我使用asp.net核心剃须刀页面来创建我的应用程序,在我的创建页面中,我有两个文件控件,一个用于上传图标图像,另一个用于上传详细图像。但是,当我单击“编辑”按钮时,除两个文件控件外,所有字段均已初始化。请检查我的代码。有人可以帮忙吗?
在我的剃须刀页面中:
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label asp-for="Product.Icon" class="control-label"></label>
<input asp-for="@Model.Icon" type="file" />
<span asp-validation-for="Product.Icon" class="text-danger"></span>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label class="control-label”>Detail Images(support multi-uploading):</label>
<input type="file" id="fUpload" name="files" multiple />
</div>
</div>
</div>
在我的页面模型中:
public async Task<IActionResult> OnGetAsync(int? id)
{
if (id == null)
{
return NotFound();
}
Product = await _context.Products
.Include(p => p.Shop).SingleOrDefaultAsync(m => m.ID == id);
if (Product == null)
{
return NotFound();
}
ViewData["Shop"] = new SelectList(_context.Shops, "ID", "Name");
return Page();
}
public async Task<IActionResult> OnPostAsync(List<IFormFile> files)
{
if (!ModelState.IsValid)
{
return Page();
}
var uploads = Path.Combine(hostingEnvironment.WebRootPath, "uploads");
if (!Directory.Exists(uploads))
{
Directory.CreateDirectory(uploads);
}
if (this.Icon != null)
{
var fileName = GetUniqueName(this.Icon.FileName);
var filePath = Path.Combine(uploads, fileName);
this.Icon.CopyTo(new FileStream(filePath, FileMode.Create));
this.Product.Icon = fileName;
}
if (files != null && files.Count > 0)
{
foreach (IFormFile item in files)
{
if (item.Length > 0)
{
var fn = GetUniqueName(item.FileName);
var fp = Path.Combine(uploads, fn);
item.CopyTo(new FileStream(fp, FileMode.Create));
this.Product.ProductImages = this.Product.ProductImages + fn + "^";
}
}
}
_context.Attach(Product).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!ProductExists(Product.ID))
{
return NotFound();
}
else
{
throw;
}
}
return RedirectToPage("./Index");
}
答案 0 :(得分:0)
您提供的代码<form>
中缺少页面中最重要的部分。为了使文件上载正常工作,必须指定该方法为post
,还必须提供一个enctype
属性,其值设置为multipart/form-data
:
<form method="post" enctype="multipart/form-data">
...