Input设置只读属性

 <div class="form-group">
            <label for="conpanyName" class="col-sm-2 control-label col-sm-offset-2">公司名称</label>
            <div class="col-sm-4">
                <input type="text" class="form-control" id="realityName" value="@Model.SponsorName" readonly="readonly">
            </div>
        </div>

     @Html.TextAreaFor(p => p.VolunteerSelfDescription, new
                               {
                                   @readonly = "readonly",
                                   @value = @Model.VolunteerSelfDescription
                               })