Get output parameter value of a stored procedure using EF Core?

Question

I am using Asp.net core and EF core in my application. Basically I want to get multiple result set from a single stored procedure. Tried to search it for last 2 days no such

Answer 1

This should work. This time I filled only a DataTable, but you can fill a DataSet with multiples DataTables

using (SqlConnection connection  = new SqlConnection(_customerContext.Database.Connection.ConnectionString))
                {
                    SqlCommand cmd = new SqlCommand("dbo.usp_CustomerAll_sel", connection);
                    cmd.CommandType = CommandType.StoredProcedure;

                    cmd.Parameters.Add(new SqlParameter("@SomeOutput", SqlDbType.BigInt) { Direction = ParameterDirection.Output, Value = -1 });

                    if (cmd.Connection.State != ConnectionState.Open)
                    {
                        cmd.Connection.Open();
                    }


                    connection.Open();
                    SqlDataAdapter adapter = new SqlDataAdapter(cmd);
                    DataTable dt = new DataTable();
                    adapter.Fill(dt);

                    long SomeOutput = (long)cmd.Parameters["@SomeOutput"].Value;

                    connection.Close();
                }

Since you can't use SqlDataAdapter in .net core, you can use a third party library to archieve the same result, like NReco.Data , actually, the code is pretty similar.