DashboardItemState.MasterFilterValues Property
Gets or sets selected master filter values.
Namespace: DevExpress.DashboardCommon
Assembly: DevExpress.Dashboard.v19.1.Core.dll
Declaration
Property Value
| Type | Description |
|---|---|
| List<Object[]> | A list of object arrays that specify selected master filter values. |
Remarks
To clear filters (unselect all values) for a specific item, use the SetInitialDashboardState event for the required platform and assign an empty array of objects to the MasterFilterValues property:
- Web: ASPxDashboard.SetInitialDashboardState
- WPF: DashboardControl.SetInitialDashboardState
- WinForms: DashboardViewer.SetInitialDashboardState / DashboardDesigner.SetInitialDashboardState
protected void ASPxDashboard1_SetInitialDashboardState(object sender, SetInitialDashboardStateEventArgs e) {
var state = new DashboardState();
// ...
var itemState = new DashboardItemState("comboBoxDashboardItem");
itemState.MasterFilterValues = new List<object[]>() { };
state.Items.Add(itemState);
// ...
e.InitialState = state;
}
Note that when the neutral filter mode is disabled and you try to set a dashboard state, for the multiple master filter mode there is a difference between null and empty master filter values:
MasterFilterValues values | Behavior |
|---|---|
MasterFilterValues = null | The control filters data by all values (all values are selected). |
MasterFilterValues = [] | The control excludes all filter (no data is selected). |
Example
The sample illustrates how to specify a dashboard state (such as master filter or parameter values) in code and how to apply this state when loading a dashboard for the first time. In this example, the DashboardState object holds the required dashboard state. The ASPxDashboard.SetInitialDashboardState event is used to apply the specified dashboard state when loading a dashboard.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/aspxdashboard-how-to-specify-a-default-dashboard-state-in-code-t513681.
using DevExpress.DashboardCommon;
using DevExpress.DashboardWeb;
using System;
using System.Collections.Generic;
namespace WebDashboard_ManualDashboardState
{
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e) {
}
protected void ASPxDashboard1_SetInitialDashboardState(object sender, SetInitialDashboardStateEventArgs e) {
e.InitialState = InitializeDashboardState();
}
public DashboardState InitializeDashboardState() {
DashboardState dashboardState = new DashboardState();
DashboardParameterState parameterState =
new DashboardParameterState("countryParameter", "USA", typeof(string));
DashboardItemState gridFilterState = new DashboardItemState("gridDashboardItem1");
gridFilterState.MasterFilterValues.AddRange(new List<object[]>() {
new string[1] { "Andrew Fuller" },
new string[1] { "Laura Callahan" }
}
);
DashboardItemState treemapDrilldownState = new DashboardItemState("treemapDashboardItem1");
treemapDrilldownState.DrillDownValues.Add("Beverages");
DashboardItemState rangeFilterState = new DashboardItemState("rangeFilterDashboardItem1");
rangeFilterState.RangeFilterState.Selection =
new RangeFilterSelection(new DateTime(2015, 1, 1), new DateTime(2016, 1, 1));
dashboardState.Parameters.Add(parameterState);
dashboardState.Items.AddRange(new List<DashboardItemState>() {
gridFilterState,
treemapDrilldownState,
rangeFilterState }
);
return dashboardState;
}
}
}