也许这将要给你的理念是：

maybe this will give u the idea:

查看

<form enctype="multipart/form-data" method="post" action="/Media/Upload/Photo">
    <input type="file" name="file" id="file" /> 
    <input type="submit"  name= "submitImport" value="Upload" />
    <input type="submit" name = "submitExport"  value="Download" />
</form>

控制器：

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Action (FormCollection formCollection)
        {
            if (formCollection["submitImport"] != null)
            {
                return Import(formCollection);
            }
             if (formCollection["submitExport"] != null)
            {
                return Export(formCollection);
            }
        }

在导出和导入是appropriateactions

the Export and Import are the appropriateactions