我正在尝试允许用户将图片上传到我们的网站,我不太确定如何使用它。我尝试使用多种类型来定义图片,包括System.Drawing.Image
和HttpPostedFileWrapper
,但@Html.EditorFor
总是(可以理解)将其属性显示为要编辑的字段。
在我看来,我确实有,而不是@Html.EditorFor
我确实有<input type="file" name="imageToUpload" />
但是它没有作为Model
的一部分被视为我的观点?我对MVC很陌生,所以我希望它是微不足道的。
这是我的观点:
@using (Html.BeginForm()) {
@Html.ValidationSummary(true)
<fieldset>
<legend>New Image</legend>
<div class="editor-label">
@Html.LabelFor(model => model.Description)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Description)
@Html.ValidationMessageFor(model => model.Description)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Image)
</div>
<div class="editor-field">
<input type="file" name="imageToUpload" />
</div>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}
我的控制器:
[HttpPost]
public ActionResult CreateImage(string brand, string collection, ImageEditViewModel imageEditViewModel)
{
string fileName = Guid.NewGuid().ToString();
string serverPath = Server.MapPath("~");
string imagesPath = serverPath + String.Format("Content\\{0}\\Images\\", Helper.Helper.ResolveBrand());
string newLocation = Helper.Helper.SaveImage(fileName, imagesPath, imageEditViewModel.Image.InputStream)
Image image = new Image
{
Collection = ds.Single<Collection>(c => c.Season == collection
&& c.Brand.Name == brand),
Description = imageEditViewModel.Description,
Location = "newLocation",
Order = Helper.Helper.GetImageOrder(brand, collection)
};
ds.InsertOnSubmit<Image>(image);
ds.SubmitChanges();
return RedirectToAction("Brand");
}
最后是ViewModel:
public class ImageEditViewModel
{
public int CollectionId { get; set; }
public string Description { get; set; }
public HttpPostedFileWrapper Image { get; set; }
public int Order { get; set; }
}
答案 0 :(得分:15)
确保在表单上指定正确的enctype="multipart/form-data"
,否则您将无法上传文件:
@using (Html.BeginForm(null, null, FormMethod.Post, new { enctype = "multipart/form-data" }))
{
@Html.ValidationSummary(true)
<fieldset>
<legend>New Image</legend>
<div class="editor-label">
@Html.LabelFor(model => model.Description)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Description)
@Html.ValidationMessageFor(model => model.Description)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.ImageToUpload)
</div>
<div class="editor-field">
<input type="file" name="imageToUpload" />
</div>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}
如果您想使用EditorFor
助手生成文件输入,可以使用以下内容:
<div class="editor-label">
@Html.LabelFor(model => model.ImageToUpload)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ImageToUpload)
</div>
然后为HttpPostedFileBase
类型定义自定义编辑器模板(请参阅下文,您需要修改模型以实际使用此类型)。那么~/Views/Shared/EditorTemplates/HttpPostedFileBase.cshtml
中的编辑器模板:
@model HttpPostedFileBase
@Html.TextBox("", null, new { type = "file" })
并在您的视图模型上使用HttpPostedFileBase
类型,并确保该属性的名称与表单上输入的文件名相匹配:
public class ImageEditViewModel
{
public int CollectionId { get; set; }
public string Description { get; set; }
public HttpPostedFileBase ImageToUpload { get; set; }
public int Order { get; set; }
}
另请务必查看following blog post。