DashboardViewer.Initialized Event
Handle this event to get the dashboard item data, and apply master filter and dashboard state in asynchronous mode.
Namespace: DevExpress.DashboardWin
Assembly: DevExpress.Dashboard.v19.2.Win.dll
Declaration
Event Data
The Initialized event's data class is EventArgs.
Remarks
This event indicates that you can safely access dashboard items, and allows you to manage filters and the dashboard state.
Examples
This example demonstrates how to work in asynchronous mode to get filter values, set the master filter and perform an asynchronous task when the dashboard is loaded for the first time.
Note
The complete sample project How to Get FIlter Values and Set Master Filter Asynchronously is available in the DevExpress Examples repository.
using DevExpress.DashboardCommon.ViewerData;
using DevExpress.XtraEditors;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace RandomFilterExample
{
public partial class ViewerForm1 : XtraForm {
public ViewerForm1() {
InitializeComponent();
dashboardViewer1.Initialized += OnDashboardViewerInitialized;
}
async void OnMouseClick(object sender, MouseEventArgs e) {
await RandomFilter();
}
async Task RandomFilter() {
string itemName = "choroplethMapDashboardItem1";
IList<AxisPointTuple> filters = await dashboardViewer1.GetAvailableFilterValuesAsync(itemName);
Random r = new Random();
int index = r.Next(0, filters.Count - 1);
await dashboardViewer1.SetMasterFilterAsync(itemName, filters[index]);
}
async void OnDashboardViewerInitialized(object sender, EventArgs e) {
await RandomFilter();
}
}
}
This example demonstrates how to get the data displayed in the dashboard item asynchronously when the dashboard is loaded.
Note
The complete sample project How to Get Dashboard Item Data Asynchronously is available in the DevExpress Examples repository.
using DevExpress.DashboardCommon;
using DevExpress.XtraEditors;
using System;
using System.Threading.Tasks;
namespace DataCounterExample
{
public partial class ViewerForm1 : XtraForm {
public ViewerForm1() {
InitializeComponent();
dashboardViewer1.Initialized += OnDashboardViewerInitialized;
dashboardViewer1.MasterFilterSet += OnDashboardViewerMasterFilterSet;
dashboardViewer1.MasterFilterCleared += OnDashboardViewerMasterFilterCleared;
}
async void OnDashboardViewerInitialized(object sender, EventArgs e) {
simpleLabelItem1.Text = await GetLabelText("choroplethMapDashboardItem1", "Map");
simpleLabelItem2.Text = await GetLabelText("gridDashboardItem1", "Grid");
}
async void OnDashboardViewerMasterFilterSet(object sender, MasterFilterSetEventArgs e) {
simpleLabelItem2.Text = await GetLabelText("gridDashboardItem1", "Grid");
}
async void OnDashboardViewerMasterFilterCleared(object sender, MasterFilterClearedEventArgs e) {
simpleLabelItem2.Text = await GetLabelText("gridDashboardItem1", "Grid");
}
async Task<string> GetLabelText(string itemName, string itemCaption) {
var data = await dashboardViewer1.GetItemDataAsync(itemName);
int count = data.GetAxisPoints(data.GetAxisNames()[0]).Count;
return string.Format("{0}: {1}", itemCaption, count);
}
}
}
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the Initialized event.
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.