Question

我找到了这个链接。 ASP.NET MVC download image rather than display in browser

我尝试了所有内容，我的操作方法将文件转储到视图中而不是下载。我希望能够单独下载该文件。感谢

        if (extension.ToLower() == ".docx")
        { // Handle *.jpg and   
            contentType = "application/docx";
        }
        else if (extension.ToLower() == ".jpg")
        {// Handle *.gif   
            contentType = "image/jpeg jpeg jpg jpe";
        }
        else if (extension.ToLower() == ".pdf")
        {// Handle *.pdf   
            contentType = "application/pdf";
        }
        Response.ContentType = contentType; // "application/force-download";
        Response.AddHeader("Content-Disposition", "attachment; filename=" + FileName);
        Response.WriteFile(FilePath );
        Response.Flush();
        Response.End();[![View after clicking download button][1]][1]

Answer 1

您的问题可能类似于：

How can I present a file for download from an MVC controller?

Returning a file to View/Download in ASP.NET MVC

您可以使用此代码从操作方法返回Response.WriteFile或FileResult，而不是使用FileStreamResult：

    if (extension.ToLower() == ".docx")
    { // Handle *.jpg and   
        contentType = "application/docx";
    }
    else if (extension.ToLower() == ".jpg")
    {// Handle *.gif   
        contentType = "image/jpeg jpeg jpg jpe";
    }
    else if (extension.ToLower() == ".pdf")
    {// Handle *.pdf   
        contentType = "application/pdf";
    }
    Response.ContentType = contentType; // "application/force-download";
    Response.AddHeader("Content-Disposition", "attachment; filename=" + FileName);

    // returning the file for download as FileResult
    // third input parameter is optional
    return File(FileName, contentType, Server.UrlEncode(Filename));

注意：正如Leo在https://stackoverflow.com/a/36776089/6378815中所说，如果响应标头已包含Response.AppendHeader部分，Content-Disposition方法可能会导致浏览器无法呈现文件内容。您可能需要尝试这种方式：

Response.Headers.Add("Content-Disposition", "attachment; filename=" + FileName);

补充参考：

Response.WriteFile() -- not working asp net mvc 4.5

我的MVC视图将文件内容显示在视图中，而不是作为文件下载

1 个答案: