Question

以下是AJAX发送POST请求的代码

基本上我想从页面加载的某个位置（完整路径）下载文件

但是当我调用此页面时，没有错误被抛出页面成功调用即使我得到file.Exist = true，也会创建响应，但在浏览器上没有任何反应我期待文件下载对话框。在进一步调试时，我在Response对象中发现异常 Headers ='Response.Headers'引发了'System.PlatformNotSupportedException'类型的异常 此操作需要IIS集成管道模式

我在localhost（visual studio开发服务器）中运行此网页。 .net4和VS2010

页面加载代码：

  protected void Page_Load(object sender, EventArgs e)
    {


        string path = Request.Form["path"];

       // string reportName=path.Substring( path.LastIndexOf("\\") ,path.Length);
        DAL.IO_helper i = new DAL.IO_helper();
        string fullpath = i.GetReportsPath() + path;

        FileInfo report = new FileInfo(fullpath);

        if (report.Exists)
        {


            Response.ClearContent();

            Response.ClearHeaders();
            // Add the file name and attachment, which will force the open/cancel/save dialog box to show, to the header
            Response.AddHeader("Content-Disposition", "attachment; filename=" + report.Name);

            // Add the file size into the response header
            Response.AddHeader("Content-Length", report.Length.ToString());

            // Set the ContentType
            Response.ContentType = ReturnExtension(report.Extension.ToLower());

            // Write the file into the response (TransmitFile is for ASP.NET 2.0. In ASP.NET 1.1 you have to use WriteFile instead)
            Response.TransmitFile(report.FullName);

            //Transmit file

            Response.Flush();

            // End the response
            Response.End();

        }
        else
        {
            Response.ClearContent();
            // End the response
            Response.End();
        }


    }

功能

 private string ReturnExtension(string fileExtension)
        {
            switch (fileExtension)
            {

                case ".txt":
                    return "text/plain";
                case ".dat":
                    return "text/plain";
                case ".doc":
                    return "application/ms-word";
                case ".docx":
                    return "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
                case ".zip":
                    return "application/zip";
                case ".xls":
                    return "application/vnd.ms-excel";
                case ".xlsx":
                    return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                case ".csv":
                    return "application/vnd.ms-excel";
                case ".pdf":
                    return "application/pdf";
                case ".xml":
                    return "application/xml";
                case ".sdxl":
                    return "application/xml";
                default:
                    return "application/octet-stream";
            }
        }

Answer 1

简短的回答是，您无法通过WebDev开发Web服务器执行此操作，因为它不支持集成管道模式。解决方案是使用IIS Express来托管页面。您仍然可以获得完整的调试集成等等。

方便的链接：

Enabling IIS Express support in VS2010
Visual Studio 2010 SP1 for Web Developers（特别是IIS Express 7.5 Support部分）
Setting up Visual Studio 2010 and IIS Express

或者只是谷歌VS2010 IIS Express获取任何其他有用的提示。

使用ASP.net c＃下载文件时出错

1 个答案: