編譯錯誤試圖保存圖像.NET的核心 - 參數類型「System.IO.FileStream」是不能分配給參數類型「System.IO.Stream」
[HttpPost]
public async Task<IActionResult> Upload(string memberNumber, IFormFile file)
{
var uploadsFolderPath = Path.Combine(_host.WebRootPath, "uploads");
var fileName = Guid.NewGuid() + Path.GetExtension(file.FileName);
var filePath = Path.Combine(uploadsFolderPath, fileName);
using (var stream = new FileStream(filePath, FileMode.Create))
{
// Here's the compilation error
await file.CopyToAsync(stream);
}
var photo = new Photo(fileName);
var member = _unitOfWork.Members.GetByMemberNumber(memberNumber);
member.Photo = photo;
_unitOfWork.Complete();
return Ok(_mapper.Map<Photo, PhotoResource>(photo));
}
我得到一個編譯錯誤試圖保存圖像.NET Core -
Argument type 'System.IO.FileStream' is not assignable to parameter type 'System.IO.Stream'
這是爲什麼?我應該使用另一個Streamwriter嗎?我不確定是否缺少包裹?
.csproj的引用:
<ItemGroup>
<PackageReference Include="AutoMapper" Version="6.1.0" />
<PackageReference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="2.0.1" />
<PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.3" />
<PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.2" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.2" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.1" PrivateAssets="All" />
<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.2" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.2" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.1.1" PrivateAssets="All" />
<PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.2" />
<PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
的FileStream元頂:
#region Assembly System.IO.FileSystem, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a//C:\Users\Leon\.nuget\packages\system.io.filesystem\4.3.0\ref\netstandard1.3\System.IO.FileSystem.dll#endregion
向我們展示你的.csproj文件的參考部分。此外,如果您右鍵單擊並查看新文件流中的元數據(「請致電並向我們顯示新窗口頂部的註釋部分中的文本 –
@ScottChamberlain我已更新該問題,謝謝! – Lindeberg
你使用Resharper?你能告訴我們它的版本嗎? – Volkan