Retrieve data in asp.net MVC from complex stored procedure which return multiple actual table - asp.net-mvc

Question

User Defined Stored Procedure which returns multiple actual table as result set.
CREATE PROCEDURE uspDemo(
#UserID BIGINT=0,
#IsAdmin bit=0,
#Title varchar(120)=''
)AS
BEGIN
------Retrieve Posts------
SELECT * FROM tblPost AS MP INNER JOIN tblUserProfile AS UP ON UP.ID=MP.UserID
WHERE UP.ID=#UserID AND ((#IsAdmin=0 AND MP.IsDeleted=0 AND MP.IsApproved=1)OR (#IsAdmin=1 OR MP.IsDeleted=0 OR MP.IsApproved=1))
----- Retrieve Tags------
SELECT * FROM tblTagMasters AS MT INNER JOIN tblPostTags AS MP ON MT.TagID= MP.TagID
--------Retrieve User likes-----
SELECT * FROM tblUserLikes AS UV INNER JOIN tblPost AS MP ON MP.PostId=UV.PostId
END
I want to convert into list format of all returned actual table from stored procedure according to model in asp.net MVC.
public List<PostView> GetPosts(int userID = 0, string s = "")
{
IEnumerable<PostView> query = null;
using (var db = new MVCDatabase())
{
var cmd = db.Database.Connection.CreateCommand();
cmd.CommandText = "[dbo].[uspDemo]";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("#UserID", userID));
cmd.Parameters.Add(new SqlParameter("#IsAdmin", 0));
cmd.Parameters.Add(new SqlParameter("#Title", s));
try
{
db.Database.Connection.Open();
using (var result = cmd.ExecuteReader())
{
var Posts = ((IObjectContextAdapter)db).ObjectContext.Translate<PostView>(result).ToList();
result.NextResult();
var tags = ((IObjectContextAdapter)db).ObjectContext.Translate<TagView>(result).ToList();
result.NextResult();
var uservotes = ((IObjectContextAdapter)db).ObjectContext.Translate<UserVoteView>(result).ToList();
Posts.ForEach(z =>
{
z.TagMaster = tags.Where(x => x.PostId == z.PostId).ToList();
z.UserLike = uservotes.Where(x => x.PostId == z.PostId).ToList();
});
query = Posts;
}
}
catch (Exception ex)
{
MSError.Trace(ex);
}
finally
{
db.Database.Connection.Close();
cmd.Dispose();
}
return query.ToList();
}
}
Throwing an ArgumentNullException
Help me to find out the solution.

Answer 1

Here is a demo how to do it. Using System.data and System.Linq you can do below.
var cmd = db.Database.Connection.CreateCommand();
cmd.CommandText = "[dbo].[uspDemo]";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("#UserID", userID));
cmd.Parameters.Add(new SqlParameter("#IsAdmin", 0));
cmd.Parameters.Add(new SqlParameter("#Title", s));
SqlDataAdapter da = new SqlDataAdapter(); //adapter
DataSet ds = new DataSet(); //dataset
cmd.CommandType = CommandType.StoredProcedure;
da = new SqlDataAdapter(cmd);
da.Fill(ds); //fill dataset with multiple select
var Posts = (from DataRow row in ds.Tables[0].Rows //0 means 1st select
select new Posts //Posts model to map
{
test = row["test"].ToString(), //test is the column name from select
test1 = Convert.ToDecimal(row["test1"])
}).ToList();
var Tags = (from DataRow row in ds.Tables[1].Rows //1 means 2nd select
select new Tags //Tags model to map
{
test = row["test"].ToString(), //test is the column name from select
test1 = Convert.ToDecimal(row["test1"])
}).ToList();
var User = (from DataRow row in ds.Tables[2].Rows //2 means 3rd select
select new User //User model to map
{
test = row["test"].ToString(), //test is the column name from select
test1 = Convert.ToDecimal(row["test1"])
}).ToList();