前台：

<div class="control-group">
<label class="control-label">文档文件</label>
<div class="controls">
@*<div id="jquery-wrapped-fine-uploader"></div>*@
<input type="file" name="upfile" id="Files" multiple="multiple" accept="image/*,application/*,text/*,video/*" />
@Html.TextBoxFor(p => p.DocumentMetadata_RemotePath, new { @type = "hidden" })
</div>
</div>

js：

$("#Files", container).change(function (e) {
var target = $(e.target).find("#Files");
$.ajax({
type: "POST",
url: "/MetaData/Upload",
data: null,
beforeSend: function () {
target.prop("disabled",true);
},
success: function (response) {
if (response.success) {
$("#Files", container).replaceWith("<span>" + response.data[0] + "</span>");
$("#metadataform input[name='DocumentMetadata_RemotePath']", container).val(response.data[0]);

}
}

});
});

后台处理：

[HttpPost]
public ActionResult Upload()
{
try
{
string path = ControllerContext.HttpContext.Server.MapPath("~/temp");
string childpath = path + "\\" + currentUser.UserGroup.Name;
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
if (!Directory.Exists(childpath))
{
Directory.CreateDirectory(childpath);
}
Regex re = new Regex(@"\.([^\.]+)$");

List<string> pathlist = new List<string>();

//Request.Files.AllKeys.ToList().ForEach(p =>
//{
// var ext = re.Match(Request.Files[p].FileName).Groups[0].Value;
// var name = DateTime.Now.Ticks.ToString() + "_" + new Random().Next(10000, 100000).ToString();
// Request.Files[p].SaveAs(childpath + "\\" + name + ext);
// pathlist.Add(@"/temp/" + currentUser.UserGroup.Name + "/" + name + ext);
//});
for (int i = 0; i < Request.Files.Count; i++)
{
var ext = re.Match(Request.Files[i].FileName).Groups[0].Value;
var name = DateTime.Now.Ticks.ToString() + "_" + new Random().Next(10000, 100000).ToString();
Request.Files[i].SaveAs(childpath + "\\" + name + ext);
pathlist.Add(@"/temp/" + currentUser.UserGroup.Name + "/" + name + ext);
}
return Json(new { success = true, data = pathlist });
}
catch (Exception)
{
return Json(new { success = false });
}
}