System.Data.SqlClient.SqlCommand.Dispose C# (CSharp) Метод

        override protected void Dispose(bool disposing) { }
    }

    public static string InsUpdDel(string query)
    {
        SqlConnection sqlcon = new SqlConnection(connstring);

        SqlCommand sqlcom = new SqlCommand(query, sqlcon);
        //sqlcom.CommandType = CommandType.Text;
        sqlcon.Open();
        try
        {
            // string connstring = ConfigurationManager.ConnectionStrings["connid"].ToString(); //ConfigurationManager.AppSettings["connid"];
            

            sqlcom.ExecuteNonQuery();

            query = "";
            sqlcom.Dispose();
            sqlcon.Close();
            return "true";
        }
        catch(Exception prajwol)
        {
            query = "";
            sqlcom.Dispose();
            sqlcon.Close();
            return prajwol.Message.ToString();
        }
    }