using DevExpress.Data;
using DevExpress.Utils;
using DevExpress.Web;
using DevExpress.Web.ASPxThemes;
using DevExpress.Web.Mvc;
using GreenTree.Nachtragsmanagement.Core.Authentication;
using System;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace GreenTree.Nachtragsmanagement.Web.Extensions
{
    public static class GridViewSettingsHelper
    {
        /// <summary>
        /// Current user context
        /// </summary>
        public static UserContext _userContext = Core.CommonHelper.UserContext();

        /// <summary>
        /// Creates GridViewSettings for the site gridView
        /// </summary>
        /// <param name="html">Current HtmlHelper context.</param>
        public static GridViewSettings SiteGridViewSettings(this System.Web.Mvc.HtmlHelper html)
        {
            var s = new GridViewSettings();

            s.Name = "devGridViewSite";
            s.KeyFieldName = "Id";
            s.CallbackRouteValues = new { Controller = "Site", Action = "PartialSites" };
            s.Width = Unit.Percentage(100);
            s.Settings.ShowFilterRow = true;
            s.Settings.ShowFilterRowMenu = true;
            s.Settings.ShowFooter = true;
            s.Settings.ShowGroupPanel = true;
            s.Settings.AutoFilterCondition = AutoFilterCondition.Contains;
            s.Settings.VerticalScrollBarMode = ScrollBarMode.Auto;
            s.Settings.VerticalScrollableHeight =
                (html.ViewData["ScrollHeight"] == null || (int)html.ViewData["ScrollHeight"] == -1)
                ? 400
                : (int)html.ViewData["ScrollHeight"];
            s.SettingsExport.Landscape = true;
            s.SettingsExport.FileName = "Baustellenliste";
            s.SettingsPopup.CustomizationWindow.Width = new Unit(250, UnitType.Pixel);
            s.SettingsPopup.CustomizationWindow.Height = new Unit(350, UnitType.Pixel);
            s.SettingsBehavior.EnableCustomizationWindow = true;

            s.Toolbars.Add(t =>
            {
                var refreshItem = t.Items.Add(GridViewToolbarCommand.Refresh);
                refreshItem.Text = "Aktualisieren";
                var expandItem = t.Items.Add(GridViewToolbarCommand.FullExpand);
                expandItem.Text = "Alle aufklappen";
                var collapseItem = t.Items.Add(GridViewToolbarCommand.FullCollapse);
                collapseItem.Text = "Alle einklappen";
                var filterItem = t.Items.Add(GridViewToolbarCommand.ClearFilter);
                filterItem.Text = "Filter entfernen";
                t.Items.Add(i =>
                {
                    i.Text = "Spalten anzeigen / ausblenden";
                    i.Name = "ToggleColumnChooser";
                    i.Image.IconID = IconID.OtherViewgridlines16x16gray;
                    i.BeginGroup = true;
                });
                t.Items.Add(i =>
                {
                    i.Text = "Exportieren nach";
                    i.Image.IconID = IconID.ActionsDownload16x16office2013;
                    i.BeginGroup = true;
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Pdf";
                        exportitem.Text = "PDF";
                        exportitem.Image.IconID = IconID.ExportExporttopdf16x16office2013;
                    });
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Xlsx";
                        exportitem.Text = "XLSX";
                        exportitem.Image.IconID = IconID.ExportExporttoxlsx16x16office2013;
                    });
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Xls";
                        exportitem.Text = "XLS";
                        exportitem.Image.IconID = IconID.ExportExporttoxls16x16office2013;
                    });
                });
            });

            //if (_userContext == null)
            //    _userContext = Core.CommonHelper.UserContext();

