בעיה בהצגת נתונים מview של mysql

public string GetLoansFromTable(string email)
{


string json = "";

using (MySqlConnection conn = new MySqlConnection(myconnectionstring))
{
using (MySqlCommand comm = new MySqlCommand("SP_GetAdminLoans", conn))
{
comm.CommandType = CommandType.StoredProcedure;
comm.Parameters.Add("@em", MySqlDbType.VarChar).Value = email;
conn.Open();
MySqlDataReader datareader = comm.ExecuteReader();


json = ConvertDatareaderToJsonString(datareader);
conn.Close();
}
}
return json;
}