.net MVC+Bootstrap下使用localResizeIMG上传图片

<div class="form-group">
 <label class="col-sm-6 control-label" for="inputfile">维修照片上传</label>
 <div class="col-sm-6 ">
 <div style="background:url(../../fonts/add.png) no-repeat;width:151px;height:150px;float:left;" id="div1">
 <input type="file" accept="image/*" id="file" class="selectinput" style="width:151px;height:150px;opacity:.01">
 </div>

 </div>
 </div>

$("#file").localresizeimg({
 width: 400,
 //height: 200,
 quality: 1,
 success: function (result) {
 var img = new image();
 img.src = result.base64;

 //$("body").append(img);
 $("#odd").append(img); //呈现图像(拍照結果)
 $.ajax({
 url: "/home/uploadimg",
 type: "post",
 data: { "formfile": result.clearbase64, "repairnum": $('#repairnum').val()},
 datatype: "html",
 timeout: 1000,
 error: function () {
 alert("ajax error");
 },
 success: function (data) {
 //alert("uploads success~")
 }
 });
 }
 });

[httppost]
 public actionresult uploadimg()
 {
 var file = request["formfile"];
 var id = request["repairnum"];

 string filename = "1.jpeg";
 string filepath = server.mappath("~/upload/" + filename);

 try
 {
 base64stringtoimage(file, filepath);
 //upimg.saveas(filephysicalpath);
 //session["imgpath"] = path;
 //base64stringtoimage(file,);
 return content("上传成功");
 }
 catch
 {
 return content("上传异常 ！");

 }
 }

 protected void base64stringtoimage(string strbase64, string filepath)
 {
 try
 {
 byte[] arr = convert.frombase64string(strbase64);
 memorystream ms = new memorystream(arr);
 system.drawing.bitmap bmp = new system.drawing.bitmap(ms);
 //bmp.dispose(); 
 bmp.save(filepath, system.drawing.imaging.imageformat.jpeg);
 ms.close();
 }
 catch (exception ex)
 {
 }
 }