public override string Execute(string sourceText, CommandParameters parameters)
        {
            if (string.IsNullOrEmpty(parameters.FirstBorder) || string.IsNullOrEmpty(parameters.SecondBorder))
            {
                throw new SimpleEditException((string)App.Current.FindResource("ErrorCommandParametersEmpty"));
            }

            int LastFromIndex = 0;
            int LastToIndex = 0;
            int NextIndex = 0;
            string From = parameters.FirstBorder;
            string To = parameters.SecondBorder;
            int FromLength = From.Length;
            int ToLength = To.Length;
            bool IsChanged = false;

            do
            {
                // FROM
                Match matchFrom = FindNextMatch(From, sourceText, NextIndex, parameters);

                if (matchFrom.Success)
                    LastFromIndex = matchFrom.Index;
                else
                    break;

                // TO
                Match matchTo = FindNextMatch(To, sourceText, LastFromIndex + FromLength, parameters);

                if (matchTo.Success)
                    LastToIndex = matchTo.Index;
                else
                    break;

                // Is need to include parameters to replace
                if (parameters.IncludeParameters == true)
                {
                    sourceText = ReplaceSubstring(sourceText, parameters.TextToAppend, LastFromIndex, LastToIndex + ToLength);
                    NextIndex = LastFromIndex + parameters.TextToAppend.Length;
                }
                else
                {
                    sourceText = ReplaceSubstring(sourceText, parameters.TextToAppend, LastFromIndex + FromLength, LastToIndex);
                    NextIndex = LastFromIndex + parameters.TextToAppend.Length + FromLength + ToLength;
                }
                IsChanged = true;
                _loopsCounter++;

                if (_loopsCounter > 1000000 && !IsChanged)
                {
                    throw new SimpleEditException((string)App.Current.FindResource("TextNotFoundError"));
                }

            } while (true);

            if (IsChanged == false)
                throw new SimpleEditException((string)App.Current.FindResource("TextNotFoundError"));

            return sourceText;
        }

        protected void SaveButton_Click(object sender, EventArgs e)
        {
            if (!String.IsNullOrEmpty(ClassName))
            {
                MetaClass mc = MetaDataWrapper.GetMetaClassByName(ClassName);

                HistoryMetaClassInfo historyInfo = HistoryManager.GetInfo(mc);
                historyInfo.SelectedFields.Add(FieldList.SelectedValue);
                HistoryManager.SetInfo(mc, historyInfo);

                ListViewProfile[] mas = ListViewProfile.GetSystemProfiles(HistoryManager.GetHistoryMetaClassName(ClassName), "ItemHistoryList");
                if (mas.Length == 0)
                {
                    CHelper.GetHistorySystemListViewProfile(HistoryManager.GetHistoryMetaClassName(ClassName), "ItemHistoryList");
                    mas = ListViewProfile.GetSystemProfiles(HistoryManager.GetHistoryMetaClassName(ClassName), "ItemHistoryList");
                }
                if (!mas[0].FieldSet.Contains(FieldList.SelectedValue))
                {
                    mas[0].FieldSet.Add(FieldList.SelectedValue);
                    mas[0].ColumnsUI.Add(new ColumnProperties(FieldList.SelectedValue, "150px", String.Empty));
                    ListViewProfile.SaveSystemProfile(HistoryManager.GetHistoryMetaClassName(ClassName), "ItemHistoryList", Mediachase.IBN.Business.Security.CurrentUser.UserID, mas[0]);
                }

                CommandParameters cp = new CommandParameters(CommandName);
                Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());
                //CHelper.UpdateModalPopupContainer(this, ContainerId);
                //CHelper.RequireDataBind();
            }
        }

        protected void SaveButton_ServerClick(object sender, EventArgs e)
        {
            AssignmentEntity assignment = (AssignmentEntity)BusinessManager.Load(AssignmentEntity.ClassName, AssignmentId);
            if (assignment != null)
            {
                assignment.Subject = SubjectText.Text;
                if (DueDatePicker.SelectedDate != DateTime.MinValue)
                    assignment.PlanFinishDate = DueDatePicker.SelectedDate;
                else
                    assignment.PlanFinishDate = null;
                BusinessManager.Update(assignment);
            }

