<form name="frmInput" id="frmInput" method="post" action="@Url.Action(ViewContext.RouteData.Values["Action"].ToString())" enctype="multipart/form-data" >

   <div class="form-group col-md-6">

    <label class="control-label col-md-4">

        图片一

    </label>

    <div class="col-md-8 input-group">

        <ul class="list-unstyled">

            <li style="float: left; width: 180px;position:relative;">

                <img src="@Url.Content(Model.MDetailImageUrl)" alt="图片" width="140" />

                <input class="input_file" id="TDetailImageUrl" type="file" name="TDetailImageUrl"  tid="5" onchange="ImagePreview(this)" />

            </li>

        </ul>

    </div>

</div>

<div class="form-group col-md-6">

    <label class="control-label col-md-4">

        图片二

    </label>

    <div class="col-md-8 input-group">

        <ul class="list-unstyled">

            <li style="float: left; width: 180px;position:relative;">

                <img src="@Url.Content(Model.MDetailImageUrl)" alt="图片" width="140" />

                <input class="input_file" id="MDetailImageUrl" type="file" name="MDetailImageUrl"  tid="6" onchange="ImagePreview(this)" />

            </li>

        </ul>

    </div>

</div>

<input type="button" value="保存" onclick="Input.Save(this)" class="btn-8" />

</from>

//图片预览

    function ImagePreview(e) {

        if ($(e).val() == "") {

            alert("请选择一个图片文件，再点击上传。");

            return;

        }

        $(e).closest("form").ajaxSubmit({

            url: $("#ImagePreviewUrl").val() + "?name=" + $(e).attr("name"),

            success: function (data, status) {

                if (status == "success" && data != "") {

                    $(e).parent().children("img").attr("src", data);

                }

                else {

                    alert("图片格式不对");

                }

            }

        });

    }

public string ImagePreview(string name)

        {

            int fileIndex = ;

            string result="";

            if (Request.Files.Count > )

            {

                for (int i = ; i < Request.Files.Count; i++)

                {

                    if (!string.IsNullOrWhiteSpace(Request.Files[i].FileName))

                    {

                        string inputName = Request.Files.AllKeys[i];

                        if (!string.IsNullOrWhiteSpace(inputName) && name == inputName)

                        {

                            fileIndex = i;

                            break;

                        }

                    }

                }

                result = ImagesAPPI.PreviewDataForSingle(Request.Files[fileIndex], , );

            }

            return result;

        }

/// <summary>

        /// 上传图片预览

        /// </summary>

        /// <param name="files">文件数据</param>

        /// <param name="width">宽度</param>

        /// <param name="height">高度</param>

        /// <returns>返回图片预览数据</returns>

        public static string PreviewDataForSingle(HttpPostedFileBase file, int width, int height)

        {

            if (file.ContentLength >  && file.ContentType.IndexOf("image/") >= )

            {

                return "data:image/jpeg;base64," + Convert.ToBase64String(ResizeImg(file.InputStream, width, height).GetBuffer());

            }

            return "";

        }

/// <summary>

        /// 图片转为base64编码

        /// </summary>

        /// <param name="Imagefilename">图片绝对路径</param>

        /// <returns></returns>

        public static string ImgToBase64String(string Imagefilename)

        {

            if(string.IsNullOrWhiteSpace(Imagefilename)) return "";

            return "data:image/jpeg;base64," + Convert.ToBase64String(System.IO.File.ReadAllBytes(Imagefilename)); ;

        }