insert dropdown仅列出数据到表的ID

Question

我有两张桌子：tbleducation和tblemployee。 tblemployee表具有以下字段：employeeID，employeeName等。而tbleducation具有以下字段：Id，employeeID等。

我想创建一个dropwdownlist，从tblemployee表中选择一个employeeID给employeeID，以便将其插入到tbleducation中。我编写的代码如下：

模型

public class UserModels
{

    public string EmployeeName { get; set; }
    public int EmployeeCode { get; set; }
    public IEnumerable<SelectListItem> Employee { set; get; }
}

控制器

[HttpPost]
public ActionResult Education(FormCollection edu)
{
    tblEmployee_Education education = new tblEmployee_Education();
    education.EmployeeID = Convert.ToInt32(edu["EmployeeName"].ToString());
    education.Duration = edu["Duration"].ToString();
    education.Certificate = edu["Certificate"].ToString();
    education.Country = edu["Country"].ToString();
    education.SchoolName = edu["SchoolName"].ToString();
    education.Major = edu["Major"].ToString();
    education.SubDescript = edu["SubDescript"].ToString();
    context.AddTotblEmployee_Education(education);
    context.SaveChanges();
    return View();
}

查看

<%= Html.DropDownListFor(x => x.EmployeeName, Model.Employee, "select EmployeeName")%> 

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当我尝试插入时，出现以下错误消息：

  

“INSERT语句与FOREIGN KEY约束FK_tblEmployee_Education_tblEmployee_Employee冲突”。冲突发生在数据库“MP_DBS_old”，表“dbo.tblEmployee_Employee”，列“代码”中。声明已经终止。“

我知道发生此错误是因为dropdownlist中的值是一个字符串，而数据库需要一个整数（employeeID）。我真的不知道如何解决它。任何人都可以帮助我！