dashboard-devexpress-dot-dashboardcommon-b39fe4db.md
A layout group used to arrange layout items or other groups within a dashboard.
Namespace : DevExpress.DashboardCommon
Assembly : DevExpress.Dashboard.v25.2.Core.dll
NuGet Package : DevExpress.Dashboard.Core
public class DashboardLayoutGroup :
DashboardLayoutNode
Public Class DashboardLayoutGroup
Inherits DashboardLayoutNode
The following members return DashboardLayoutGroup objects:
The DashboardLayoutGroup class exposes the DashboardLayoutGroup.ChildNodes property that provides access to the collection of child layout groups and items that constitute the current layout group. Use the DashboardLayoutGroup.Orientation property to specify the orientation of layout items/groups within the group.
The DashboardLayoutGroup.Weight property allows specifying the relative size of the layout group.
This example constructs the layout of a sample dashboard that contains the following items:
The Dashboard.LoadFromXml method loads a sample dashboard.
The following steps are taken to create a new layout:
DashboardLayoutGroup object to display a dashboard group. The weight parameter specifies the layout item’s relative size in a group.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.DashboardLayoutGroup object whose DashboardLayoutGroup.DashboardItem property is null. Add the layout tree nodes to the root as its child nodes.View Example: How to modify dashboard layout in code
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);
}
}
}
Imports System
Imports System.Linq
Imports DevExpress.XtraEditors
Imports DevExpress.DashboardCommon
Imports DevExpress.DashboardWin
Imports System.IO
Namespace Dashboard_LayoutCustomization
Partial Public Class Form1
Inherits XtraForm
Public Sub New()
InitializeComponent()
AddHandler dashboardViewer1.CustomizeDashboardTitle, AddressOf DashboardViewer1_CustomizeDashboardTitle
dashboardViewer1.LoadDashboard("Data\LayoutUnordered.xml")
End Sub
Private Sub ChangeLayout(ByVal args As DashboardToolbarItemClickEventArgs)
Dim dashboard As 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.
CType(dashboard.Items("dateFilterDashboardItem1"), DateFilterDashboardItem).ArrangementMode = DateFilterArrangementMode.Horizontal
' Hide captions.
dashboard.Items.ForEach(Sub(item) item.ShowCaption = False)
dashboard.Groups.ForEach(Sub(item) item.ShowCaption = False)
' Create layout items for the DateFilter and Chart dashboard items.
Dim dateFilterLayoutItem As New DashboardLayoutItem(dashboard.Items("dateFilterDashboardItem1"), 13)
Dim chartLayoutItem As New DashboardLayoutItem(dashboard.Items("chartDashboardItem1"), 87)
' Create a layout item for the dashboard Group item.
Dim groupLayoutItem As New DashboardLayoutGroup() With {.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.
Dim gridLayoutItem As New DashboardLayoutItem(dashboard.Items("gridDashboardItem1"), 30)
' Create a group layout item to organize the Grid layout item and a Dashboard Group layout item.
Dim layoutGroup As New DashboardLayoutGroup(DashboardLayoutGroupOrientation.Horizontal, 85)
' Connect layout items in the layout tree.
layoutGroup.ChildNodes.AddRange(gridLayoutItem, groupLayoutItem)
' Create a RangeFilter layout item.
Dim rangeFilterLayoutItem As New DashboardLayoutItem(dashboard.Items("rangeFilterDashboardItem1"), 15)
' Create a root layout group. Its DashboardItem property is null.
Dim rootGroup As New DashboardLayoutGroup() With {.Orientation = DashboardLayoutGroupOrientation.Vertical, .Weight = 100, .DashboardItem = Nothing}
' 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
End Sub
Private Sub RepositionItems(ByVal args As DashboardToolbarItemClickEventArgs)
Dim dashboard As Dashboard = dashboardViewer1.Dashboard
Dim rootGroup As DashboardLayoutGroup = TryCast(dashboard.LayoutRoot.ChildNodes(0), DashboardLayoutGroup)
If (rootGroup IsNot Nothing) AndAlso (rootGroup.ChildNodes.Count > 1) Then
rootGroup.ChildNodes(0).MoveRight(rootGroup.ChildNodes(1))
End If
End Sub
Private Sub SaveLayoutToFile(ByVal args As DashboardToolbarItemClickEventArgs)
dashboardViewer1.SaveDashboardLayout("DashboardLayout.xml")
End Sub
Private Sub LoadLayoutFromFile(ByVal obj As DashboardToolbarItemClickEventArgs)
If File.Exists("DashboardLayout.xml") Then
dashboardViewer1.LoadDashboardLayout("DashboardLayout.xml")
End If
End Sub
Private Sub DashboardViewer1_CustomizeDashboardTitle(ByVal sender As Object, ByVal e As CustomizeDashboardTitleEventArgs)
Dim exportItem = e.Items.FirstOrDefault(Function(i) i.ButtonType = DashboardButtonType.Export)
If exportItem IsNot Nothing Then
e.Items.Remove(exportItem)
End If
Dim btnChangeLayout As New DashboardToolbarItem()
btnChangeLayout.Caption = "Change Layout"
btnChangeLayout.ClickAction = New Action(Of DashboardToolbarItemClickEventArgs)(AddressOf ChangeLayout)
e.Items.Add(btnChangeLayout)
Dim btnRepositionItems As New DashboardToolbarItem()
btnRepositionItems.Caption = "Reposition Items"
btnRepositionItems.ClickAction = New Action(Of DashboardToolbarItemClickEventArgs)(AddressOf RepositionItems)
e.Items.Add(btnRepositionItems)
Dim btnSaveLayout As New DashboardToolbarItem()
btnSaveLayout.Caption = "Save Layout to File"
btnSaveLayout.ClickAction = New Action(Of DashboardToolbarItemClickEventArgs)(AddressOf SaveLayoutToFile)
e.Items.Add(btnSaveLayout)
Dim btnLoadLayout As New DashboardToolbarItem()
btnLoadLayout.Caption = "Load Layout from File"
btnLoadLayout.ClickAction = New Action(Of DashboardToolbarItemClickEventArgs)(AddressOf LoadLayoutFromFile)
e.Items.Add(btnLoadLayout)
End Sub
End Class
End Namespace
Object DashboardLayoutNode DashboardLayoutGroup DashboardLayoutTabContainer
See Also