@{
 ViewData["Title"] = "Home Page";
}
<link href="~/kindeditor/themes/default/default.css" rel="stylesheet" />
<script src="~/kindeditor/kindeditor-min.js"></script>
<script src="~/kindeditor/lang/zh_CN.js"></script>
 
<div class="row">
 <textarea id="detail_desc" name="detail_desc" style="width:700px;height:300px;">
  
 </textarea> 
</div>
<script type="text/javascript">
 //实例化编辑器
 //建议使用工厂方法getEditor创建和引用编辑器实例，如果在某个闭包下引用该编辑器，直接调用UE.getEditor('editor')就能拿到相关的实例
 KindEditor.ready(function (K) {
  window.editor = K.create('#detail_desc', {
   width: '98%',
   height: '500px'
  });
 }); 
</script>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;
using Microsoft.Net.Http.Headers;
using Microsoft.AspNetCore.Hosting;
using System.IO;
namespace kindeditortest.Controllers
{
 public class HomeController : Controller
 {
  private IHostingEnvironment hostingEnv;
  public IActionResult Index()
  {
   return View();
  }
  public HomeController(IHostingEnvironment env)
  {
   this.hostingEnv = env;
  }
  /// <summary>
 /// Kindeditor图片上传
  /// </summary>
 /// <param name="imgFile">Kindeditor图片上传自带的命名，不可更改名称</param>
 /// <param name="dir">不可更改名称 这里没有用到dir</param>
 /// <returns></returns>
 public IActionResult KindeditorPicUpload(IList<IFormFile> imgFile, string dir)
  {
   PicUploadResponse rspJson = new PicUploadResponse() { error = 0, url = "/upload/" };
   long size = 0;
   string tempname = "";
   foreach (var file in imgFile)
   {
    var filename = ContentDispositionHeaderValue
        .Parse(file.ContentDisposition)
        .FileName
        .Trim('"');
    var extname = filename.Substring(filename.LastIndexOf("."), filename.Length - filename.LastIndexOf("."));
    var filename1 = System.Guid.NewGuid().ToString() + extname;
    tempname = filename1;
    var path = hostingEnv.WebRootPath;
    filename = hostingEnv.WebRootPath + $@"upload{filename1}";
    size += file.Length;
    using (FileStream fs = System.IO.File.Create(filename))
    {
     file.CopyTo(fs);
     fs.Flush();
     //这里是业务逻辑
    }
   }
   rspJson.error = 0;
   rspJson.url = $@"../../upload/" + tempname;
   return Json(rspJson);
  }
  public IActionResult About()
  {
   ViewData["Message"] = "Your application description page.";
   return View();
  }
  public IActionResult Contact()
  {
   ViewData["Message"] = "Your contact page.";
   return View();
  }
  public IActionResult Error()
  {
   return View();
  }
 }
 public class PicUploadResponse
 {
  public int error { get; set; }
  public string url { get; set; }
 }
}

<script type="text/javascript">
 //实例化编辑器
 //建议使用工厂方法getEditor创建和引用编辑器实例，如果在某个闭包下引用该编辑器，直接调用UE.getEditor('editor')就能拿到相关的实例
 KindEditor.ready(function (K) {
  window.editor = K.create('#detail_desc', {
   width: '98%',
   height: '500px',
   uploadJson: '/home/KindeditorPicUpload',
   fileManagerJson: '/home/KindeditorPicUpload',
   allowFileManager: true
  });
 }); 
</script>