Dashboard.LayoutRoot Property
Gets or sets the root dashboard layout group.
Namespace: DevExpress.DashboardCommon
Assembly: DevExpress.Dashboard.v24.2.Core.dll
Declaration
[Browsable(false)]
[DefaultValue(null)]
public DashboardLayoutGroup LayoutRoot { get; set; }Property Value
| Type | Default | Description |
|---|---|---|
| DashboardLayoutGroup | null | A DashboardLayoutGroup object that specifies the root dashboard layout group. |
Remarks
A LayoutRoot layout group contains child layout items and groups used to arrange dashboard items. You can use the DashboardLayoutGroup.ChildNodes property to access the collection of child items and groups.
Example
This example constructs the layout of a sample dashboard that contains the following items:
- DateFilterDashboardItem
- ChartDashboardItem
- DashboardItemGroup that contains the DateFilter and Chart items
- GridDashboardItem
- RangeFilterDashboardItem
The Dashboard.LoadFromXml method loads a sample dashboard.
The following steps are taken to create a new layout:
- Create DashboardLayoutItem objects to display the existing dashboard items and DashboardLayoutGroup object to display a dashboard group. The weight parameter specifies the layout item’s relative size in a group.
- Create DashboardLayoutGroup objects to organize items which do not belong to a dashboard group item. Add layout items as child nodes to form a layout tree.
- Create a root group - a new DashboardLayoutGroup object whose DashboardLayoutGroup.DashboardItem property is null. Add the layout tree nodes to the root as its child nodes.
- Assign the root group to the
Dashboard.LayoutRootproperty.
using System;
using System.Linq;
using DevExpress.XtraEditors;
using DevExpress.DashboardCommon;
using DevExpress.DashboardWin;
using System.IO;
namespace Dashboard_LayoutCustomization
{
public partial class Form1 : XtraForm
{
public Form1()
{
InitializeComponent();
dashboardViewer1.CustomizeDashboardTitle += DashboardViewer1_CustomizeDashboardTitle;
dashboardViewer1.LoadDashboard(@"Data\LayoutUnordered.xml");
}
private void ChangeLayout(DashboardToolbarItemClickEventArgs args)
{
Dashboard dashboard = new Dashboard();
dashboard.LoadFromXml(@"Data\LayoutUnordered.xml");
dashboard.BeginUpdate();
// Switch off the DateFilter item's AutoHeight arrangement mode so that the DateFilter layout does not ignore its layout weight.
((DateFilterDashboardItem)(dashboard.Items["dateFilterDashboardItem1"])).ArrangementMode = DateFilterArrangementMode.Horizontal;
// Hide captions.
dashboard.Items.ForEach(item => item.ShowCaption = false);
dashboard.Groups.ForEach(item => item.ShowCaption = false);
// Create layout items for the DateFilter and Chart dashboard items.
DashboardLayoutItem dateFilterLayoutItem = new DashboardLayoutItem(dashboard.Items["dateFilterDashboardItem1"], 13);
DashboardLayoutItem chartLayoutItem = new DashboardLayoutItem(dashboard.Items["chartDashboardItem1"], 87);
// Create a layout item for the dashboard Group item.
DashboardLayoutGroup groupLayoutItem = new DashboardLayoutGroup()
{
Orientation = DashboardLayoutGroupOrientation.Vertical,
DashboardItem = dashboard.Groups["dashboardItemGroup1"],
Weight = 70
};
// Connect layout items in the layout tree.
groupLayoutItem.ChildNodes.AddRange(dateFilterLayoutItem, chartLayoutItem);
// Create a Grid layout item.
DashboardLayoutItem gridLayoutItem = new DashboardLayoutItem(dashboard.Items["gridDashboardItem1"], 30);
// Create a group layout item to organize the Grid layout item and a Dashboard Group layout item.
DashboardLayoutGroup layoutGroup = new DashboardLayoutGroup(DashboardLayoutGroupOrientation.Horizontal, 85);
// Connect layout items in the layout tree.
layoutGroup.ChildNodes.AddRange(gridLayoutItem, groupLayoutItem);
// Create a RangeFilter layout item.
DashboardLayoutItem rangeFilterLayoutItem = new DashboardLayoutItem(dashboard.Items["rangeFilterDashboardItem1"], 15);
// Create a root layout group. Its DashboardItem property is null.
DashboardLayoutGroup rootGroup = new DashboardLayoutGroup()
{
Orientation = DashboardLayoutGroupOrientation.Vertical,
Weight = 100,
DashboardItem = null
};
// Connect layout items in the layout tree.
rootGroup.ChildNodes.AddRange(layoutGroup, rangeFilterLayoutItem);
// The layout treee is built. Set the dashboard's root layout node to finalize the layout.
dashboard.LayoutRoot = rootGroup;
dashboard.EndUpdate();
dashboardViewer1.Dashboard = dashboard;
}
private void RepositionItems(DashboardToolbarItemClickEventArgs args)
{
Dashboard dashboard = dashboardViewer1.Dashboard;
DashboardLayoutGroup rootGroup = dashboard.LayoutRoot.ChildNodes[0] as DashboardLayoutGroup;
if ((rootGroup != null) && (rootGroup.ChildNodes.Count > 1))
rootGroup.ChildNodes[0].MoveRight(rootGroup.ChildNodes[1]);
}
private void SaveLayoutToFile(DashboardToolbarItemClickEventArgs args)
{
dashboardViewer1.SaveDashboardLayout("DashboardLayout.xml");
}
private void LoadLayoutFromFile(DashboardToolbarItemClickEventArgs obj)
{
if (File.Exists("DashboardLayout.xml"))
dashboardViewer1.LoadDashboardLayout("DashboardLayout.xml");
}
private void DashboardViewer1_CustomizeDashboardTitle(object sender, CustomizeDashboardTitleEventArgs e)
{
var exportItem = e.Items.FirstOrDefault(i => i.ButtonType == DashboardButtonType.Export);
if (exportItem != null)
e.Items.Remove(exportItem);
DashboardToolbarItem btnChangeLayout = new DashboardToolbarItem();
btnChangeLayout.Caption = "Change Layout";
btnChangeLayout.ClickAction = new Action<DashboardToolbarItemClickEventArgs>(ChangeLayout);
e.Items.Add(btnChangeLayout);
DashboardToolbarItem btnRepositionItems = new DashboardToolbarItem();
btnRepositionItems.Caption = "Reposition Items";
btnRepositionItems.ClickAction = new Action<DashboardToolbarItemClickEventArgs>(RepositionItems);
e.Items.Add(btnRepositionItems);
DashboardToolbarItem btnSaveLayout = new DashboardToolbarItem();
btnSaveLayout.Caption = "Save Layout to File";
btnSaveLayout.ClickAction = new Action<DashboardToolbarItemClickEventArgs>(SaveLayoutToFile);
e.Items.Add(btnSaveLayout);
DashboardToolbarItem btnLoadLayout = new DashboardToolbarItem();
btnLoadLayout.Caption = "Load Layout from File";
btnLoadLayout.ClickAction = new Action<DashboardToolbarItemClickEventArgs>(LoadLayoutFromFile);
e.Items.Add(btnLoadLayout);
}
}
}
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the LayoutRoot property.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
See Also