DashboardViewer.FilterElementDefaultValues Event

OBSOLETE

The FilterElementDefaultValues event is now obsolete. Use MasterFilterDefaultValues instead.

Use MasterFilterDefaultValues instead.

Namespace: DevExpress.DashboardWin

Assembly: DevExpress.Dashboard.v24.2.Win.dll

Declaration

C#

[Browsable(false)]
[Obsolete("The FilterElementDefaultValues event is now obsolete. Use MasterFilterDefaultValues instead.")]
public event FilterElementDefaultValuesEventHandler FilterElementDefaultValues

VB.NET

<Obsolete("The FilterElementDefaultValues event is now obsolete. Use MasterFilterDefaultValues instead.")>
<Browsable(False)>
Public Event FilterElementDefaultValues As FilterElementDefaultValuesEventHandler

Event Data

The FilterElementDefaultValues event's data class is FilterElementDefaultValuesEventArgs. The following properties provide information specific to this event:

Property	Description
AvailableFilterValues	Gets the available filter values for the current filter element.
FilterElementName	Obsolete. Gets the component name of the filter element.
FilterValues	Gets filter values used to apply default filtering.
ItemComponentName	Gets the component name of the filter element.
ItemName	Gets the name of the filter element.

Example

This example demonstrates how to initialize master filter in a dashboard loaded in the DashboardViewer control. The code for the DashboardDesigner control is the same, because the DashboardDesigner’s events have the same name and functionality.

The following code initializes master filter items:

• The DashboardViewer.MasterFilterDefaultValues event is handled to apply filtering to Grid and Tree View.
• The DashboardViewer.RangeFilterDefaultValue event is used to select the specified date range in the Range Filter.

Master filter initialization can apply one item’s master filter to another master filter item - a mutual filtering occurs. In that scenario, the MasterFilterDefaultValues event has limitations if the Neutral Filter mode is disabled.

C#

using DevExpress.DashboardCommon;
using System;
using System.Linq;

namespace Dashboard_MFDefaultValues
{
    public partial class Form1 : DevExpress.XtraEditors.XtraForm {
        public Form1() {
            InitializeComponent();
            dashboardViewer1.UseNeutralFilterMode = true;
            dashboardViewer1.ConfigureDataConnection += DashboardViewer1_ConfigureDataConnection;
            dashboardViewer1.MasterFilterDefaultValues += DashboardViewer1_MasterFilterDefaultValues;
            dashboardViewer1.RangeFilterDefaultValue += DashboardViewer1_RangeFilterDefaultValue;

            dashboardViewer1.Dashboard = new Dashboard1();
        }

        private void DashboardViewer1_ConfigureDataConnection(object sender, DashboardConfigureDataConnectionEventArgs e)
        {
            ExtractDataSourceConnectionParameters connParameters = e.ConnectionParameters as ExtractDataSourceConnectionParameters;
            connParameters.FileName = "Data\\SalesPerson.dat";
        }

        private void DashboardViewer1_MasterFilterDefaultValues(object sender, MasterFilterDefaultValuesEventArgs e) {
            if (e.ItemComponentName == "gridDashboardItem1") {
                e.FilterValues = e.AvailableFilterValues.Where(v => (string)v["Sales Person"] == "Laura Callahan");
            }
            if (e.ItemComponentName == "treeViewDashboardItem1") {
                e.FilterValues = e.AvailableFilterValues.Where(v => (string)v["Category"] == "Beverages" || 
                    (string)v["Product"] == "Aniseed Syrup");
            }
        }

        private void DashboardViewer1_RangeFilterDefaultValue(object sender, RangeFilterDefaultValueEventArgs e) {
            if (e.DashboardItemName == "rangeFilterDashboardItem1") {
                e.Range = new RangeFilterSelection(new DateTime(2015, 06, 01), new DateTime(2016, 04, 01));
            }
        }
    }
}

VB.NET

Imports DevExpress.DashboardCommon
Imports System
Imports System.Linq

Namespace Dashboard_MFDefaultValues

    Public Partial Class Form1
        Inherits DevExpress.XtraEditors.XtraForm

        Public Sub New()
            InitializeComponent()
            dashboardViewer1.UseNeutralFilterMode = True
            AddHandler dashboardViewer1.ConfigureDataConnection, AddressOf DashboardViewer1_ConfigureDataConnection
            AddHandler dashboardViewer1.MasterFilterDefaultValues, AddressOf DashboardViewer1_MasterFilterDefaultValues
            AddHandler dashboardViewer1.RangeFilterDefaultValue, AddressOf DashboardViewer1_RangeFilterDefaultValue
            dashboardViewer1.Dashboard = New Dashboard1()
        End Sub

        Private Sub DashboardViewer1_ConfigureDataConnection(ByVal sender As Object, ByVal e As DashboardConfigureDataConnectionEventArgs)
            Dim connParameters As ExtractDataSourceConnectionParameters = TryCast(e.ConnectionParameters, ExtractDataSourceConnectionParameters)
            connParameters.FileName = "Data\SalesPerson.dat"
        End Sub

        Private Sub DashboardViewer1_MasterFilterDefaultValues(ByVal sender As Object, ByVal e As MasterFilterDefaultValuesEventArgs)
            If Equals(e.ItemComponentName, "gridDashboardItem1") Then
                e.FilterValues = e.AvailableFilterValues.Where(Function(v) Equals(CStr(v("Sales Person")), "Laura Callahan"))
            End If

            If Equals(e.ItemComponentName, "treeViewDashboardItem1") Then
                e.FilterValues = e.AvailableFilterValues.Where(Function(v) Equals(CStr(v("Category")), "Beverages") OrElse Equals(CStr(v("Product")), "Aniseed Syrup"))
            End If
        End Sub

        Private Sub DashboardViewer1_RangeFilterDefaultValue(ByVal sender As Object, ByVal e As RangeFilterDefaultValueEventArgs)
            If Equals(e.DashboardItemName, "rangeFilterDashboardItem1") Then
                e.Range = New RangeFilterSelection(New DateTime(2015, 06, 01), New DateTime(2016, 04, 01))
            End If
        End Sub
    End Class
End Namespace