            // Close popup
            if (!String.IsNullOrEmpty(Request["closeFramePopup"]))
            {
                CommandParameters cp = new CommandParameters();
                if (Request["ReturnCommand"] != null)
                    cp.CommandName = Request["ReturnCommand"];
                Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterCloseOpenedFrameScript(this.Page, string.Empty, true);
            }
            else
            {
                Page.ClientScript.RegisterStartupScript(this.GetType(), Guid.NewGuid().ToString(),
                    "<script language='javascript'>" +
                    "try {window.opener.location.href=window.opener.location.href;}" +
                    "catch (e){} window.close();</script>");
            }
        }

        public void Execute(MessageSender source, IrcMessage message, CommandParameters parameters)
        {
            if (parameters.Count == 0 || parameters.Count > 1)
                throw new ParameterException();

            bot.PartChannel(parameters[0]);
        }

        public void Invoke(object sender, object element)
        {
            if (element is CommandParameters)
            {
                CommandParameters cp = (CommandParameters)element;
                //if (!cp.CommandArguments.ContainsKey("ControlId"))
                //    throw new ArgumentNullException("CommandParameters.ControlId @ GoogleGadgetRefresh");

                //string _cid = cp.CommandArguments["ControlId"];
                if (HttpContext.Current.Session["ControlId"] == null)
                    throw new ArgumentNullException("Session.ControlId @ GoogleGadgetRefresh");

                string _cid = HttpContext.Current.Session["ControlId"].ToString();
                string id = MetaViewGroupUtil.GetIdFromUniqueKey(cp.CommandArguments["primaryKeyId"]);
                HttpRequest request = HttpContext.Current.Request;

                if (request != null)
                {
                    GoogleGadgetEntity gge = (GoogleGadgetEntity)BusinessManager.Load("GoogleGadget", PrimaryKeyId.Parse(id));
                    ControlProperties.Provider.SaveValue(_cid, "PageSource", id);

                    if (gge != null)
                        ControlProperties.Provider.SaveValue(_cid, ControlProperties._titleKey, CHelper.GetResFileString(gge.Title));

                    CommandParameters cp2 = new CommandParameters("MC_GG_SelectItem");
                    Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterCloseOpenedFrameScript(((CommandManager)sender).Page, cp2.ToString());
                    //((CommandManager)sender).Page.ClientScript.RegisterClientScriptBlock(this.GetType(), Guid.NewGuid().ToString(), "", true);

                }
            }
        }

        public override string Execute(string sourceText, CommandParameters parameters)
        {
            if (string.IsNullOrEmpty(parameters.TextToAppend))
                throw new SimpleEditException((string)App.Current.FindResource("ErrorCommandParametersEmpty"));

            // Escape from special symbols.
            string TextToRemove = Regex.Escape(parameters.TextToAppend);
            Regex regText;
            // Case check
            if (parameters.IsCaseSensitive == false)
                regText = new Regex(TextToRemove, RegexOptions.Multiline | RegexOptions.IgnoreCase);
            else
                regText = new Regex(TextToRemove, RegexOptions.Multiline);

            // Generate Match collection: find all occurrences of TextToRemove in sourceText.
            MatchCollection mc = regText.Matches(sourceText);
            if (mc.Count <= 0)
                throw new SimpleEditException((string)App.Current.FindResource("TextNotFoundError"));

            int SearchTemplateLength = TextToRemove.Length;
            // Remove text in all occurrences.
            int Index = 0;
            int IndexAdd = 0; //every time we remove text, indexes changes
            foreach (Match match in mc)
            {
                Index = match.Index + IndexAdd;
                sourceText = sourceText.Remove(Index, SearchTemplateLength);
                IndexAdd -= SearchTemplateLength;
            }

            return sourceText;
        }

        public override string Execute(string sourceText, CommandParameters parameters)
        {
            //create regular expression object from Text
            string resultText = string.Empty;

            if (parameters.TextToAppend != string.Empty && parameters.FirstBorder != string.Empty)
            {
                //escape from special symbols
                string TextToReplace = Regex.Escape(parameters.FirstBorder);

                Regex regText;
                // Case check
                if (parameters.IsCaseSensitive == false)
                    regText = new Regex(TextToReplace, RegexOptions.Multiline | RegexOptions.IgnoreCase);
                else
                    regText = new Regex(TextToReplace, RegexOptions.Multiline);

                resultText = regText.Replace(sourceText, parameters.TextToAppend);

                if(sourceText.CompareTo(resultText) == 0)
                    throw new SimpleEditException((string)App.Current.FindResource("TextNotFoundError"));
            }
            else
                throw new SimpleEditException((string)App.Current.FindResource("ErrorCommandParametersEmpty"));

            return resultText;
        }

 void btnCancel_Click(object sender, EventArgs e)
 {
     CommandParameters cp = new CommandParameters(Request["CommandName"]);
     cp.CommandArguments = new Dictionary<string, string>();
     cp.AddCommandArgument("Uid", "null");
     CommandHandler.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());
 }

        protected void OkButton_Click(object sender, EventArgs e)
        {
            string refreshCommand = Mediachase.Ibn.Web.UI.WebControls.CommandHandler.GetRefreshCommand(this.Page);
            string paramString = String.Empty;

