Question

尝试在运行时使用连接字符串或从App.config中删除它。但是我收到错误。

fyi：EF 6 CodeFirst

public class DfDbContext : DbContext
{
    public DfDbContext()
        : base(GetConnectionString())
    {

    }


    private static string GetConnectionString()
    {
        SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder();
        builder.DataSource = "xxxxx";
        builder.InitialCatalog = "xxxx";
        builder.UserID = "xxx";
        builder.Password = "xxxx";
        builder.MultipleActiveResultSets = true;
        builder.PersistSecurityInfo = true;
        return builder.ConnectionString.ToString();

    }
}

错误

类型＆＃39; System.ArgumentException＆＃39;的例外情况发生在   System.Data.dll但未在用户代码中处理

其他信息：不支持关键字：＆＃39;初始目录＆＃39;。

任何其他解决方案？

Answer 1

参考link。有效的连接字符串应如下所示

<add name="XXXX" 
     connectionString="Data Source=MONTGOMERY-XXXX;Initial Catalog=XXXX;Integrated Security=True;" 
     providerName="System.Data.SqlClient" />

我认为你错过了提供商名称。尝试添加并检查

Answer 2

问题解决了！设置默认连接工厂！

<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework">
  <parameters>
    <parameter value="Data Source=.; Integrated Security=True; MultipleActiveResultSets=True" />
  </parameters>
</defaultConnectionFactory>

使用以下DbContext。

public class Model : DbContext
{
    public Model()
        : base(ConnectionString())
    {
    }

    public virtual DbSet<MyEntity> MyEntities { get; set; }

    private static string ConnectionString()
    {
        // logic here
        return "Data Source=(local);Initial Catalog=xx;Integrated Security=False;User ID=sa;Password=xx;MultipleActiveResultSets=True;App=EntityFramework";
    }
}

在运行时设置连接字符串 - EF代码优先

2 个答案: