有运行选定发生器错误。尝试重建项目 [英] There was an error running the selected generator . try rebuilding the project

问题描述

当我创建了脚手架，并添加模型类，然后我得到这些错误的有运行选定生成一个错误。请尝试重建项目

我有三个模型类：

1.Department.CS

2.Designation.cs

3.CompanyDBContext.cs

数据库：我在数据库中的两个表，1部（DEPTID，DEPTNAME，说明）
                                         2.称号（desgtID，desgName，描述）

目标： - 我要为这些场景创建一个视图页面。像这样

表格（文本框）+部门名称（下拉列表框）+指定名称（下拉列表框）中插入名称

1.Department.CS

 命名空间mvcAppraisalSystem.Models
{
  公共类系
  {
    [键]
    公众诠释DEPTID {搞定;组; }
    公共字符串DEPTNAME {搞定;组; }
    公共字符串描述{搞定;组; }
  }
 }
 

2.Designation.cs

 命名空间mvcAppraisalSystem.Models
{
   公共类名称
   {
      [键]
      公众诠释desgID {搞定;组; }
      公共字符串desgName {搞定;组; }
      公共字符串描述{搞定;组; }
   }
 }
 

3.CompanyDBContext.cs

 命名空间mvcAppraisalSystem.Models
 {
   公共类CompanyDBContext：的DbContext
   {
      公共DbSet＆LT; CompanyDBContext＆GT; {部门获得;组; }      公共DbSet＆LT; CompanyDBContext＆GT;名称{搞定;组; }
   }
 }
 

解决方案

这是你可以改变连接字符串连接字符串的问题，你的的DbContext 名状波纹管在文件的的web.config 的：

 ＆LT;＆是connectionStrings GT;
  ＆LT;添加名称=MovieDBContext的connectionString =数据源=（的LocalDB）\\ V11.0; AttachDbFilename = | DataDirectory目录| \\ ASPNET-MVCmove-20140616082808.mdf;初始目录= ASPNET-MVCmove-20140616082808;集成安全性=真的providerName =System.Data.SqlClient的/＆GT;
＆LT; /＆是connectionStrings GT;
 

有关的类：

 使用系统;
使用System.Data.Entity的;
命名空间MVCmove.Models
{
  公共类电影
  {
    公众诠释ID {搞定;组; }
    公共字符串名称{搞定;组; }
    公众的DateTime RELEASEDATE {搞定;组; }
    公共字符串Default1Genre {搞定;组; }
    公共十进制价格{搞定;组; }
  }
  公共类MovieDBContext：的DbContext
  {
    公共DbSet＆LT;电影及GT;电影{搞定;组; }
  }
}
 

When I create the Scaffold and add the Model class then I am getting these error "There was an error running the selected generator . try rebuilding the project"

I have three Model class :

1.Department.CS

2.Designation.cs

3.CompanyDBContext.cs

Database : I have two table in database, 1. Department(deptID,deptName,Description) 2. Designation(desgtID,desgName,description)

Objective :- I want to create one view page for these scenario. Like this

Insert Name of Form (TextBox) + Department Name (Dropdown list box) + Designation Name (Dropdown list box)

1.Department.CS

namespace mvcAppraisalSystem.Models
{
  public class Department
  {
    [Key]
    public int deptID { get; set; }
    public string deptName { get; set; }
    public string Description { get; set; }
  }
 }

2.Designation.cs

namespace mvcAppraisalSystem.Models
{
   public class Designation
   {
      [Key]
      public int desgID { get; set; }
      public string desgName { get; set; }
      public string description { get; set; }
   }
 }

3.CompanyDBContext.cs

 namespace mvcAppraisalSystem.Models
 {
   public class CompanyDBContext : DbContext
   {
      public DbSet<CompanyDBContext> Departments { get; set; }

      public DbSet<CompanyDBContext> Designations { get; set; }
   }
 }

解决方案

This is the problem with the connection string you can change the connection string with your DbContext name like bellow on the file web.config:

<connectionStrings>
  <add name="MovieDBContext" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\aspnet-MVCmove-20140616082808.mdf;Initial Catalog=aspnet-MVCmove-20140616082808;Integrated Security=True" providerName="System.Data.SqlClient" />
</connectionStrings>

For the class:

using System;
using System.Data.Entity;
namespace MVCmove.Models
{
  public class Movie
  {
    public int ID { get; set; }
    public string Title { get; set; }
    public DateTime ReleaseDate { get; set; }
    public string Default1Genre { get; set; }
    public decimal Price { get; set; }
  }
  public class MovieDBContext : DbContext
  {    
    public DbSet<Movie> Movies { get; set; }
  }
}

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