C# 正在下载.xlsx文件，返回损坏的文件

我在C#中创建了以下按钮，当在界面中选择该按钮时，它将返回一个损坏的.xlsx文件。原始文件本身没有任何问题

protected void download_Data(object sender, EventArgs e)
{
    string strFullPath = Server.MapPath("~/Content/Demo User data file.xlsx");
    string strContents = null;
    System.IO.StreamReader objReader = default(System.IO.StreamReader);
    objReader = new System.IO.StreamReader(strFullPath);
    strContents = objReader.ReadToEnd();
    objReader.Close();

    string attachment = "attachment; filename=Demo User data file.xlsx";
    Response.ClearContent();
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    Response.AddHeader("content-disposition", attachment);
    Response.Write(strContents);
    Response.End();
}

试试这个代码

Response.ContentType = "application/vnd.ms-excel";
Response.AppendHeader("Content-Disposition", "attachment; filename=myfile.xlsx");
Response.BinaryWrite(File.ReadAllBytes(Server.MapPath("~/Content/Demo User data file.xlsx")));
Response.End();

这很有效

      protected void Button1_Click(object sender, EventArgs e)
    {

            string strFullPath = Server.MapPath("~/Content/Sample Contact.xlsx");




        string attachment = "attachment; filename=Sample_Contact.xlsx";
        Response.ClearContent();
       Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        Response.AddHeader("content-disposition", attachment);
        Response.BinaryWrite(File.ReadAllBytes(strFullPath));

        Response.End();
    }

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尝试刷新并关闭HttpResponse请求

response.OutputStream.Flush();
response.OutputStream.Close();
response.Flush();
response.Close();

---

为什么不简单地调用映射的文件路径呢？double/application是一个错误。在将其调整为：application/vnd.openxmlformats-officedocument.spreadsheetml.sheet之后，我仍然得到相同的损坏excel文件。您所说的调用响应.Writefile是什么意思？有什么问题吗？我替换了“application/vnd.openxmlformats-officedocument.spreadsheetml.sheet”；使用“application/vnd.ms excel”。这没有帮助..我必须为文件指定一些内容吗？您必须添加“using System.IO；”谢谢！！这很有帮助。