使用dapper返回对象列表，每个父母包含两个其他对象

发布于 2025-02-11 13:59:11 字数 695 浏览 0 评论 0原文

我是Dapper的新手，并有一个3型模型类示例。 SQL数据库具有下面每个模型的关联表。

我的目的是填充作业对象列表（即作业表中的所有记录），每个记录都包含其关联状态＆amp;客户端对象。使用Dapper将如何实现？

感谢您提供的任何帮助！

SQL将是：

选择j。*，s。*，c。 >

模型是：

    public class StatusModel
    {
          public int Id { get; set; }
          public string StatusName { get; set; }
    }


   public class ClientModel
   {
      public int Id { get; set; }
      public string ClientName { get; set; }
      
   }


    public class JobModel
    {

      public int Id { get; }

      public string Description { get; set; }

      public StatusModel Status {get; set; }
      public ClientModel Client { get; set; }
    }

原文

I'm new to Dapper, and have a 3 model class example. The SQL Database has associated tables for each model below.

My aim is to populate a list of Job objects (ie. all records in the Job table), each containing its associated Status & Client objects. How would this be achieved using Dapper?

Thank you kindly for any help you can give me!

The SQL will be :

SELECT j.*, s.*, c.* FROM Job j INNER JOIN Status s ON j.StatusId = s.Id INNER JOIN Client ON j.ClientId = c.Id;

The models are :

    public class StatusModel
    {
          public int Id { get; set; }
          public string StatusName { get; set; }
    }


   public class ClientModel
   {
      public int Id { get; set; }
      public string ClientName { get; set; }
      
   }


    public class JobModel
    {

      public int Id { get; }

      public string Description { get; set; }

      public StatusModel Status {get; set; }
      public ClientModel Client { get; set; }
    }

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烟酉 2025-02-18 13:59:11

您可以使用Dapper的Multimap功能。

using (SqlConnection connection = new SqlConnection(connectionString))
{
    var jobs = await connection.QueryAsync<JobModel, StatusModel, ClientModel, JobModel>(sql, (job, status, client) =>
    {
        job.Status = status;
        job.Client = client;
        return job;
    }, splitOn: "StatusID,ClientID");   
}

您可以阅读更多在这里。

You can use Dapper's multimap feature.

using (SqlConnection connection = new SqlConnection(connectionString))
{
    var jobs = await connection.QueryAsync<JobModel, StatusModel, ClientModel, JobModel>(sql, (job, status, client) =>
    {
        job.Status = status;
        job.Client = client;
        return job;
    }, splitOn: "StatusID,ClientID");   
}

You can read more here.

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