在实体框架中使用存储过程 [英] using stored procedure in entity framework

问题描述

我正在使用asp.net mvc 5 和C# 与实体框架...我有模型和域类的功能...现在我需要使用存储过程...我在运动中挣扎.

I am using asp.net mvc 5 and C# with Entity Framework... I have model and domain classes for function... now I need to use stored procedure.... which I am struggling at the movement.

我首先遵循现有数据库的代码，并且在那里编写了存储过程.我的问题是如何在我的 Web 应用程序中调用该存储过程.

I am following code first existing database and I have stored procedure written there. My question is how I can call that stored procedure in my web application.

存储过程:

ALTER PROCEDURE [dbo].[GetFunctionByID](
    @FunctionId INT
)
AS
BEGIN
    SELECT * 
    FROM Functions As Fun
    WHERE Function_ID = @FunctionId
END

域类:

 public class Functions
 {
    public Functions()
    {
    }

    public int Function_ID { get; set; }
    public string Title { get; set; }
    public int Hierarchy_level { get; set; }
}

功能模型:

[Table("Functions")]
public class App_Functions
{
    public App_Functions()
    {
    }

    [Key]
    public int Function_ID { get; set; }

    [StringLength(50)]
    [Required]
    public string Title { get; set; }

    public int Hierarchy_level { get; set; }
    //public virtual ICollection<App_Controllers> App_Controllers { get; set; }*/
}

基本上下文:

public class BaseContext<TContext> : DbContext where TContext : DbContext
{
    static BaseContext()
    {
        Database.SetInitializer<TContext>(null);
    }

    protected BaseContext()
        : base("name = ApplicationDbConnection")
    { }
}

函数上下文:

public class FunctionsContext : BaseContext<FunctionsContext>
{
    public DbSet<App_Functions> Functions { get; set; }
}

推荐答案

您需要创建一个包含所有存储过程属性的模型类，如下所示.也因为实体框架模型类需要主键，你可以使用 Guid 创建一个假键.

You need to create a model class that contains all stored procedure properties like below. Also because Entity Framework model class needs primary key, you can create a fake key by using Guid.

public class GetFunctionByID
{
    [Key]
    public Guid? GetFunctionByID { get; set; }

    // All the other properties.
}

然后在您的 DbContext 中注册 GetFunctionByID 模型类.

then register the GetFunctionByID model class in your DbContext.

public class FunctionsContext : BaseContext<FunctionsContext>
{
    public DbSet<App_Functions> Functions { get; set; }
    public DbSet<GetFunctionByID> GetFunctionByIds {get;set;}
}

当您调用存储过程时，请参见以下内容:

When you call your stored procedure, just see below:

var functionId = yourIdParameter;
var result =  db.Database.SqlQuery<GetFunctionByID>("GetFunctionByID @FunctionId", new SqlParameter("@FunctionId", functionId)).ToList());

这篇关于在实体框架中使用存储过程的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！