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我有了一個byte []屬性視圖模型，它在用戶創建一個新的項目，在此時刻需要的是我的模型：必需的字節[]在視圖模型
public class ClassViewModel2
{
public int ClassId { get; set; }
[Required(ErrorMessage = "This field is required to create a Class")]
public string Name { get; set; }
[Required(ErrorMessage = "This field is required to create a Class")]
public string Description { get; set; }
[Required(ErrorMessage = "This field is required to create a Class")]
public byte[] ThumbNail { get; set; }
[Required(ErrorMessage = "This field is required to create a Class")]
public byte[] MainImage { get; set; }
}
但如果該字節[]是null它將繼續創建該項目，無論如何，它與其他屬性正常工作，所以我不知道如何包括此驗證。
這是我編輯的Controler：
[HttpPost]
[ValidateInput(false)]
[Authorize(Roles = Constants.Roles.Admins)]
public virtual ActionResult Edit(ClassViewModel classdetail, HttpPostedFileBase fmainimage,
HttpPostedFileBase fthumbnail)
{
UserProfile up = GetUserProfile();
if (up != null)
{
if (ModelState.IsValid)
{
var mclass =
(from c in _db.Classes where c.ClassId == classdetail.ClassId select c).FirstOrDefault() ??
new Class();
Mapper.Map(classdetail, mclass, typeof(ClassViewModel), typeof(Class));
var mclass2 =
(from c in _db.Classes where c.ClassId == classdetail.ClassId select c).FirstOrDefault() ??
new Class();
Mapper.Map(classdetail, mclass2, typeof(ClassViewModel2), typeof(Class));
if (fmainimage != null)
{
int length = fmainimage.ContentLength;
mclass.MainImage = new byte[length];
fmainimage.InputStream.Read(mclass.MainImage, 0, length);
mclass2.MainImage = new byte[length];
fmainimage.InputStream.Read(mclass2.MainImage, 0, length);
}
if (fthumbnail != null)
{
int length1 = fthumbnail.ContentLength;
mclass.ThumbNail = new byte[length1];
fthumbnail.InputStream.Read(mclass.ThumbNail, 0, length1);
mclass2.ThumbNail = new byte[length1];
fthumbnail.InputStream.Read(mclass2.ThumbNail, 0, length1);
}
if (classdetail.ClassId == 0)
{
//assign default if not assigned
Studio currentstudio = _db.Studios.Find(up.StudioId);
currentstudio.Classes.Add(mclass2);
}
else
{
_db.Entry(mclass).State = EntityState.Modified;
}
_db.SaveChanges();
return RedirectToAction(Actions.Details(mclass.ClassId));
}
}
classdetail.Trainers = (from t in _db.Trainers where t.Studio.StudioId == up.StudioId select t).ToList()
.Select(
tr =>
new SelectListItem
{
Value
=
tr
.TrainerId
.ToString
(),
Text
=
tr
.FirstName +
" " +
tr
.LastName
});
return View(classdetail);
}
，這是我的觀點：
@using (Html.BeginForm(MVC.Class.Edit(), FormMethod.Post, new { @class = "form label-inline", name = "iform", enctype = "multipart/form-data" }))
{
@Html.HiddenFor(model => model.ClassId)
<div class="formSep">
<label class="req">Name</label>
<span style="color:red">@Html.ValidationMessageFor(model => model.Name)</span>
@Html.EditorFor(model => model.Name, new { @class = "medium" })
</div>
<div class="formSep">
<label class="req">Description</label>
<span style="color:red">@Html.ValidationMessageFor(model => model.Description)</span>
@Html.TextAreaFor(model => model.Description, new { style = "width: 420px; height: 6em;" })
</div>
<div class="formSep">
<label class="req">Instructional Video Description</label>
<span style="color:red">@Html.ValidationMessageFor(model => model.InstructionalDescription)</span>
@Html.TextAreaFor(model => model.InstructionalDescription, new { style = "width: 420px; height: 6em;" })
</div>
if(Model.ClassId == 0){
<div class="formSep">
@Html.CheckBoxFor(model => model.IsRewatchable, new { style = "display:inline;" })
<label style="display: inline;" class=""> The videos in the class can be watched any number of times</label>
</div>
}
else{
<div class="formSep" style="display:none">
@Html.CheckBoxFor(model => model.IsRewatchable, new { style = "display:inline;" })
<label style="display: inline;" class=""> The videos in the class can be watched any number of times</label>
</div>
}
if (Model.ClassId == 0) {
<div class="formSep">
@Html.CheckBoxFor(model => model.IsAttendable, new { style = "display:inline;" })
<label style="display: inline;" class=""> Attendance is recorded for this class</label>
</div>
}
else
{
<div class="formSep" style="display:none">
@Html.CheckBoxFor(model => model.IsAttendable, new { style = "display:inline;" })
<label style="display: inline;" class=""> Attendance is recorded for this class</label>
</div>
}
<div class="formSep">
<label class="req">Class Image</label>
<span style="color:red">@Html.ValidationMessageFor(model => model.MainImage)</span>
<input type="file" name="fmainimage" id="fmainimage" /><br />
@if (Model.ClassId != 0)
{
if (Model.MainImage != null)
{
<img src="@Url.Action(MVC.Class.GetMainImage(Model.ClassId))"/>
}
else
{
<text>No Main Image Exists</text>
}
}
</div>
<div class="formSep">
<label class="req">Thumbnail</label>
<span style="color:red">@Html.ValidationMessageFor(model => model.ThumbNail)</span>
<input type="file" name="fthumbnail" id="fthumbnail" /><br />
@if (Model.ClassId != 0)
{
if (Model.ThumbNail != null)
{
<img src="@Url.Action(MVC.Class.GetThumbnail(Model.ClassId))"/>
}
else
{
<text>No Thumbnail Exists</text>
}
}
</div>
<div class="formSep">
<label class="req">Trainer</label>
<span style="color:red">@Html.ValidationMessageFor(model => model.Trainer)</span>
@Html.DropDownListFor(model => model.TrainerId, new SelectList(Model.Trainers, "value", "text", @Model.TrainerId))
</div>
<div class="formSep">
<button type="submit" class="button-small-theme rounded3">SAVE</button> <a href="@Url.Action(MVC.Class.Details(Model.ClassId))" class="button-small-cancel rounded" style="padding: 12px 10px 9px;">CANCEL</a>
</div>
}
如果該項目的ID爲0，將使用相同的編輯視圖，但它會創建一個新的項目
一下[在這個問題（http://stackoverflow.com/questions/19136006/mvc-validator-for-integer-array-in-model） – Jonesopolis
告訴我們您的視圖和控制器。 –
我上傳了我的Controller和View –