            if (_userContext.CurrentUser.HasFunction("Site-Sites-Edit"))
            {
                s.Columns.Add(column =>
                {
                    column.Caption = "#";
                    column.SetDataItemTemplateContent(c =>
                    {
                        html.ViewContext.Writer.Write(
                            "<a href=\"#\" onclick=\"editSite(" + DataBinder.Eval(c.DataItem, "Id") + ")\">Bearbeiten</a>&nbsp;" +
                            "<a href=\"#\" onclick=\"confirmDelete(" + DataBinder.Eval(c.DataItem, "Id") + ")\">Löschen</a>"
                        );
                    });
                    column.SetHeaderTemplateContent(c =>
                    {
                        html.ViewContext.Writer.Write(
                            "<a href=\"#\" onclick=\"editSite(-1)\">Neu</a>&nbsp;");
                    });
                    column.Settings.AllowDragDrop = DefaultBoolean.False;
                    column.Settings.AllowSort = DefaultBoolean.False;
                    column.Width = new Unit(150, UnitType.Pixel);
                });
            }
            s.Columns.Add(column =>
            {
                column.Caption = "Kostenstelle";
                column.FieldName = "CustomNumber";
                column.MinWidth = 100;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Bauvorhaben";
                column.FieldName = "Description";
                column.Width = new Unit(13, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Start";
                column.FieldName = "Start";
                column.PropertiesEdit.DisplayFormatString = "dd.MM.yyyy";
                column.MinWidth = 110;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Ende";
                column.FieldName = "End";
                column.PropertiesEdit.DisplayFormatString = "dd.MM.yyyy";
                column.MinWidth = 110;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "VA";
                column.FieldName = "DeviationDescription";
                column.MinWidth = 150;
                column.Width = new Unit(12, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "VA-Summe";
                column.FieldName = "DeviationValue";
                column.PropertiesEdit.DisplayFormatString = "c2";
                column.MinWidth = 120;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Nachträge";
                column.FieldName = "AppendixDescription";
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Mitarbeiter";
                column.FieldName = "UserDescription";
                column.MinWidth = 150;
                column.Width = new Unit(20, UnitType.Percentage);
            });

            s.TotalSummary.Add(DevExpress.Data.SummaryItemType.Sum, "DeviationValue");
            s.GroupSummary.Add(DevExpress.Data.SummaryItemType.Sum, "DeviationValue");

            s.TotalSummary.Add(DevExpress.Data.SummaryItemType.Count, "CustomNumber");
            s.GroupSummary.Add(DevExpress.Data.SummaryItemType.Count, "CustomNumber");

            s.ClientLayout = (sender, e) =>
            {
                if (e.LayoutMode == ClientLayoutMode.Loading)
                {
                    if (System.Web.HttpContext.Current.Session["SiteGridState"] != null)
                        e.LayoutData = (string)System.Web.HttpContext.Current.Session["SiteGridState"];
                }
                else
                    System.Web.HttpContext.Current.Session["SiteGridState"] = e.LayoutData;
            };
            s.ClientSideEvents.BeginCallback = "function (s, e) { e.customArgs['scrollHeight'] = [ gridScrollHeight ]; }";
            s.ClientSideEvents.ToolbarItemClick = "function (s, e) { onToolbarItemClick(s, e); }";

            s.Styles.AlternatingRow.BackColor = System.Drawing.Color.FromArgb(247, 247, 247);

            return s;
        }

        /// <summary>
        /// Creates GridViewSettings for the deviation gridView
        /// </summary>
        /// <param name="html">Current HtmlHelper context.</param>
        public static GridViewSettings DeviationGridViewSettings(this System.Web.Mvc.HtmlHelper html)
        {
            var s = new GridViewSettings();

            s.Name = "devGridViewDeviation";
            s.KeyFieldName = "Id";
            s.CallbackRouteValues = new { Controller = "Deviation", Action = "PartialDeviations" };
            s.Width = Unit.Percentage(100);
            s.Settings.ShowFilterRow = true;
            s.Settings.ShowFilterRowMenu = true;
            s.Settings.ShowFooter = true;
            s.Settings.ShowGroupPanel = true;
            s.Settings.AutoFilterCondition = AutoFilterCondition.Contains;
            s.Settings.VerticalScrollBarMode = ScrollBarMode.Auto;
            s.Settings.VerticalScrollableHeight =
                (html.ViewData["ScrollHeight"] == null || (int)html.ViewData["ScrollHeight"] == -1)
                ? 400
                : (int)html.ViewData["ScrollHeight"];
            s.SettingsExport.Landscape = true;
            s.SettingsExport.FileName = "Vertragsabweichungsliste";
            s.SettingsBehavior.EnableCustomizationWindow = true;
            s.SettingsPopup.CustomizationWindow.Width = new Unit(250, UnitType.Pixel);
            s.SettingsPopup.CustomizationWindow.Height = new Unit(350, UnitType.Pixel);

