c# - Word 文档。被开放的 XML 查找和替换损坏

Question

我在 C# 中使用以下函数使用 open xml sdk 在 word doc 中查找和替换。

// To search and replace content in a document part.
public static void SearchAndReplace(string document)
{
    using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(document, true))
    {
        string docText = null;
        using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
        {
            docText = sr.ReadToEnd();
        }

        Regex regexText = new Regex("Findme");
        docText = regexText.Replace(docText, "Before *&* After"); // <-- Replacement text

        using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream(FileMode.Create)))
        {
            sw.Write(docText);
        }
    }
}

代码在大多数情况下都可以正常工作，但在上面替换文本有“&”的情况下，打开文档时会出错..

错误说：文件XYZ无法打开，因为内容有问题。详细信息：非法名称字符。

"<w:br/>"当我在替换字符串中使用以在字符串末尾插入新行时，此错误也仍然存在 。但是我通过在之后添加一个空格来消除错误"<w:br/> ".

PS：“替换文本”在注释中注明。

Answer 1

// To search and replace content in a document part.

public static void SearchAndReplace(string document)
{
    using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(document, true))
    {
        string docText = null;
        using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream()))
        {
            docText = sr.ReadToEnd();
        }

        Regex regexText = new Regex("Findme");
        docText = regexText.Replace(docText, new System.Xml.Linq.XText("Before *&* After").ToString()); // when we replace string with "&" we need to convert like this

        using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream(FileMode.Create)))
        {
            sw.Write(docText);
        }
    }
}