从StreamWriter下载文件

Question

如何从StreamWriter获取byte[]并使用写入Streamwriter的内容下载文件？

string document = @"C:\TestArea\Destination\SUP000011\ATM-1B4L2KQ0ZE0-0001\Sample.docx";
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("Hello world!");
    docText = regexText.Replace(docText, "Hi Everyone!");

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

下载代码段-

  byte[] bytearraydata = Encoding.ASCII.GetBytes(doctext);
 if (bytearraydata != null)
                {
                    Response.ContentType = "Application/msword";
                    Response.AppendHeader("Content-disposition",
                            "attachment; filename=" + "Sample.docx");
                    Response.AppendHeader("content-length", bytearraydata.Length.ToString());
                    Response.BinaryWrite(bytearraydata);
                    Response.End();
                }

Answer 1

尽管名称StreamWriter实际上是写字符，而不是字节。如果要写入未编码的字节，请使用BinaryWriter。

要读取未编码的字节，请使用BinaryReader。