            s.Toolbars.Add(t =>
            {
                var refreshItem = t.Items.Add(GridViewToolbarCommand.Refresh);
                refreshItem.Text = "Aktualisieren";
                var expandItem = t.Items.Add(GridViewToolbarCommand.FullExpand);
                expandItem.Text = "Alle aufklappen";
                var collapseItem = t.Items.Add(GridViewToolbarCommand.FullCollapse);
                collapseItem.Text = "Alle einklappen";
                var filterItem = t.Items.Add(GridViewToolbarCommand.ClearFilter);
                filterItem.Text = "Filter entfernen";
                t.Items.Add(i =>
                {
                    i.Text = "Spalten anzeigen / ausblenden";
                    i.Name = "ToggleColumnChooser";
                    i.Image.IconID = IconID.OtherViewgridlines16x16gray;
                    i.BeginGroup = true;
                });
                t.Items.Add(i =>
                {
                    i.Text = "Exportieren nach";
                    i.Image.IconID = IconID.ActionsDownload16x16office2013;
                    i.BeginGroup = true;
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Pdf";
                        exportitem.Text = "PDF";
                        exportitem.Image.IconID = IconID.ExportExporttopdf16x16office2013;
                    });
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Xlsx";
                        exportitem.Text = "XLSX";
                        exportitem.Image.IconID = IconID.ExportExporttoxlsx16x16office2013;
                    });
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Xls";
                        exportitem.Text = "XLS";
                        exportitem.Image.IconID = IconID.ExportExporttoxls16x16office2013;
                    });
                });
            });

            s.Columns.Add(column =>
            {
                column.Caption = "Nummer";
                column.FieldName = "CustomNumber";
                column.MinWidth = 80;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Bezeichnung";
                column.FieldName = "Description";
                column.MinWidth = 200;
                column.Width = new Unit(14, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Baustelle";
                column.FieldName = "SiteDescription";
                column.MinWidth = 120;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Nachtrag";
                column.FieldName = "AppendixDescription";
                column.MinWidth = 120;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Einreichung";
                column.FieldName = "ReceiptDate";
                column.PropertiesEdit.DisplayFormatString = "dd.MM.yyyy";
                column.MinWidth = 110;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Tage VA - NT";
                column.FieldName = "DaysReceiptToAppendixOffering";
                column.MinWidth = 110;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Schätzung bew.";
                column.FieldName = "PercentageValue";
                column.PropertiesEdit.DisplayFormatString = "c2";
                column.MinWidth = 100;
                column.Width = new Unit(9, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Status";
                column.FieldName = "StatusDescription";
                column.MinWidth = 160;
                column.Width = new Unit(12, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "VA-Kategorien";
                column.FieldName = "DisturbanceValuesDescription";
                column.MinWidth = 200;
                column.Width = new Unit(14, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Art";
                column.FieldName = "KindDescription";
                column.MinWidth = 140;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Kommentar";
                column.CellStyle.Wrap = DefaultBoolean.True;
                column.SetDataItemTemplateContent(c =>
                {
                    var id = Convert.ToInt32(DataBinder.Eval(c.DataItem, "Id"));

                    var comment = DataBinder.Eval(c.DataItem, "Comment");
                    var text = comment == null
                        ? String.Empty
                        : comment.ToString();

                    if (text.ToString().Length > 40)
                    {
                        html.ViewContext.Writer.Write(text.Substring(0, 40) + " ...");
                        html.ViewContext.Writer.Write("<a href=\"#\" onclick='showComment(\"deviation\"," + id + ",this)'><br />Anzeigen</a>");
                    }
                    else
                        html.ViewContext.Writer.Write(text);
                });
                column.MinWidth = 120;
                column.Width = new Unit(8, UnitType.Percentage);
                column.Visible = false;
            });

            var totalDaysReceiptToAppendixOfferingSum = 0;
            var totalDaysReceiptToAppendixOfferingCount = 0;

            s.CustomSummaryCalculate = (sender, e) =>
            {
                if (e.SummaryProcess == CustomSummaryProcess.Start)
                {
                    totalDaysReceiptToAppendixOfferingSum = 0;
                    totalDaysReceiptToAppendixOfferingCount = 0;
                }

                if (e.SummaryProcess == CustomSummaryProcess.Calculate)
                {
                    var val = e.GetValue("DaysReceiptToAppendixOffering");

                    if (val != null)
                    {
                        totalDaysReceiptToAppendixOfferingCount++;
                        totalDaysReceiptToAppendixOfferingSum += Convert.ToInt32(val);
                    }
                }

                if (e.SummaryProcess == CustomSummaryProcess.Finalize)
                    e.TotalValue = totalDaysReceiptToAppendixOfferingSum / totalDaysReceiptToAppendixOfferingCount;
            };

            s.TotalSummary.Add(DevExpress.Data.SummaryItemType.Sum, "PercentageValue");
            s.GroupSummary.Add(DevExpress.Data.SummaryItemType.Sum, "PercentageValue");

            s.TotalSummary.Add(DevExpress.Data.SummaryItemType.Count, "CustomNumber");
            s.GroupSummary.Add(DevExpress.Data.SummaryItemType.Count, "CustomNumber");

            s.TotalSummary.Add(new ASPxSummaryItem
            {
                FieldName = "DaysReceiptToAppendixOffering",
                SummaryType = DevExpress.Data.SummaryItemType.Custom,
                DisplayFormat = "Schnitt = {0:n0}",
                
