public CommandResult PasteFromFile()
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.InitialDirectory = GApp.Options.DefaultFileDir;
            dlg.Title = GApp.Strings.GetString("Util.SourceToLoad");
            dlg.Filter = "All Files(*.*)|*.*";
            ConnectionTag ct = GEnv.Connections.FindTag(_connection);
            if(ct.ModalTerminalTask!=null) return CommandResult.Denied;

            if(GCUtil.ShowModalDialog(GApp.Frame, dlg)==DialogResult.OK) {
                GApp.Options.DefaultFileDir = GUtil.FileToDir(dlg.FileName);
                try {
                    StreamReader re = new StreamReader(new FileStream(dlg.FileName, FileMode.Open, FileAccess.Read), _connection.Param.EncodingProfile.Encoding);
                    if(new FileInfo(dlg.FileName).Length > 0x1000) { //4KB�ȏ�͔񓯊�
                        SendingLargeText dlg2 = new SendingLargeText(new PasteProcessor(ct, re));
                        re.Close();
                        if(GCUtil.ShowModalDialog(GApp.Frame, dlg2)==DialogResult.OK)
                            return CommandResult.Success;
                        else
                            return CommandResult.Cancelled;
                    }
                    else {
                        PasteProcessor p = new PasteProcessor(ct, re);
                        p.Perform();
                        re.Close();
                    }
                    //GEnv.Frame.StatusBar.IndicateSendData();
                    return CommandResult.Success;
                }
                catch(Exception ex) {
                    GUtil.Warning(GEnv.Frame, ex.Message);
                    return CommandResult.Failed;
                }
            }
            else
                return CommandResult.Cancelled;
        }
        public override CommandResult Paste()
        {
            string value = (string)Clipboard.GetDataObject().GetData("Text");
            if(value==null || value.Length==0) return CommandResult.Ignored;

            ConnectionTag ct = GEnv.Connections.FindTag(_connection);
            if(ct.ModalTerminalTask!=null) return CommandResult.Denied;

            if(value.Length>0x1000) {
                SendingLargeText dlg = new SendingLargeText(new PasteProcessor(ct, value));
                if(GCUtil.ShowModalDialog(GApp.Frame, dlg)==DialogResult.OK)
                    return CommandResult.Success;
                else
                    return CommandResult.Cancelled;
            }
            else
                return PasteMain(value);
        }