asp.net上的总体菜鸟,试图在这里自学ASP.NET Core 2.0 MVC。
我目前所坚持的:
尝试找到用于上载图像的教程,以将图像放入根目录的子目录中,例如/ images / items,然后将该路径保存到数据库中,以便在列出项目时也可以将图像img src。 / p>
这是我到目前为止所做的:
ItemsController:
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create([Bind("Id,SupplierId,CategoryId,Name,Description,Image,Price,Enabled,DateAdded")] Item item)
{
if (ModelState.IsValid)
{
// add image upload
// end image upload
_context.Add(item);
await _context.SaveChangesAsync();
return RedirectToAction(nameof(Index));
}
return View(item);
}
我的Item
模型班是:
public class Item
{
public int Id { get; set; }
public int SupplierId { get; set; }
public int CategoryId { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string Image { get; set; }
public float Price { get; set; }
public Boolean Enabled { get; set; }
public DateTime DateAdded { get; set; }
}
我的剃须刀Create
的格式为:
@model QualitySouvenirs.Models.Item
<form asp-action="Create" enctype="multipart/form-data">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
//Other input fields has been removed for brevity
<div class="form-group">
<label asp-for="Image" class="control-label"></label>
<input asp-for="Image" type="file" class="form-control" />
<span asp-validation-for="Image" class="text-danger"></span>
</div>
<div class="form-group">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</form>
这是我的Index.cshtml
,我要在其中显示图像:
@model IEnumerable<QualitySouvenirs.Models.Item>
<table class="table">
<thead>
<tr>
// other th's removed for brevity
<th>
@Html.DisplayNameFor(model => model.Image)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
// other td's removed for brevity
<td>
@Html.DisplayFor(modelItem => item.Image)
</td>
<td>
<a asp-action="Edit" asp-route-id="@item.Id">Edit</a> |
<a asp-action="Details" asp-route-id="@item.Id">Details</a> |
<a asp-action="Delete" asp-route-id="@item.Id">Delete</a>
</td>
</tr>
}
</tbody>
</table>
我从这里去哪里?我怀疑我需要一些使用声明吗?
答案 0 :(得分:5)
编写您的Create POST方法,如下所示:
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create(Item item,IFormFile image)
{
if (ModelState.IsValid)
{
if (image != null && image.Length > 0)
{
var fileName = Path.GetFileName(image.FileName);
var filePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot\\images\\items", fileName);
using (var fileSteam = new FileStream(filePath, FileMode.Create))
{
await image.CopyToAsync(fileSteam);
}
item.Image = fileName;
}
_context.Add(item);
await _context.SaveChangesAsync();
return RedirectToAction(nameof(Index));
}
return View(item);
}
然后在表格中显示图像:
<td>
<img class="img-responsive" src="@Url.Content("~/images/items/" + @item.Image)" alt="">
</td>