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Enterprise and Analytic Tools
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Frameworks and Libraries
ComboBoxDashboardItem Class
A Combo Box dashboard item that allows end-users to filter other dashboard items.
Namespace: DevExpress.DashboardCommon
Assembly: DevExpress.Dashboard.v19.1.Core.dll
Declaration
public class ComboBoxDashboardItem :
FilterElementDashboardItemPublic Class ComboBoxDashboardItem
Inherits FilterElementDashboardItemRemarks
The Combo Box dashboard item provides the capability to filter other dashboard items and allows end-users to select a value(s) from the drop-down list .
The following documentation is available.
Examples
The following example demonstrates how to combine filter elements to a group and bind them to data in code.
In this example, the dashboard contains the ComboBoxDashboardItem, ListBoxDashboardItem and TreeViewDashboardItem combined into a group. These filter elements allow you to apply filtering to a Chart dashboard item by selecting the required values.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-combine-filter-elements-to-a-group-and-bind-them-to-data-t191632.
Imports System
Imports DevExpress.DashboardCommon
Imports DevExpress.DataAccess.ConnectionParameters
Imports DevExpress.DataAccess.Sql
Imports DevExpress.XtraEditors
Namespace Dashboard_FilterElements_and_Groups
Partial Public Class Form1
Inherits XtraForm
Public Sub New()
InitializeComponent()
Dim dashboard1 As New Dashboard()
Dim dataSource As New DashboardSqlDataSource()
dataSource.ConnectionParameters =
New XmlFileConnectionParameters("..\..\Data\WebsiteStatisticsData.xml")
Dim selectQuery As SelectQuery = SelectQueryFluentBuilder.AddTable("Data") _
.SelectColumns("Browser", "BrowserDetails", "Date", "Count") _
.Build("Statistics")
dataSource.Queries.Add(selectQuery)
dashboard1.DataSources.Add(dataSource)
Dim comboBox1 As New ComboBoxDashboardItem()
comboBox1.Name = "Browser"
comboBox1.DataSource = dataSource
comboBox1.DataMember = "Statistics"
comboBox1.FilterDimensions.Add(New Dimension("Browser"))
comboBox1.ComboBoxType = ComboBoxDashboardItemType.Checked
Dim listBox1 As New ListBoxDashboardItem()
listBox1.Name = "Browser Version"
listBox1.DataSource = dataSource
listBox1.DataMember = "Statistics"
listBox1.FilterDimensions.Add(New Dimension("BrowserDetails"))
listBox1.InteractivityOptions.IgnoreMasterFilters = False
Dim treeView1 As New TreeViewDashboardItem()
treeView1.Name = "Date"
treeView1.DataSource = dataSource
treeView1.DataMember = "Statistics"
treeView1.FilterDimensions.AddRange(New Dimension("Date", DateTimeGroupInterval.Year), _
New Dimension("Date", DateTimeGroupInterval.Quarter))
treeView1.AutoExpandNodes = True
Dim group1 As New DashboardItemGroup()
group1.Name = "Filters"
group1.InteractivityOptions.IsMasterFilter = True
dashboard1.Groups.Add(group1)
group1.AddRange(comboBox1, treeView1, listBox1)
Dim chart1 As New ChartDashboardItem()
chart1.Name = "Browser Statistics"
chart1.DataSource = dataSource
chart1.DataMember = "Statistics"
chart1.Arguments.Add(New Dimension("Date", DateTimeGroupInterval.MonthYear))
chart1.SeriesDimensions.AddRange(New Dimension("Browser"), New Dimension("BrowserDetails"))
chart1.Panes.Add(New ChartPane())
Dim salesAmountSeries As New SimpleSeries(SimpleSeriesType.SplineArea)
salesAmountSeries.Value = New Measure("Count")
chart1.Panes(0).Series.Add(salesAmountSeries)
dashboard1.Items.Add(chart1)
dashboardViewer1.Dashboard = dashboard1
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
Dim layoutGroup1 As DashboardLayoutGroup =
dashboardViewer1.Dashboard.LayoutRoot.FindRecursive(dashboardViewer1.Dashboard.Groups(0))
layoutGroup1.Orientation = DashboardLayoutGroupOrientation.Vertical
layoutGroup1.Weight = dashboardViewer1.Dashboard.LayoutRoot.Weight / 5
dashboardViewer1.SetMasterFilter("comboBoxDashboardItem1", "Internet Explorer")
End Sub
End Class
End Namespace