C# FilePathResult不适用于swf文件？

我正在使用FileResult显示网站中的文件，如下所示：

public ActionResult GetSwf(long id = 0)
{
    if (id <= 0) return null;
    Attachment attachment = Service.GetAttachmentById(id);
    if (attachment == null) return null;

    string filename = attachment.Name;
    string mimeType = "application/x-shockwave-flash";
    string absoluteFilePath = UploadedPaths.GetAbsolutePath(attachment.Path);

    return File(absoluteFilePath, mimeType, filename);
}

public ActionResult GetSwf(long id = 0)
{
    if (id <= 0) return null;
    Attachment attachment = Service.GetAttachmentById(id);
    if (attachment == null) return null;

    string filename = attachment.Name;
    string mimeType = "application/x-shockwave-flash";
    string absoluteFilePath = UploadedPaths.GetAbsolutePath(attachment.Path);

    byte[] bytes = System.IO.File.ReadAllBytes(absoluteFilePath);
    return new FileContentResult(bytes, mimeType);
}

以下标记不起作用，浏览器将下载文件而不是显示它

<object type="application/x-shockwave-flash" width="220" height="166" data="File/GetSwf/1232" class="flash-object" data-name="ads-file"></object>

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出了什么问题，我该怎么解决呢？

最终，我找到了解决办法。 我不得不改变行动如下：

public ActionResult GetSwf(long id = 0)
{
    if (id <= 0) return null;
    Attachment attachment = Service.GetAttachmentById(id);
    if (attachment == null) return null;

    string filename = attachment.Name;
    string mimeType = "application/x-shockwave-flash";
    string absoluteFilePath = UploadedPaths.GetAbsolutePath(attachment.Path);

    return File(absoluteFilePath, mimeType, filename);
}

public ActionResult GetSwf(long id = 0)
{
    if (id <= 0) return null;
    Attachment attachment = Service.GetAttachmentById(id);
    if (attachment == null) return null;

    string filename = attachment.Name;
    string mimeType = "application/x-shockwave-flash";
    string absoluteFilePath = UploadedPaths.GetAbsolutePath(attachment.Path);

    byte[] bytes = System.IO.File.ReadAllBytes(absoluteFilePath);
    return new FileContentResult(bytes, mimeType);
}

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你检查过浏览器插件吗？安装flash插件并重新检查我在chrome 38中有最新版本的flash Player。尝试将响应标头的内容处置属性模式设置为“内联”，看看这是否有区别。当返回FileResult时，此行为下载文件是正常的。。。您可以返回jsonnew{FilePath=}；