如何在实体框架6中调用存储过程(代码优先)?

我对实体框架6非常陌生，我想在我的项目中实现存储过程。我有一个存储过程如下:

ALTER PROCEDURE [dbo].[insert_department]
    @Name [varchar](100)
AS
BEGIN
    INSERT [dbo].[Departments]([Name])
    VALUES (@Name)

    DECLARE @DeptId int

    SELECT @DeptId = [DeptId]
    FROM [dbo].[Departments]
    WHERE @@ROWCOUNT > 0 AND [DeptId] = SCOPE_IDENTITY()

    SELECT t0.[DeptId]
    FROM [dbo].[Departments] AS t0
    WHERE @@ROWCOUNT > 0 AND t0.[DeptId] = @DeptId
END

系类:

public class Department
{
    public int DepartmentId { get; set; }       
    public string Name { get; set; }
}

modelBuilder 
.Entity<Department>() 
.MapToStoredProcedures(s => 
s.Update(u => u.HasName("modify_department") 
               .Parameter(b => b.Department, "department_id") 
               .Parameter(b => b.Name, "department_name")) 
 .Delete(d => d.HasName("delete_department") 
               .Parameter(b => b.DepartmentId, "department_id")) 
 .Insert(i => i.HasName("insert_department") 
               .Parameter(b => b.Name, "department_name")));

protected void btnSave_Click(object sender, EventArgs e)
{
    string department = txtDepartment.text.trim();

    // here I want to call the stored procedure to insert values
}

我的问题是:如何调用存储过程并将参数传递给它?

当前回答

在MYsql中创建Procedure。

delimiter //
create procedure SP_Dasboarddata(fromdate date, todate date)
begin
select count(Id) as count,date,status,sum(amount) as amount from 
details
where (Emidate between fromdate and todate)
group by date ,status;
END;
//

创建包含存储过程返回结果集值的类

[Table("SP_reslutclass")]
public  class SP_reslutclass
{
    [Key]
    public int emicount { get; set; }
    public DateTime Emidate { get; set; }
    public int ? Emistatus { get; set; }
    public int emiamount { get; set; }

}

在Dbcontext中添加Class

  public  class ABCDbContext:DbContext
{
    public ABCDbContext(DbContextOptions<ABCDbContext> options)
       : base(options)
    {

    }

 public DbSet<SP_reslutclass> SP_reslutclass { get; set; }
}

在存储库中调用实体

   var counts = _Dbcontext.SP_reslutclass.FromSql("call SP_Dasboarddata 
                    ('2019-12-03','2019-12-31')").ToList();

2019-12-04 02:53:23

其他回答

您所要做的就是创建一个对象，该对象具有与存储过程返回的结果相同的属性名。对于以下存储过程:

    CREATE PROCEDURE [dbo].[GetResultsForCampaign]  
    @ClientId int   
    AS
    BEGIN
    SET NOCOUNT ON;

    SELECT AgeGroup, Gender, Payout
    FROM IntegrationResult
    WHERE ClientId = @ClientId
    END

创建一个类，如下所示:

    public class ResultForCampaign
    {
        public string AgeGroup { get; set; }

        public string Gender { get; set; }

        public decimal Payout { get; set; }
    }

然后调用该过程，执行以下操作:

    using(var context = new DatabaseContext())
    {
            var clientIdParameter = new SqlParameter("@ClientId", 4);

            var result = context.Database
                .SqlQuery<ResultForCampaign>("GetResultsForCampaign @ClientId", clientIdParameter)
                .ToList();
    }

结果将包含ResultForCampaign对象的列表。您可以根据需要使用任意多的参数调用SqlQuery。

2014-08-21 14:30:11

您可以在DbContext类中调用存储过程，如下所示。

this.Database.SqlQuery<YourEntityType>("storedProcedureName",params);

但是如果您的存储过程返回多个结果集作为示例代码，那么您可以在MSDN上看到这篇有用的文章

具有多个结果集的存储过程

2014-01-03 19:10:01

这是EF (DB first)在DbContext类中生成的:

public ObjectResult<int> Insert_Department(string department)
{
    var departmentParameter = new ObjectParameter("department", department);

    return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<int>("insert_department", departmentParameter);
}

2017-02-19 19:01:26

当EDMX创建时，如果你在表选择选项中选择存储过程，那么只需使用过程名调用存储过程…

var num1 = 1; 
var num2 = 2; 

var result = context.proc_name(num1,num2).tolist();// list or single you get here.. using same thing you can call insert,update or delete procedured.

2018-04-25 10:47:19

首先使用MySql和实体框架代码

public class Vw_EMIcount
{
    public int EmiCount { get; set; }
    public string Satus { get; set; }
}

var result = context.Database.SqlQuery<Vw_EMIcount>("call EMIStatus('2018-3-01' ,'2019-05-30')").ToList();

2019-05-22 09:26:24

如何在实体框架6中调用存储过程(代码优先)?

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