'IFormFile‘不包含'GetFileName’的定义

Question

我试图编写一个操作来上传文件，当我试图调用GetFileName()方法时，我得到了以下错误：

'IFormFile' does not contain a definition for 'GetFileName' and no accessible extension method 'GetFileName' accepting a first argument of type 'IFormFile' could be found (are you missing a using directive or an assembly reference?)

我的控制器使用以下名称空间：

using Microsoft.Extensions.FileProviders;
using System.IO;
using Microsoft.AspNetCore.Http;

行动是：

 [HttpPost]  
        public async Task<IActionResult> UploadFile(IFormFile file)  
        {
            if (file == null || file.Length == 0)  
            return Content("file not selected");  
            var path = Path.Combine(  
                  Directory.GetCurrentDirectory(), "wwwroot", file.GetFileName());  
            using (var stream = new FileStream(path, FileMode.Create))  
            {  
                await file.CopyToAsync(stream);  
            }  
            return RedirectToAction("Files");  
        }  

Answer 1

要使用IFormFile获取上传文件的文件名，我们可以使用file.FileName获取它。

试试这个：

[HttpPost]  
        public async Task<IActionResult> UploadFile(IFormFile file)  
        {
            if (file == null || file.Length == 0)  
            return Content("file not selected");  
            var path = Path.Combine(  
                  Directory.GetCurrentDirectory(), "wwwroot", file.FileName);  
            using (var stream = new FileStream(path, FileMode.Create))  
            {  
                await file.CopyToAsync(stream);  
            }  
            return RedirectToAction("Files");  
        }