redirectToAction 正在重置数组

Posted 2023-02-24

【中文标题】redirectToAction 正在重置数组

【英文标题】：redirectToAction is resetting array

【发布时间】：2021-04-07 23:47:51

【问题描述】：

您好，我正在为这个 Web 应用程序使用 C#，并且我正在尝试通过 redirectToAction 传递对象 stdnt。但是当它刷新并进入索引时，skillResults 总是为空的。我单步执行到提交的末尾，它包含所有正确的信息，但是当我单步执行索引时它被重置。任何帮助将不胜感激。

    public IActionResult Index(Student stdnt)
    
        return View(stdnt);
    

    /// <summary>
    /// submit student skills
    /// </summary>
    /// <param name="con"></param>
    /// <returns></returns>
    [HttpPost]
    public async Task<ActionResult> submit(Student stdnt)
    
        stdnt = IsValidStudent(stdnt);
        if (stdnt.warning == "")
        
            //initialize arrays
            stdnt.skillResults = new SkillResult[9];
            for(int i = 0; i < 9; i++)
            
                stdnt.skillResults[i] = new SkillResult();
                stdnt.skillResults[i].skill_name = "";
                stdnt.skillResults[i].skill_type = "";
                stdnt.skillResults[i].description = "";
                stdnt.skillResults[i].importance = "";
            

            stdnt.success = true;
            //find skills for the three jobs listed
            for (int i = 0; i < 3; i++)
            
                if (!string.IsNullOrEmpty(stdnt.JobNames[i]))
                
                    var jobList = new List<Job>();
                    jobList = await getJobs(stdnt.JobNames[i]);

                    var jobSkills = new JobSkills();
                    jobSkills = await getJobSkills(jobList[i].uuid);

                    //find top three skills based on importance level
                    var importantSkills = new List<Skill>();
                    for (int j = 0; j < 3; j++)
                    
                        importantSkills.Add(new Skill()  level = 0 );
                    
                    for (int j = 0; j < jobSkills.skills.Count; j++)
                    
                        if (jobSkills.skills[j].level > importantSkills[0].level)
                        
                            importantSkills[0] = jobSkills.skills[j];
                        
                        else if (jobSkills.skills[j].level > importantSkills[1].level)
                        
                            importantSkills[1] = jobSkills.skills[j];
                        
                        else if (jobSkills.skills[j].level > importantSkills[2].level)
                        
                            importantSkills[2] = jobSkills.skills[j];
                        
                    

                    //set students results
                    for(int j = 0;j < 3; j++)
                    
                        stdnt.skillResults[j + i * 3].skill_name = importantSkills[j].skill_name;
                        stdnt.skillResults[j + i * 3].skill_type = importantSkills[j].skill_type;
                        stdnt.skillResults[j + i * 3].description = importantSkills[j].description;
                        stdnt.skillResults[j + i * 3].importance = importantSkills[j].importance.ToString();
                    
                
            
        
        else
        
            stdnt.success = false;
        
        return RedirectToAction("Index", stdnt);
    

【参考方案1】：

正如 Courtwright (https://***.com/a/129361/14879818) 所述帖子不支持重定向。

为了接收你的对象stdnt，你需要使用装饰器[HttpGet]。