using stored procedure in entity framework - asp.net-mvc

Question

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.
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.
Stored procedure:
ALTER PROCEDURE [dbo].[GetFunctionByID](
#FunctionId INT
)
AS
BEGIN
SELECT *
FROM Functions As Fun
WHERE Function_ID = #FunctionId
END
Domain class:
public class Functions
{
public Functions()
{
}
public int Function_ID { get; set; }
public string Title { get; set; }
public int Hierarchy_level { get; set; }
}
Function model:
[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; }*/
}
BaseContext:
public class BaseContext<TContext> : DbContext where TContext : DbContext
{
static BaseContext()
{
Database.SetInitializer<TContext>(null);
}
protected BaseContext()
: base("name = ApplicationDbConnection")
{ }
}
Function context:
public class FunctionsContext : BaseContext<FunctionsContext>
{
public DbSet<App_Functions> Functions { get; set; }
}

Answer 1

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.
}
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;}
}
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());

Answer 2

After importing stored procedure, you can create object of stored procedure pass the parameter like function
using (var entity = new FunctionsContext())
{
var DBdata = entity.GetFunctionByID(5).ToList<Functions>();
}
or you can also use SqlQuery
using (var entity = new FunctionsContext())
{
var Parameter = new SqlParameter {
ParameterName = "FunctionId",
Value = 5
};
var DBdata = entity.Database.SqlQuery<Course>("exec GetFunctionByID #FunctionId ", Parameter).ToList<Functions>();
}

Answer 3

You can call a stored procedure using SqlQuery (See here)
// Prepare the query
var query = context.Functions.SqlQuery(
"EXEC [dbo].[GetFunctionByID] #p1",
new SqlParameter("p1", 200));
// add NoTracking() if required
// Fetch the results
var result = query.ToList();

Answer 4

// Add some tenants to context so we have something for the procedure to return!
AddTenentsToContext(Context);
// ACT
// Get the results by calling the stored procedure from the context extention method
var results = Context.ExecuteStoredProcedure(procedure);
// ASSERT
Assert.AreEqual(expectedCount, results.Count);
}

Answer 5

Mindless passenger has a project that allows you to call a stored proc from entity frame work like this....
using (testentities te = new testentities())
{
//-------------------------------------------------------------
// Simple stored proc
//-------------------------------------------------------------
var parms1 = new testone() { inparm = "abcd" };
var results1 = te.CallStoredProc<testone>(te.testoneproc, parms1);
var r1 = results1.ToList<TestOneResultSet>();
}
... and I am working on a stored procedure framework (here) which you can call like in one of my test methods shown below...
[TestClass]
public class TenantDataBasedTests : BaseIntegrationTest
{
[TestMethod]
public void GetTenantForName_ReturnsOneRecord()
{
// ARRANGE
const int expectedCount = 1;
const string expectedName = "Me";
// Build the paraemeters object
var parameters = new GetTenantForTenantNameParameters
{
TenantName = expectedName
};
// get an instance of the stored procedure passing the parameters
var procedure = new GetTenantForTenantNameProcedure(parameters);
// Initialise the procedure name and schema from procedure attributes
procedure.InitializeFromAttributes();
// Add some tenants to context so we have something for the procedure to return!
AddTenentsToContext(Context);
// ACT
// Get the results by calling the stored procedure from the context extention method
var results = Context.ExecuteStoredProcedure(procedure);
// ASSERT
Assert.AreEqual(expectedCount, results.Count);
}
}
internal class GetTenantForTenantNameParameters
{
[Name("TenantName")]
[Size(100)]
[ParameterDbType(SqlDbType.VarChar)]
public string TenantName { get; set; }
}
[Schema("app")]
[Name("Tenant_GetForTenantName")]
internal class GetTenantForTenantNameProcedure
: StoredProcedureBase<TenantResultRow, GetTenantForTenantNameParameters>
{
public GetTenantForTenantNameProcedure(
GetTenantForTenantNameParameters parameters)
: base(parameters)
{
}
}
If either of those two approaches are any good?

Answer 6

Simple. Just instantiate your entity, set it to an object and pass it to your view in your controller.
Entity
VehicleInfoEntities db = new VehicleInfoEntities();
Stored Procedure
dbo.prcGetMakes()
or
you can add any parameters in your stored procedure inside the brackets ()
dbo.prcGetMakes("BMW")
Controller
public class HomeController : Controller
{
VehicleInfoEntities db = new VehicleInfoEntities();
public ActionResult Index()
{
var makes = db.prcGetMakes(null);
return View(makes);
}
}