我正在尝试允许用户上传图像到我们的网站,但我不太确定如何使用它。我尝试使用多种类型来定义图像,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,我有<input type="file" name="imageToUpload" />,但它没有被带到我的观点中,作为Model的一部分?我是MVC的新手,所以我希望它是一些微不足道的东西。
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; }
}发布于 2012-03-13 18:19:50
请确保在表单上指定正确的enctype="multipart/form-data",否则将无法上载文件:
@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帮助器来生成文件输入,您可以使用以下命令:
<div class="editor-label">
@Html.LabelFor(model => model.ImageToUpload)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.ImageToUpload)
</div>然后为HttpPostedFileBase类型定义一个自定义编辑器模板(请参见下面的内容,您需要修改模型才能实际使用此类型)。所以~/Views/Shared/EditorTemplates/HttpPostedFileBase.cshtml中的编辑器模板
@model HttpPostedFileBase
@Html.TextBox("", null, new { type = "file" })在视图模型上,使用HttpPostedFileBase类型,并确保属性的名称与表单上输入的文件名称相匹配:
public class ImageEditViewModel
{
public int CollectionId { get; set; }
public string Description { get; set; }
public HttpPostedFileBase ImageToUpload { get; set; }
public int Order { get; set; }
}还要确保检查following blog post。
https://stackoverflow.com/questions/9682061
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