Question

我有以下方法，它将HTML转换为Word文档并将其作为下载发送给用户。

public static void HtmlToWordDownload(string HTML, string FileName, string title = "", bool border = false)
{
    lock (LockMulti)
    {
        string strBody = string.Empty;
        strBody = @"<html xmlns:o='urn:schemas-microsoft-com:office:office' " +
        "xmlns:w='urn:schemas-microsoft-com:office:word'" +
        "xmlns='http://www.w3.org/TR/REC-html40'>" +
        "<head><title>:" + title + "</title>" +
         "<!--[if gte mso 9]><xml><w:WordDocument><w:View>Print</w:View><w:Zoom>100</w:Zoom>" +
         "<w:DoNotOptimizeForBrowser/></w:WordDocument></xml><![endif]-->" +
         "<style> @page Section1 {size:8.27in 11.69in; mso-first-footer:ff1; mso-footer: f1; mso-header: h1; " +
         ((border == true) ? "border:solid navy 2.25pt; padding:24.0pt 24.0pt 24.0pt 24.0pt; " : "") +
         "margin:0.6in 0.6in 0.6in 0.6in ; mso-header-margin:.1in; " +
         "mso-footer-margin:.1in; mso-paper-source:0;} " +
         "div.Section1 {page:Section1;} p.MsoFooter, li.MsoFooter, " +
         "div.MsoFooter{margin:0in; margin-bottom:.0001pt; " +
         "mso-pagination:widow-orphan; tab-stops:center 3.0in right 6.0in; " +
         "font-size:12.0pt; font-family:'Arial';} " +
         "p.MsoHeader, li.MsoHeader, div.MsoHeader {margin:0in; " +
         "margin-bottom:.0001pt; mso-pagination:widow-orphan; tab-stops:center " +
         "3.0in right 6.0in; font-size:12.0pt; font-family:'Arial';}--></style></head> ";
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Charset = "";
        HttpContext.Current.Response.ContentType = "application/vnd.ms-word";
        HttpContext.Current.Response.AddHeader("Content-Disposition", "inline;filename=" + FileName + ".doc");
        StringBuilder htmlCode = new StringBuilder();
        htmlCode.Append(strBody);
        htmlCode.Append("<body><div class=Section1>");
        htmlCode.Append(HTML);
        htmlCode.Append("</div></body></html>");
        HttpContext.Current.Response.Write(htmlCode.ToString());
        HttpContext.Current.Response.End();
        HttpContext.Current.Response.Flush();
    }
}

现在我不想直接将其下载给用户，我想首先将其保存在我服务器的本地文件夹中，然后将其下载。我该怎么做？

Answer 1

您可能会尝试在执行htmlCode.ToString（）时提供您生成的文件：

Response.Clear(); 
Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name); 
Response.AddHeader("Content-Length", file.Length.ToString()); 
Response.ContentType = "application/octet-stream"; 
Response.WriteFile(file.FullName); 
Response.End();

另一种方法是保存文件并将其作为字节数组读取并按如下方式提供：

byte[] Content= File.ReadAllBytes(FilePath); //missing ;
Response.ContentType = "text/csv";
Response.AddHeader("content-disposition", "attachment; filename=" + fileName + ".csv");
Response.BufferOutput = true;
Response.OutputStream.Write(Content, 0, Content.Length);
Response.End();

或

string filename="Connectivity.doc";

if (filename != "")

{

          string path = Server.MapPath(filename);

          System.IO.FileInfo file = new System.IO.FileInfo(path);

          if (file.Exists)

          {

                   Response.Clear();

                   Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);

                   Response.AddHeader("Content-Length", file.Length.ToString());

                   Response.ContentType = "application/octet-stream";

                   Response.WriteFile(file.FullName);

                   Response.End();

          }

          else

          {

                   Response.Write("This file does not exist.");

          }

}

，否则

在某个临时路径上将word / pdf文件保存在服务器上后，可以使用HTTP Handler（.ashx）下载文件，如下所示：

ExamplePage.ashx：

public class DownloadFile : IHttpHandler { public void ProcessRequest(HttpContext context) { System.Web.HttpResponse response = System.Web.HttpContext.Current.Response; response.ClearContent(); response.Clear(); response.ContentType = "text/plain"; response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + ";"); response.TransmitFile(Server.MapPath("FileDownload.csv")); response.Flush(); response.End(); } public bool IsReusable { get { return false; } } }

然后，您可以通过按钮单击事件处理程序调用HTTP Handler，如下所示：

标记：

<asp:Button ID="btnDownload" runat="server" Text="Download File" OnClick="btnDownload_Click"/>

代码隐藏：

protected void btnDownload_Click(object sender, EventArgs e) { Response.Redirect("PathToHttpHandler/DownloadFile.ashx"); }

将参数传递给HTTP处理程序：

您可以简单地将查询字符串变量附加到Response.Redirect（），如下所示：

Response.Redirect("PathToHttpHandler/DownloadFile.ashx?yourVariable=yourValue");

然后在实际的处理程序代码中，您可以使用HttpContext中的Request对象来获取查询字符串变量值，如下所示：

System.Web.HttpRequest request = System.Web.HttpContext.Current.Request; string yourVariableValue = request.QueryString["yourVariable"]; // Use the yourVariableValue here

注意 - 通常将文件名作为查询字符串参数传递给用户建议文件实际是什么，在这种情况下，他们可以使用另存为覆盖该名称值...

将生成的文件保存在服务器上，而不是在C＃中将其作为下载提供给用户

1 个答案: