使用实体框架从存储过程中获取多个字符串输出

Question

The following stored procedure displays three strings and a table row result as output. Is there any way we can display all the results on a mvc view output panel using entity framework?

I could see the first string result in the code below. But is there anyway to get the other two select string outputs and the table row result.

private CustomerEntities db = new CustomerEntities();
        public ActionResult Index()
        {
            var results = db.usp_CustomerData("124544", 1500);
            var abc = results.ToList();
            return View();
        }

ALTER PROCEDURE [dbo].[usp_CustomerData]
@CustomerID varchar(6),
@MinsBack int
AS
BEGIN

    DECLARE @Count int
    SET @Count = (SELECT Count(*)
                    FROM Customer WITH (NOLOCK)
                    WHERE CustomerID = @CustomerID AND                       
                          DATEDIFF(mi, ReceivedAt, GETUTCDATE()) < @MinsBack)
    IF (@Count = 1)
        SELECT 'Ok:  1 message in Customer table'
    ELSE
        SELECT 'ERROR:  Expected 1 message in Customer table, but found ' + CONVERT(varchar(3), @Count) + ' messages.'


    SET @Count = (SELECT Count(*)
                    FROM CustomerDetails WITH (NOLOCK)
                    WHERE CustomerID = @CustomerID AND
                          DATEDIFF(mi, LastUpdatedAt, GETDATE()) < @MinsBack)
    IF (@Count = 1)
        SELECT 'Ok:  1 record in CustomerDetails table'
    ELSE
        SELECT 'ERROR:  Expected 1 record in CustomerDetails table, but found ' + CONVERT(varchar(3), @Count) + ' records.'


    SET @Count = (SELECT Count(*)
                    FROM CustomerProduct WITH (NOLOCK)
                    WHERE CustomerID = @CustomerID AND
                          DATEDIFF(mi, LastUpdatedAt, GETDATE()) < @MinsBack)
    IF (@Count = 1)
        SELECT 'Ok:  1 record in CustomerProduct table'
    ELSE
        SELECT 'ERROR:  Expected 1 record in CustomerProduct table, but found ' + CONVERT(varchar(3), @Count) + ' records.'

    SELECT *FROM Customer where customerID = @CustomerID

END

Answer 1

As suggestion you could create a temporary table in your SQL script which will be used as temporary store.

CREATE TABLE #Results
(
    Message VARCHAR(512)
)

Instead of a direct SELECT in each IF or ELSE you should insert the string into the temp table. At the end you could reach your goal to get all inserted strings to return them by:

SELECT * FROM #Results

To get customers - like you do at the end - you should trigger a new query to database.

Depending on your case you should consider to querying the database by data context instead of querying the database by store procedures.

Answer 2

You need to do something as suggest in this link but I summarized below

For each results set you will need to do a reader.NextResult();

var someReturnObject = new ResultObject();

using (var context = new LinqPadDbContext(@"Server=localhost\SQLEXPRESS;Database=StackOverflow;Trusted_Connection=True;"))
{
    var cmd = context.Database.Connection.CreateCommand();
    cmd.CommandText = "[dbo].[GetSomeData]";

    try
    {           
        context.Database.Connection.Open();

        var reader = cmd.ExecuteReader();

        var result1 = ((IObjectContextAdapter)context).ObjectContext.Translate<string>(reader);

        someResultObject.Text1 = result1.First();

        //for each extra result, start here
        reader.NextResult();

        var users = ((IObjectContextAdapter)context).ObjectContext.Translate<User>(reader);

        someResultObject.Users = users.Select(x => x);
        //stop here
    }
    finally
    {
        context.Database.Connection.Close();
    }
}