ASP.net下载并保存用户文件夹文件

问题描述

我想将文件保存到用户的电脑，但我不能做到这一点。
因为正试图保存在C文件中的某个地方这种方法可以让错误。我的理解是不是approriate。我想将文件保存在下载文件夹或提示有一个文件对话框中的用户。

I am trying to save a file to the user pc but I am not able to do it.This method gives error since is trying to save the file in C somewhere. I understand it is not approriate. I would like to save the file in the download folder or prompt the user with a file dialog.

void SaveReport(Telerik.Reporting.Report report, string fileName)
{
    ReportProcessor reportProcessor = new ReportProcessor();
    Telerik.Reporting.InstanceReportSource instanceReportSource = new Telerik.Reporting.InstanceReportSource();
    instanceReportSource.ReportDocument = report;
    RenderingResult result = reportProcessor.RenderReport("PDF", instanceReportSource, null);

    using (FileStream fs = new FileStream(fileName, FileMode.Create))
    {
        fs.Write(result.DocumentBytes, 0, result.DocumentBytes.Length);
    }
}

我怎样才能将文件保存在用户计算机的下载文件夹或提示的FileDialog允许用户选择目的地？

How can I save the file in the download folder of the user machine or prompt a filedialog to allow the user to choose the destination?

推荐答案

您不能强制文件下载到的地方。

You can't force the place the file is downloaded to.

在您的code，你不应该写入文件，但对<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.htt$p$psponse.outputstream%28v=vs.110%29.aspx\"相对=nofollow> 的OutputStream 从响应。

In your code, you shouldn't write to file, but to the OutputStream from the response.

RenderingResult result = reportProcessor.RenderReport("PDF", instanceReportSource, null);

HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=\"file.pdf\"");
HttpContext.Current.Response.OutputStream.Write(result.DocumentBytes, 0, result.DocumentBytes.Length);

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