如何在实体框架 6(代码优先)中调用存储过程? [英] How to call Stored Procedure in Entity Framework 6 (Code-First)?

问题描述

我对 Entity Framework 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:

I am very new to Entity Framework 6 and I want to implement stored procedures in my project. I have a stored procedure as follows:

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

部门类:

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?

My problem is: how can I call the stored procedure and pass parameters into it?

推荐答案

您可以在 DbContext 类中调用存储过程，如下所示.

You can call a stored procedure in your DbContext class as follows.

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您的示例代码，那么您可以在 MSDN 上看到这篇有用的文章

But if your stored procedure returns multiple result sets as your sample code, then you can see this helpful article on MSDN

具有多个结果集的存储过程

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