ASP.NET 无效的 base64 输入输入不是有效的 Base-64 字符串

如何解决ASP.NET 无效的 base64 输入输入不是有效的 Base-64 字符串

我尝试将照片上传到我的控制器，但它显示此错误。但是，其他页面工作正常。我可以问为什么吗？下面是我的查看代码。

@using (Html.BeginForm("ManageProfile","Owner",FormMethod.Post,new { enctype = "multipart/form-data" }))
{
 <input type="file" id="profilePic" name="profilePic" />
}

另一个工作正常的视图

<div class="form-group">
                    @Html.LabelFor(model => model.photo3,htmlAttributes: new { @class = "control-label col-md-4" })
                    <div class="col-md-8">
                        <input type="file" id="photoupload3" name="photoupload3" />
                        <img id="photo3"  style="max-height:300px;max-width:300px;" />
                    </div>
                </div>

输入文件的名称是“profile1”。 在我的控制器中

[HttpPost]
        public ActionResult ManageProfile(Owner owner,HttpPostedFileBase profilePic)
        {
            string name = HttpContext.User.Identity.Name;
            var dbOwner = _context.OwnerDB.Find(owner.ownerID);
            dbOwner.contact = owner.contact;
            dbOwner.email = owner.email;
            dbOwner.Name = owner.Name;
            dbOwner.password = owner.password;
            if (profilePic != null)
            {
                dbOwner.profilePic = new byte[profilePic.ContentLength];
                profilePic.InputStream.Read(dbOwner.profilePic,profilePic.ContentLength);
            }
            _context.SaveChanges();
            return RedirectToAction("Index","Home",null);
        }

另一个控制器工作正常

[HttpPost]
        public ActionResult NewRoom(Room room,HttpPostedFileBase photoupload,HttpPostedFileBase photoupload2,HttpPostedFileBase photoupload3)
        {
            var ownerName = HttpContext.User.Identity.Name.ToString();
            Owner owner = _context.OwnerDB.Where(o => o.Name == ownerName).FirstOrDefault();
            room.ownerID = owner.ownerID;
            if (photoupload != null)
            {
                room.photo1 = new byte[photoupload.ContentLength];
                photoupload.InputStream.Read(room.photo1,photoupload.ContentLength);
            }

堆栈跟踪 stacktrace

查看完整代码

@using (Html.BeginForm("ManageProfile",new { enctype = "multipart/form-data" }))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Owner</h4>
        <hr />
        @Html.ValidationSummary(true,"",new { @class = "text-danger" })
        @Html.HiddenFor(model => model.ownerID)

        <div class="form-group">
            @Html.LabelFor(model => model.Name,htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name,new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name,new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.contact,htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.contact,new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.contact,new { @class = "text-danger" })
            </div>
        </div>



        <div class="form-group">
            @Html.LabelFor(model => model.email,htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.email,new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.email,new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.password,htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.password,new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.password,new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @*@Html.LabelFor(model => model.profilePic,htmlAttributes: new { @class = "control-label col-md-2" })*@
            <div class="col-md-10">

                <div class="col-md-10">
                    @{
                        if (Model.profilePic != null)
                        {
                            var base64 = Convert.ToBase64String(Model.profilePic);
                            var imgsrc = string.Format("data:image/gif;base64,{0}",base64);


                            <img src='@imgsrc' width="300" height="300" class="reel"
                                 data-image='@imgsrc'
                                 data-stitched="600"
                                 data-frames="30"
                                 data-frame="15"
                                 data-rows="1"
                                 data-row="1"
                                 data-loops="false"
                                 alt="@Model.Name" />
                        }

                    }

                    <input type="file" id="profilePic" name="profilePic" />
                </div>
            </div>
        </div>


        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Save" class="btn btn-default" />
            </div>
        </div>
    </div>
}