context.savechanges（）給錯誤而插入

爲什麼我得到空誤差JobSeekerId，我已經通過了所有的強制值通過參數，但context.savechanges（）返回我的錯誤context.savechanges（）給錯誤而插入

無法插入值NULL到'JobseekerId'列中，表 'Sample1.dbo.JobseekerBackgroundDetail';列不允許有空值。 INSERT失敗。該語句已終止。

但我相信我通過jobseekerid，我在調試時得到這個值。我想模型有一些問題。任何人都可以指出我的錯誤我在哪裏做wrong.here出來是我的代碼型號：

public class JobseekerBackgroundDetail 
    { 
     [Key] 
     public int JobseekerId { get; set; } 
     public string HighestDegree { get; set; } 
     public string Specialisation { get; set; } 
     public Nullable<int> PassingYear { get; set; } 
     public Nullable<double> Percentage { get; set; } 
     public string University { get; set; } 
     public string Country { get; set; } 
     public string TechnicalExp { get; set; } 
     public string WorkField { get; set; } 
    }

控制器

[HttpPost] 
     public ActionResult JobSeekerAddEditEducation(string HighestDegree, string Specialisation, int PassingYear, double Percentage, string University, string Country, string TechnicalExp, string WorkField) 
     { 
      EmployeeContext employeeContext = new EmployeeContext(); 
      JobseekerBackgroundDetail jobseekerBackgroundDetail = new JobseekerBackgroundDetail(); 

      if (Session["LogedUserID"] != null) 
      { 
       int id = Convert.ToInt32(Session["LogedUserID"]); 
       bool exists = employeeContext.JobseekerBackgroundDetails.Any(row => row.JobseekerId == id); 
       if (exists != true) 
       { 
        if (ModelState.IsValid) 
        { 
         jobseekerBackgroundDetail.JobseekerId = id; 
         jobseekerBackgroundDetail.HighestDegree = HighestDegree; 
         jobseekerBackgroundDetail.Specialisation = Specialisation; 
         jobseekerBackgroundDetail.PassingYear = PassingYear; 
         jobseekerBackgroundDetail.Percentage = Percentage; 
         jobseekerBackgroundDetail.University = University; 
         jobseekerBackgroundDetail.Country = Country; 
         jobseekerBackgroundDetail.TechnicalExp = TechnicalExp; 
         jobseekerBackgroundDetail.WorkField = WorkField; 
         employeeContext.JobseekerBackgroundDetails.Add(jobseekerBackgroundDetail); 
         employeeContext.SaveChanges(); 
        } 
        return RedirectToAction("JobSeekerProfile"); 
       } 
       else 
       { 
        var query = from p in employeeContext.JobseekerBackgroundDetails 
           where p.JobseekerId == id 
           select p; 
        foreach (JobseekerBackgroundDetail p in query) 
        { 
         p.JobseekerId = id; 
         p.HighestDegree = HighestDegree; 
         p.Specialisation = Specialisation; 
         p.PassingYear = PassingYear; 
         p.Percentage = Percentage; 
         p.University = University; 
         p.Country = Country; 
         p.TechnicalExp = TechnicalExp; 
         p.WorkField = WorkField; 
        } 
        try 
        { 
         employeeContext.SaveChanges(); 
        } 
        catch (Exception e) 
        { 
        } 
        return RedirectToAction("JobSeekerProfile"); 
       } 
      } 
      else 
      { 
       return RedirectToAction("JobSeekerLogin", "JobSeeker"); 
      } 
     }

視圖

@model Sample.Models.JobseekerBackgroundDetail 
@using (Html.BeginForm("JobSeekerAddEditEducation", "JobSeeker", FormMethod.Post)) 
{ 
    <div class="container"> 

         @Html.Label("Highest Degree", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.HighestDegree, new { @class = "form-control", @placeholder = "HighestDegree" }) 


         @Html.Label("Specialisation", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.Specialisation, new { @class = "form-control", @placeholder = "Specialisation" }) 

         @Html.Label("Passing Year", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.PassingYear, new { @class = "form-control", @placeholder = "Passing Year" }) 


         @Html.Label("Percentage", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.Percentage, new { @class = "form-control", @placeholder = "Percentage" }) 


         @Html.Label("University", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.University, new { @class = "form-control", @placeholder = "University" }) 

         @Html.Label("Country", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.Country, new { @class = "form-control", @placeholder = "Country" })      


         @Html.Label("Technical Exp", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.TechnicalExp, new { @class = "form-control", @placeholder = "Technical Exp" }) 


         @Html.Label("Work Field", htmlAttributes: new { @class = "control-label col-md-2" }) 
         @Html.TextBoxFor(model => model.WorkField, new { @class = "form-control", @placeholder = "Work Field" }) 

        <button type="submit" class="btn btn-primary pull-left col-md-offset-2">Submit</button> 

    </div> 
}

在我的模型中的所有值都除了JobseekerId之外可以爲空。請幫忙。卡住了這個問題，這對我來說很難找到問題..

來源

2015-09-06 Miranda

不相關，但刪除您的發佈方法中的所有參數，並用'JobseekerBackgroundDetail模型'替換。 –

在IF檢查你得到Id爲：int id = Convert.ToInt32（Session [「LogedUserID」]）; ，我不確定，你從ELSE部分獲取Id的位置。 –

@Stephen Muecke，先生，我已經做到了，但找不到任何區別。仍然得到相同的錯誤，否則部分工作更新，但不能工作，如果加入的一部分 – Miranda

使用此代碼： //已添加（optinioal）。

public ActionResult actionname(datatype yourclassname) 
 
{ 
 
db.Entry(yourclassname).State = System.Data.Entity.EntityState.Added; 
 
db.savechanges(); 
 
}

並檢查您的MVC視圖發送所有類參數的作用。

來源

2015-09-06 09:34:54

context.savechanges（）給錯誤而插入

回答

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