在ASP.NET核心应用程序中连接两个数据源

{
  "ConnectionStrings": {
    "DataSource1": "Server=server1;Database=db1;User Id=user1;Password=pass1;",
    "DataSource2": "Server=server2;Database=db2;User Id=user2;Password=pass2;"
  }
}

using Microsoft.Extensions.Configuration;
using System.Data.SqlClient;

public class DataAccessLayer
{
    private readonly IConfiguration _configuration;

    public DataAccessLayer(IConfiguration configuration)
    {
        _configuration = configuration;
    }

    public void ConnectToDataSources()
    {
        string dataSource1ConnectionString = _configuration.GetConnectionString("DataSource1");
        string dataSource2ConnectionString = _configuration.GetConnectionString("DataSource2");

        using (SqlConnection connection1 = new SqlConnection(dataSource1ConnectionString))
        {
            // Connect to DataSource1 and perform database operations
        }

        using (SqlConnection connection2 = new SqlConnection(dataSource2ConnectionString))
        {
            // Connect to DataSource2 and perform database operations
        }
    }
}

public class BusinessLogicLayer
{
    private readonly DataAccessLayer _dataAccessLayer;

    public BusinessLogicLayer(DataAccessLayer dataAccessLayer)
    {
        _dataAccessLayer = dataAccessLayer;
    }

    public void ConnectToDataSources()
    {
        _dataAccessLayer.ConnectToDataSources();
    }
}