如何配置 Entity Framework 以使用连接字符串中的任何数据库

Question

我继承的代码有一个 OnModelCreating(ModelBuilder modelBuilder) ，在该方法内部，对于每个实体，它 entity.ToTable("someTableName", "someDatabaseName");

我如何配置 EF 以使用连接字符串中的任何数据库，而不是在 entity.ToTable("someTableName", "someDatabaseName"); 中指定“someDatabaseName”？

一个解决方案是进入 OnModelCreating(ModelBuilder modelBuilder) 并将字符串“someDatabaseName”变成一个变量，然后根据连接字符串设置该变量，（但有些事情看起来很奇怪，让我想知道是什么是更好、更受欢迎的方式吗？）

//This code runs before OnModelCreating()
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
    if (!optionsBuilder.IsConfigured)
    {
        optionsBuilder.UseMySQL(_connectionString);   
        //I wrongly assume the context would be using the db from this conn string, 
        //but it's not, it's using the database "someDatabaseName" from OnModelCreating below
    }
}
        
        
//after OnConfiguring, then this code runs
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    modelBuilder.HasAnnotation("ProductVersion", "2.2.4-servicing-10062");
    modelBuilder.Entity<SomeClass>(entity =>
    {
        entity.ToTable("table1", "someDatabaseName");   //i could make "someDatabaseName a variable, but surely there is a better way?
        ...
    }
}

Answer 1

解决方案是改变这个

entity.ToTable("table1", "someDatabaseName");

至此

entity.ToTable("table1");

如何配置 Entity Framework 以使用连接字符串中的任何数据库

How do I configure Entity Framework to use whatever database is in the connection string

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