[HELP]Problem in SaveChar

i have this in DataBase.cs Ln:1373 to ln:1388:

Code:

public static void SaveChar(Character Charr)
        {
            try
            {
                Charr.PackInventory();
                Charr.PackEquips();
                Charr.PackSkills();
                Charr.PackProfs();
                Charr.PackWarehouses();
                Charr.PackEnemies();
                Charr.PackFriends();

                MySqlCommand Command = new MySqlCommand("UPDATE `Characters` SET `CharName` = '" + Charr.Name + "', `Level` = " + Charr.Level + ",`Exp` = " + Charr.Exp + ",`GuildDonation` = " + Charr.GuildDonation + ",`Strength` = " + Charr.Str + ",`Agility` = " + Charr.Agi + ",`Vitality` = " + Charr.Vit + ",`Spirit` = " + Charr.Spi + ",`Job` = " + Charr.Job + ",`Model` = " + Charr.Model + ",`Money` = " + Charr.Silvers + ",`CPs` = " + Charr.CPs + ",`CurrentHP` = " + Charr.CurHP + ",`StatPoints` = " + Charr.StatP + ",`MyGuild` = " + Charr.GuildID + ",`GuildPos` = " + Charr.GuildPosition + ",`LocationMap` = " + Charr.LocMap + ",`LocationX` = " + Charr.LocX + ",`LocationY` = " + Charr.LocY + ",`Hair` = " + Charr.Hair + ",`Equipment` = '" + Charr.PackedEquips + "',`Inventory` = '" + Charr.PackedInventory + "',`PKPoints` = " + Charr.PKPoints + ",`PrevMap` = " + Charr.PrevMap + ", `Skills` = '" + Charr.PackedSkills + "', `Profs` = '" + Charr.PackedProfs + "',`RBCount` = " + Charr.RBCount + ",`Avatar` = " + Charr.Avatar + ",`WHMoney` = " + Charr.WHSilvers + ",`VP` = " + Charr.VP + ",`Warehouses` = '" + Charr.PackedWHs + "',`Friends` = '" + Charr.PackedFriends + "',`Enemies` = '" + Charr.PackedEnemies + "' WHERE `Account` = '" + Charr.MyClient.Account + "'", Connection);
                Command.ExecuteNonQuery();

            }
            catch (Exception Exc) { General.WriteLine(Convert.ToString(Exc)); }
        }

and in my console why i this text:

Code:

System.InvalidOperationException: Connection must be valid and open
at Mysql.Data.Mysqlclient.MysqlCommand.checkstate<>
at mysql.data.mysqlclient.mysqlcommand.executenonquer y<>
at CoServer_project.Database.saveChar<Character Charr> in ... database.cs:line 1386

this problem don't save Characters... if online... :(

can you help me?
tks