.Append(size);
                runProperties.Append(fonts);

                run.Append(runProperties);
                run.Append(new Text(str));
                paragraph.Append(run);
                doc.MainDocumentPart.Document.Body.Append(paragraph);
                doc.MainDocumentPart.Document.Save();
            }
        }
    }
}