            });
            s.GroupSummary.Add(new ASPxSummaryItem
            {
                FieldName = "DaysReceiptToAppendixOffering",
                SummaryType = DevExpress.Data.SummaryItemType.Custom,
                DisplayFormat = "Schnitt = {0:n0}"
            });

            s.ClientLayout = (sender, e) =>
            {
                if (e.LayoutMode == ClientLayoutMode.Loading)
                {
                    if (System.Web.HttpContext.Current.Session["DeviationGridState"] != null)
                        e.LayoutData = (string)System.Web.HttpContext.Current.Session["DeviationGridState"];
                }
                else
                    System.Web.HttpContext.Current.Session["DeviationGridState"] = e.LayoutData;
            };
            s.ClientSideEvents.BeginCallback = "function (s, e) { e.customArgs['scrollHeight'] = [ gridScrollHeight ]; }";
            s.ClientSideEvents.ToolbarItemClick = "function (s, e) { onToolbarItemClick(s, e); }";

            s.Styles.AlternatingRow.BackColor = System.Drawing.Color.FromArgb(247, 247, 247);

            return s;
        }

        /// <summary>
        /// Creates GridViewSettings for the appendix gridView
        /// </summary>
        /// <param name="html">Current HtmlHelper context.</param>
        public static GridViewSettings AppendixGridViewSettings(this System.Web.Mvc.HtmlHelper html)
        {
            var s = new GridViewSettings();

            s.Name = "devGridViewAppendix";
            s.KeyFieldName = "Id";
            s.CallbackRouteValues = new { Controller = "Appendix", Action = "PartialAppendices" };
            s.Width = Unit.Percentage(100);
            s.Settings.ShowFilterRow = true;
            s.Settings.ShowFilterRowMenu = true;
            s.Settings.ShowFooter = true;
            s.Settings.ShowGroupPanel = true;
            s.Settings.AutoFilterCondition = AutoFilterCondition.Contains;
            s.Settings.VerticalScrollBarMode = ScrollBarMode.Auto;
            s.Settings.VerticalScrollableHeight =
                (html.ViewData["ScrollHeight"] == null || (int)html.ViewData["ScrollHeight"] == -1)
                ? 400
                : (int)html.ViewData["ScrollHeight"];
            s.SettingsExport.Landscape = true;
            s.SettingsExport.FileName = "Nachtragsliste";
            s.SettingsBehavior.EnableCustomizationWindow = true;
            s.SettingsPopup.CustomizationWindow.Width = new Unit(250, UnitType.Pixel);
            s.SettingsPopup.CustomizationWindow.Height = new Unit(350, UnitType.Pixel);

            s.Toolbars.Add(t =>
            {
                var refreshItem = t.Items.Add(GridViewToolbarCommand.Refresh);
                refreshItem.Text = "Aktualisieren";
                var expandItem = t.Items.Add(GridViewToolbarCommand.FullExpand);
                expandItem.Text = "Alle aufklappen";
                var collapseItem = t.Items.Add(GridViewToolbarCommand.FullCollapse);
                collapseItem.Text = "Alle einklappen";
                var filterItem = t.Items.Add(GridViewToolbarCommand.ClearFilter);
                filterItem.Text = "Filter entfernen";
                t.Items.Add(i =>
                {
                    i.Text = "Spalten anzeigen / ausblenden";
                    i.Name = "ToggleColumnChooser";
                    i.Image.IconID = IconID.OtherViewgridlines16x16gray;
                    i.BeginGroup = true;
                });
                t.Items.Add(i =>
                {
                    i.Text = "Exportieren nach";
                    i.Image.IconID = IconID.ActionsDownload16x16office2013;
                    i.BeginGroup = true;
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Pdf";
                        exportitem.Text = "PDF";
                        exportitem.Image.IconID = IconID.ExportExporttopdf16x16office2013;
                    });
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Xlsx";
                        exportitem.Text = "XLSX";
                        exportitem.Image.IconID = IconID.ExportExporttoxlsx16x16office2013;
                    });
                    i.Items.Add(exportitem =>
                    {
                        exportitem.Name = "Xls";
                        exportitem.Text = "XLS";
                        exportitem.Image.IconID = IconID.ExportExporttoxls16x16office2013;
                    });
                });
            });

