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我有一个课程，事件，我希望能够在事件页面上显示图像。我已经定义了图像类，但现在确定如何上传图像。我希望能够将图像存储在数据库中。

public class Event
    {
        public int Id { get; set; }

        public string Title { get; set; }

        public string  Description { get; set; }

        public string Address { get; set; }

        public string AddressTwo { get; set; }

        public virtual Person Owner { get; set; }

        public DateTime Date { get; set; }

        public virtual Image Image { get; set; }
    }

 public class Image 
    {
        public int Id { get; set; }

        public string Name { get; set; }

        public string AlternateText { get; set; }

        public virtual string CssClass { get; set; }

        public Byte[] File { get; set; }
    }
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1 回答 1

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如果你想处理文件上传，你应该使用HttpPostedFileBase类型来表示图像，而不是字节数组：

public class Image 
{
    public int Id { get; set; }
    public string Name { get; set; }
    public string AlternateText { get; set; }
    public virtual string CssClass { get; set; }
    public HttpPostedFileBase File { get; set; }
}

然后在您看来，您将使用文件输入：

@model Event
@using (Html.BeginForm(null, null, FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <div>
        @Html.LabelFor(x => x.Image.File)
        @Html.TextBox(x => x.Image.File, new { type = "file" })
    </div>
    ... some other fields
    <button type="submit">OK</button>
}

最后，您将拥有将发布表单并保存文件的控制器操作：

[HttpPost]
public ActionResult Upload(Event model)
{
    if (model.Image != null && model.Image.ContentLength > 0)
    {
        // an image was selected by the user => process and store it into the database
    }
    ...
}

您可能还会发现以下博客文章很有用。

于 2011-12-02T07:49:38.633 回答