            if (!String.IsNullOrEmpty(refreshCommand))
            {
                CommandParameters cp = new CommandParameters(refreshCommand);
                cp.CommandArguments = new Dictionary<string, string>();
                cp.AddCommandArgument("DeleteType", DeleteTypeList.SelectedValue);

                if (ObjectId != PrimaryKeyId.Empty)
                {
                    cp.AddCommandArgument("ObjectId", ObjectId.ToString());
                    paramString = cp.ToString();
                }
                else if (Request.QueryString["GridId"] != null)
                {
                    cp.AddCommandArgument("GridId", Request.QueryString["GridId"]);
                    paramString = cp.ToString();
                }
                else
                {
                    paramString = String.Empty;
                }
            }
            Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterCloseOpenedFrameScript(this.Page, paramString);
        }

 protected void AddButton_Click(object sender, EventArgs e)
 {
     if (Process())
     {
         CommandParameters cp = new CommandParameters("MC_TimeTracking_QuickAddManagerFrame");
         Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterRefreshParentFromFrameScript(this.Page, cp.ToString());
     }
 }

 protected void btnExport_Click(object sender, EventArgs e)
 {
     CommandParameters cp = new CommandParameters(_refreshCommand);
     cp.CommandArguments = new System.Collections.Generic.Dictionary<string, string>();
     cp.AddCommandArgument("Type", _type);
     cp.AddCommandArgument("Variant", rbList.SelectedValue);
     Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());
 }

 void btnOnlyThis_Click(object sender, EventArgs e)
 {
     PrimaryKeyId pKey = PrimaryKeyId.Parse(Request["ObjectId"]);
     CommandParameters cp = new CommandParameters(Request["CommandName"]);
     cp.CommandArguments = new Dictionary<string, string>();
     cp.AddCommandArgument("Uid", pKey.ToString());
     CommandHandler.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());
 }

        private string GetPassword(CommandParameters parameters)
        {
            var password = "";
            if (parameters.Count > 1)
                password = parameters[1];

            return password;
        }

        public void Execute(MessageSender executor, IrcMessage message, CommandParameters parameters)
        {
            if (parameters.Count == 0)
                return;

            var sendToServerMessage = GetParametersInOneSentence(parameters);

            bot.SendToServer(sendToServerMessage);
        }

        void btnSave_ServerClick(object sender, EventArgs e)
        {
            Mediachase.IBN.Business.PortalConfig.MdsDeliveryTimeout = int.Parse(txtDeliveryTimeout.Text) * 24 * 60;
            Mediachase.IBN.Business.PortalConfig.MdsMaxDeliveryAttempts = int.Parse(txtAttempts.Text);
            Mediachase.IBN.Business.PortalConfig.MdsDeleteOlderMoreThan = int.Parse(txtLogPeriod.Text) * 24 * 60;

            CommandParameters cp = new CommandParameters("MC_MUI_ChangeSettings");
            CommandHandler.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());
        }

        protected void Add_Click(object sender, System.EventArgs e)
        {
            int RelProjectId = int.Parse(hdnProjectId.Value);
            if (ProjectId > 0 && ProjectId != RelProjectId)
                Project2.AddRelation(ProjectId, RelProjectId);

            CommandParameters cp = new CommandParameters("MC_PM_Redirect");
            Mediachase.Ibn.Web.UI.WebControls.CommandHandler.RegisterCloseOpenedFrameScript(this.Page, cp.ToString());
        }

        public void Execute(MessageSender source, IrcMessage message, CommandParameters parameters)
        {
            if (parameters == null || parameters.Count == 0)
                return;

            var sayToMessage = GetMessageFromParameters(parameters);

            bot.SayTo(source.Channel, sayToMessage);
        }

        public void Execute(MessageSender executor, IrcMessage message, CommandParameters parameters)
        {
            var commands = bot.GetAllCommands();

            foreach (var command in commands)
            {
                bot.SayTo(executor.Channel, command.GetKeyWord());
            }
        }

        public static void CommandMain(CommandParameters parameters, ICommandExecutor executor)
        {
            var targets = from Character c in executor.Server.Characters where c.Name == parameters.Get<string>(0) select c;
            if (targets.Count() == 0)
                throw new Exception("Target not found");
            Character target = targets.First<Character>();

            String title = parameters.Get<String>(1, "");
            target.Title = title;
        }

 private string GetParametersInOneSentence(CommandParameters parameters)
 {
     var sendToServerMessage = new StringBuilder();
     foreach (var parameter in parameters)
     {
         sendToServerMessage.Append(parameter);
         sendToServerMessage.Append(" ");
     }
     return sendToServerMessage.ToString().TrimEnd();
 }