使用C#代码将Word文本全部转换为大写

PM> Install-Package Spire.Doc

using System;
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;

namespace changecase
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个新文档并加载文件
            string input = @"D:\testp\test.docx"; ;
            Document doc = new Document();
            doc.LoadFromFile(input);
            TextRange textRange;
            //获取第二段并将其字符设置为全部大写
            Paragraph para1 = doc.Sections[0].Paragraphs[2];

            foreach (DocumentObject obj in para1.ChildObjects)
            {
                if (obj is TextRange)
                {
                    textRange = obj as TextRange;
                    textRange.CharacterFormat.AllCaps = true;
                }
            }

            //获取第三段并将其字符设置为小型大写字母
            Paragraph para2 = doc.Sections[0].Paragraphs[3];
            foreach (DocumentObject obj in para2.ChildObjects)
            {
                if (obj is TextRange)
                {
                    textRange = obj as TextRange;
                    textRange.CharacterFormat.IsSmallCaps = true;
                }
            }

            //将文档保存为新的 Word 文件
            string output = "ChangeCase.docx";
            doc.SaveToFile(output, FileFormat.Docx2013);
        }
    }
}