@using BookStore
@using Microsoft.Framework.OptionsModel
@addTagHelper "*, Microsoft.AspNet.Mvc.TagHelpers"

var connection1 = Request.HttpContext.GetFeature<IHttpConnectionFeature>();
var connection2 = Context.GetFeature<IHttpConnectionFeature>();

var isLocal = connection1.IsLocal; //是否本地IP 
var localIpAddress = connection1.LocalIpAddress; //本地IP地址
var localPort = connection1.LocalPort; //本地IP端口
var remoteIpAddress = connection1.RemoteIpAddress; //遠程IP地址
var remotePort = connection1.RemotePort; //本地IP端口

<form method="post" enctype="multipart/form-data">
 <input type="file" name="files" id="files" multiple />
<input type="submit" value="submit" />
</form>

[HttpPost]
public async Task<IActionResult> Index(IList<IFormFile> files)
{
 foreach (var file in files)
 {
 var fileName = ContentDispositionHeaderValue
 .Parse(file.ContentDisposition)
 .FileName
 .Trim('"');// beta3版本的bug，FileName返回的字符串包含雙引號，如"fileName.ext"
 if (fileName.EndsWith(".txt"))// 只保存txt文件
 {
 var filePath = _hostingEnvironment.ApplicationBasePath + "\\wwwroot\\"+ fileName;
 await file.SaveAsAsync(filePath);
 }
 }
 return RedirectToAction("Index");// PRG
}