Word文档。被打开的XML损坏，找到并替换

Question

我正在使用C＃中的以下功能来查找和替换使用Open XML SDK的Word文档。

// 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，但是在上面替换文本为“＆”的情况下，打开文档时出错。

错误说：由于内容有问题，无法打开fileXYZ。详细信息：非法的名称字符。

当我在替换字符串中使用"<w:br/>"在字符串末尾插入新行时，此错误也持续存在。但是我通过在"<w:br/> ".

之后添加空格来消除错误

PS：“替换文本”中带有注释。

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);
        }
    }
}