c# - 不要创建 codefirst DB .net

Question

我删除了我的数据库，然后DbContext重新构建，但没有创建数据库。我尝试了迁移，但始终无法构建。然后我尝试放入-v包管理器控制台，它返回了这个：

-v : The term '-v' is not recognized as the name of a cmdlet, function, script file, or operable program. 
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ -v
+ ~~
    + CategoryInfo          : ObjectNotFound: (-v:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

数据库上下文：

public class User
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    [Required]
    public int Id { get; set; }
    [Required]
    public string Nickname { get; set; }
    [Required]
    public string Password { get; set; }
    [Required]
    public string Email { get; set; }
}

public class DrawContext : DbContext
{
    public DrawContext() : base("name=DrawDB_cs")
    {
    }
    public virtual DbSet<User> Users { get; set; }

应用程序配置：

<connectionStrings>
    <add name="DrawDB_cs" 
         connectionString="data source=(localdb)\MSSQLLocalDB;initial catalog=DrawDB;Integrated Security=True" 
         providerName="System.Data.SqlClient" />
</connectionStrings>

标签： c#.netdatabaseentity-frameworkef-code-first