            s.Columns.Add(column =>
            {
                column.Caption = "Nummer";
                column.FieldName = "CustomNumber";
                column.MinWidth = 80;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Bezeichnung";
                column.FieldName = "Description";
                column.MinWidth = 200;
                column.Width = new Unit(14, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Baustelle";
                column.FieldName = "SiteDescription";
                column.MinWidth = 120;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Einreichung";
                column.FieldName = "OfferingDate";
                column.PropertiesEdit.DisplayFormatString = "dd.MM.yyyy";
                column.MinWidth = 110;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Angeb.-Sum.";
                column.FieldName = "OfferingValue";
                column.PropertiesEdit.DisplayFormatString = "c2";
                column.MinWidth = 140;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Verhand.-Sum.";
                column.FieldName = "NegotiationValue";
                column.PropertiesEdit.DisplayFormatString = "c2";
                column.MinWidth = 140;
                column.Width = new Unit(8, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Verh. Angeb./Verha.";
                column.FieldName = "RelationOfferingToNegotiation";
                column.PropertiesEdit.DisplayFormatString = "p2";
                column.MinWidth = 140;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "VA";
                column.FieldName = "DeviationDescription";
                column.MinWidth = 100;
                column.Width = new Unit(6, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Verh. Angeb./VA.";
                column.FieldName = "RelationOfferingToDeviations";
                column.PropertiesEdit.DisplayFormatString = "n2";
                column.MinWidth = 140;
                column.Width = new Unit(10, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Status";
                column.FieldName = "StateDescription";
                column.MinWidth = 100;
                column.Width = new Unit(6, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "NT-Kategorien";
                column.FieldName = "CategoryValuesDescription";
                column.MinWidth = 200;
                column.Width = new Unit(12, UnitType.Percentage);
            });
            s.Columns.Add(column =>
            {
                column.Caption = "Kommentar";
                column.CellStyle.Wrap = DefaultBoolean.True;
                column.SetDataItemTemplateContent(c =>
                {
                    var id = Convert.ToInt32(DataBinder.Eval(c.DataItem, "Id"));

                    var comment = DataBinder.Eval(c.DataItem, "Comment");
                    var text = comment == null
                        ? String.Empty
                        : comment.ToString();

                    if (text.ToString().Length > 40)
                    {
                        html.ViewContext.Writer.Write(text.Substring(0, 40) + " ...");
                        html.ViewContext.Writer.Write("<a href=\"#\" onclick='showComment(\"appendix\"," + id + ",this)'><br />Anzeigen</a>");
                    }
                    else
                        html.ViewContext.Writer.Write(text);
                });
                column.MinWidth = 250;
                column.Width = new Unit(14, UnitType.Percentage);
            });

            s.TotalSummary.Add(DevExpress.Data.SummaryItemType.Count, "CustomNumber");
            s.GroupSummary.Add(DevExpress.Data.SummaryItemType.Count, "CustomNumber");

            s.TotalSummary.Add(new ASPxSummaryItem
            {
                SummaryType = DevExpress.Data.SummaryItemType.Sum,
                FieldName = "OfferingValue",
                DisplayFormat = "{0:c2}"
            });
            s.GroupSummary.Add(new ASPxSummaryItem
            {
                SummaryType = DevExpress.Data.SummaryItemType.Sum,
                FieldName = "OfferingValue",
                DisplayFormat = "{0:c2}"
            });

            s.TotalSummary.Add(new ASPxSummaryItem
            {
                SummaryType = DevExpress.Data.SummaryItemType.Sum,
                FieldName = "NegotiationValue",
                DisplayFormat = "{0:c2}"
            });
            s.GroupSummary.Add(new ASPxSummaryItem
            {
                SummaryType = DevExpress.Data.SummaryItemType.Sum,
                FieldName = "NegotiationValue",
                DisplayFormat = "{0:c2}"
            });

            s.ClientLayout = (sender, e) =>
            {
                if (e.LayoutMode == ClientLayoutMode.Loading)
                {
                    if (System.Web.HttpContext.Current.Session["AppendixGridState"] != null)
                        e.LayoutData = (string)System.Web.HttpContext.Current.Session["AppendixGridState"];
                }
                else
                    System.Web.HttpContext.Current.Session["AppendixGridState"] = e.LayoutData;
            };
            s.ClientSideEvents.BeginCallback = "function (s, e) { e.customArgs['scrollHeight'] = [ gridScrollHeight ]; }";
            s.ClientSideEvents.ToolbarItemClick = "function (s, e) { onToolbarItemClick(s, e); }";

            s.Styles.AlternatingRow.BackColor = System.Drawing.Color.FromArgb(247, 247, 247);

            return s;
        }
    }
}