BusyIndicator with RadCartesianChart

[Alberto]

Hello,

I am trying to implement a BusyIndicator when loading data into a RadCartesianChart.

I have this code:

<telerik:RadBusyIndicator Name="busyInd" HorizontalAlignment="Left"  Grid.Row="1" Margin="10,10,0,0" VerticalAlignment="Top" Height="255" Width="372" IsIndeterminate="True">

        <telerik:RadCartesianChart x:Name="CartesianChartDemo" Grid.Column="5" Margin="10" Grid.Row="2" Grid.ColumnSpan="3">

            <telerik:RadCartesianChart.Behaviors>
                <telerik:ChartPanAndZoomBehavior PanMode="Both" ZoomMode="Both"/>
            </telerik:RadCartesianChart.Behaviors>

        </telerik:RadCartesianChart>

</telerik:RadBusyIndicator>

I load data in the code behind file:

CartesianChartDemo.VerticalAxis = new CategoricalAxis();
            CartesianChartDemo.HorizontalAxis = new LinearAxis();

            CartesianChartDemo.Grid = new CartesianChartGrid() { MajorLinesVisibility = GridLineVisibility.XY };

            string strQuery = "MyQuery";

//Function to get datatable
            DataTable dtAlloys = DataRetriever.GetDataTable(strQuery);

            BarSeries barSer = new BarSeries();
            barSer.ShowLabels = true;
            barSer.CombineMode = ChartSeriesCombineMode.Cluster;

            BarSeries barSer2 = new BarSeries();
            barSer2.ShowLabels = true;
            barSer2.CombineMode = ChartSeriesCombineMode.Cluster;

            foreach (DataRow drAlloy in dtAlloys.Rows)
            {
                barSer.DataPoints.Add(new CategoricalDataPoint() { Category = drAlloy["MATERIAL_CODE"], Label = string.Format("{0:N}", drAlloy["WT"]), Value = double.Parse(drAlloy["WT"].ToString()) });
                barSer2.DataPoints.Add(new CategoricalDataPoint() { Category = drAlloy["MATERIAL_CODE"], Label = string.Format("{0:N}", drAlloy["TARG"]), Value = double.Parse(drAlloy["TARG"].ToString()) });
            }

            CartesianChartDemo.Series.Clear();
            CartesianChartDemo.Series.Add(barSer);
            CartesianChartDemo.Series.Add(barSer2);

I was thinking to add:

busyInd.IsBusy = true;

//Code to load data


busyInd.IsBusy = false;

But I'm not sure if this is the way the BusyIndicator works.

Does anyone has any pointers to accomplish that?

Regards,

Alberto

[Alberto]

I think I have a possible solution:

I took some code from the WPF Control Examples Demo:

//Show the busy indicator
busyInd.IsBusy = true;

var backgroundWorker = new BackgroundWorker();
backgroundWorker.DoWork += this.OnBackgroundWorkerDoWork;
backgroundWorker.RunWorkerCompleted += OnBackgroundWorkerRunWorkerCompleted;
backgroundWorker.RunWorkerAsync();

private void OnBackgroundWorkerDoWork(object sender, DoWorkEventArgs e)
        {
            //Get data table
            e.Result = GetData();
        }

private void OnBackgroundWorkerRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            var backgroundWorker = sender as BackgroundWorker;
            backgroundWorker.DoWork -= this.OnBackgroundWorkerDoWork;
            backgroundWorker.RunWorkerCompleted -= OnBackgroundWorkerRunWorkerCompleted;

            // Hide busy indicator
            busyInd.IsBusy = false;

            ConfigureChart((DataTable)e.Result);
        }

void ConfigureChart(DataTable dtAlloys)
        {
            try
            {
                CartesianChartDemo.VerticalAxis = new CategoricalAxis();
                CartesianChartDemo.HorizontalAxis = new LinearAxis();

                BarSeries barSer = new BarSeries();
                barSer.ShowLabels = true;
                barSer.CombineMode = ChartSeriesCombineMode.Cluster;

                BarSeries barSer2 = new BarSeries();
                barSer2.ShowLabels = true;
                barSer2.CombineMode = ChartSeriesCombineMode.Cluster;

                foreach (DataRow drAlloy in dtAlloys.Rows)
                {
                    barSer.DataPoints.Add(new CategoricalDataPoint() { Category = drAlloy["MATERIAL_CODE"], Label = string.Format("{0:N}", drAlloy["WT"]), Value = double.Parse(drAlloy["WT"].ToString()) });
                    barSer2.DataPoints.Add(new CategoricalDataPoint() { Category = drAlloy["MATERIAL_CODE"], Label = string.Format("{0:N}", drAlloy["TARG"]), Value = double.Parse(drAlloy["TARG"].ToString()) });
                }

                CartesianChartDemo.Series.Clear();
                CartesianChartDemo.Series.Add(barSer);
                CartesianChartDemo.Series.Add(barSer2);

            }
            catch (Exception ex)
            {
                MessageBox.Show("Error", ex.Message);
            }

And that's it, it works as I needed.

Regards,

Alberto

[Yana]

Hi Alberto,

Indeed, that is the right way to use RadBusyIndicator.

If you have any further questions, write to us again.

Regards,
Yana
Telerik