Ejemplo n.º 1
0
        //update, insert and delete data in database using stored procedure
        public int updateSP(String spName, Data data)
        {
            cmd = null;
            int result = 0;
            try
            {
                tran = conn.BeginTransaction();
                cmd = new SqlCommand();
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = spName;
                cmd.Connection = conn;
                cmd.Transaction = tran;
                String key = null;

                SqlDbType sType = SqlDbType.NVarChar;
                int size = -1;
                Object[] keys = data.getKeys();
                Object value = null;
                int length = keys.Length;
                //add parameters using keys
                if (keys != null)
                {
                    for (int i = 0; i < length; i++)
                    {
                        key = "@" + keys[i].ToString();
                        value = data.get(keys[i]);
                        size = data.getSize(key);
                        sType = data.getType(key);

                        if (size > 0)
                        {
                            cmd.Parameters.Add(key, sType);
                        }
                        else
                        {
                            cmd.Parameters.Add(key, sType, size);
                        }

                        cmd.Parameters[key].Value = value;

                    }
                }
                result = cmd.ExecuteNonQuery();
                tran.Commit();

            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);

                //Trace. (e.Message);
                tran.Rollback();

            }
            finally
            {
                if (cmd != null)
                {
                    cmd.Parameters.Clear();
                }

            }
            return result;
        }
Ejemplo n.º 2
0
        //select data from database using stored procedure
        public Data selectSP(String spName, Data data)
        {
            cmd = null;
            Data result = new Data();
            try
            {
                cmd = new SqlCommand();
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = spName;
                cmd.Connection = conn;

                String key = null;

                SqlDbType sType = SqlDbType.NVarChar;
                int size = -1;
                Object[] keys = data.getKeys();
                Object value = null;
                int now = 0;
                //add parameters using keys
                if (keys != null)
                {
                    int length = keys.Length;

                    for (int i = 0; i < length; i++)
                    {
                        key = "@" + keys[i].ToString();
                        value = data.get(keys[i]);
                        size = data.getSize(key);
                        sType = data.getType(key);

                        if (size > 0)
                        {
                            cmd.Parameters.Add(key, sType);
                        }
                        else
                        {
                            cmd.Parameters.Add(key, sType, size);
                        }

                        cmd.Parameters[key].Value = value;

                    }
                }
                // get query results
                rdr = cmd.ExecuteReader();

                //save result into Data
                while (rdr.Read())
                {
                    int fCount = rdr.FieldCount;
                    for (int i = 0; i < fCount; i++)
                    {
                        result.add(now, rdr.GetName(i), rdr.GetValue(i));
                    }
                    ++now;
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                result.ErrorMessage = e.Message;

            }
            finally
            {
                if (cmd != null)
                {
                    cmd.Parameters.Clear();
                }
                // close the reader
                if (rdr != null)
                {
                    rdr.Close();
                }
            }
            return result;
        }