WFA_psychometric_chart.Form1_main.InsertIntoDeviceInfoDB C# (CSharp) Method

InsertIntoDeviceInfoDB() public method

public InsertIntoDeviceInfoDB ( string nodeid, string deviceinstance, string deviceip, string param1id, string param2id, string param1info, string param2info, string param1type, string param2type ) : void
nodeid string
deviceinstance string
deviceip string
param1id string
param2id string
param1info string
param2info string
param1type string
param2type string
return void
        public void InsertIntoDeviceInfoDB(string nodeid,string deviceinstance,string deviceip,string param1id,string param2id,string param1info,string param2info,string param1type,string param2type)
        {                                 
                                                
            string databasePath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            string databaseFile = databasePath + @"\db_psychrometric_project.s3db";
            string connString = @"Data Source=" + databaseFile + ";Version=3;";            
            string tableNameDevice = "tbl_" + selectedBuildingList[0].BuildingName + "_device_info_for_node";//currentNodeTableFromDB; 
                                                                               
            //checking if the data is present or not
            SQLiteDataReader reader = null;
            string queryString = "SELECT *  from " + tableNameDevice + " WHERE nodeID = @id";

            bool flag = false;
            using (SQLiteConnection cxn = new SQLiteConnection(connString))
            {
                cxn.Open();
                SQLiteCommand command = new SQLiteCommand(queryString, cxn);

                command.Parameters.AddWithValue("@id", nodeid);//This is the group id that is used to identify each node
                reader = command.ExecuteReader();
                while (reader.Read())
                {
                    if (reader["nodeID"].ToString() != "")
                    {
                        flag = true;
                    }
                }   //Close of while

            } //Close of using



            if (flag == false)
            { 
                //insert the value 

                using (SQLiteConnection connection = new SQLiteConnection(connString))
                {
                    connection.Open();
                    //SQLiteDataReader reader = null;
                  //  MessageBox.Show("Insert the node value flag = false wala and id  = "+nodeid);
                    string sql_string = "insert into " + tableNameDevice + "(nodeID,device_instanceID,IP,param1ID,param2ID,param1_info,param2_info,param1_identifier_type,param2_identifier_type) VALUES(@id,@instanceID,@IP,@param1,@param2,@param1info, @param2info, @param1_iden_type, @param2_iden_type)";
                    SQLiteCommand command = new SQLiteCommand(sql_string, connection);
                    command.CommandType = CommandType.Text;

                    command.Parameters.AddWithValue("@id", nodeid);
                    command.Parameters.AddWithValue("@instanceID", deviceinstance);
                    command.Parameters.AddWithValue("@IP", deviceip);
                    command.Parameters.AddWithValue("@param1", param1id);
                    command.Parameters.AddWithValue("@param2", param2id);
                    command.Parameters.AddWithValue("@param1info", param1info);
                    command.Parameters.AddWithValue("@param2info", param2info);
                    command.Parameters.AddWithValue("@param1_iden_type", param1type);
                    command.Parameters.AddWithValue("@param2_iden_type", param2type);
                    command.ExecuteNonQuery();
                }
            }
            else
            {
                //Update the value
                using (SQLiteConnection connection = new SQLiteConnection(connString))
                {
                    connection.Open();
                    //SQLiteDataReader reader = null;
                  //  MessageBox.Show("Update mechanism the node value flag = true  wala,id = "+nodeid);

                    string sql_string = "UPDATE  " + tableNameDevice + "  SET device_instanceID = @instanceID,IP =@IP ,param1ID = @param1 ,param2ID = @param2,param1_info = @param1info,param2_info = @param2info,param1_identifier_type= @param1_iden_type,param2_identifier_type= @param2_iden_type where nodeID = @id ";
                    SQLiteCommand command = new SQLiteCommand(sql_string, connection);
                    command.CommandType = CommandType.Text;
                     command.Parameters.AddWithValue("@id", nodeid);
                    command.Parameters.AddWithValue("@instanceID", deviceinstance);
                    command.Parameters.AddWithValue("@IP", deviceip);
                    command.Parameters.AddWithValue("@param1", param1id);
                    command.Parameters.AddWithValue("@param2", param2id);
                    command.Parameters.AddWithValue("@param1info", param1info);
                    command.Parameters.AddWithValue("@param2info", param2info);
                    command.Parameters.AddWithValue("@param1_iden_type", param1type);
                    command.Parameters.AddWithValue("@param2_iden_type", param2type);
                    command.ExecuteNonQuery();
                }

            }


        }
Form1_main