file upload does not work in IE 8, IE 9 - asp.net-mvc-3

Question

i have the following code to upload a file, which runs without error in mozilla firefox and google chrome but gives error in IE 8. Please provide solution. This is my view-
#using (Html.BeginForm(null, null, FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<fieldset>
<div class="input_panelleft">
<div class="input_panellabel">
#Html.LabelFor(model => model.DrawingName)
</div>
<div class="input_panelinput">
#Html.EditorFor(model => model.DrawingName)
</div>
<div class="input_panellabel">
Upload Drawing
</div>
<div class="input_panelinput">
<input type="file" name='file' id='file' />
</div>
<div class="center">
<input type="submit" value="Upload" />
</div>
</div>
</fieldset>
}
and following code in controller-
[HttpPost]
public ActionResult Create(DrawingDocumentsModel model, HttpPostedFileBase file)
{
if (ModelState.IsValid)
{
if (file != null)
{
var documentNameParts = file.FileName.Split('.');
var documentExtension = documentNameParts.Last();
var documentNameOnly = String.Join(".", documentNameParts.Take(documentNameParts.Length - 1));
var filename = documentNameOnly + "." + documentExtension;
if (_drawingDocumentService.IsDrawingNameAvailable(filename))
{
var path = Server.MapPath("~/Uploads/");
var Filepath = Path.Combine(path, filename);
file.SaveAs(Filepath);
var drawingDocuments = new DrawingDocuments();
drawingDocuments.ProjectId = 1;
drawingDocuments.ProjectName = "Drawing Tag";
drawingDocuments.FileName = filename;
drawingDocuments.UploadedDate = System.DateTime.Now;
drawingDocuments.UploadedBy = _workContext.CurrentUserId;
if (model.DrawingName == "" || model.DrawingName == null)
{
ModelState.AddModelError("CustomError", "Please Enter Drawing Name");
}
else
{
drawingDocuments.DrawingName = model.DrawingName;
drawingDocuments.Path = ("/Uploads/" + filename);
_drawingDocumentService.InsertDrawingDocument(drawingDocuments);
return RedirectToAction("DrawingDocuments");
}
}
else
{
ModelState.AddModelError("CustomError", "Drawing With Same File Name Already Available");
}
}
else
{
ModelState.AddModelError("CustomError", "Please Select Drawing");
}
}
return View(model);
}