OpenXML 多行字符串替换(正则表达式)显示为一长行

OpenXML multiline string replace (regex) showing as one long line

我有一个带有“@Address”的 docx 文档-我可以用这个替换它:

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("@Address");
    docText = regexText.Replace(docText, multiLineString);

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

此处可用https://msdn.microsoft.com/en-us/library/office/bb508261.aspx

问题是字符串在一行中返回。

我是不是做错了什么,或者是否有其他方法可以用来将我的文本替换为多行文本?

最简单的方法是将换行符替换为 Break (<w:br/>) 文字处理元素:

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("@Address");

        string multiLineString = "Sample text.\nSample text.";
        multiLineString = multiLineString.Replace("\r\n", "\n")
                                         .Replace("\n", "<w:br/>");

        docText = regexText.Replace(docText, multiLineString);

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

另请注意,还有一些其他特殊字符需要替换为相应的文字处理元素。
例如,<w:tab/><w:noBreakHyphen/><w:softHyphen/><w:sym w:font="X" w:char="Y"/>