Exporting BarChart

[Ghasem]

Hi All, 
I am using WPF RadChart , to create and export charts in code behind, everything is ok in all chart type same as bubble , pie , linear, … but in Bar chart using BarSeriesDefinition, the exported Image has no bar! Labels are shown correctly above hidden bars! Also created chart is shown correctly in WPF RadChart.
in this below code I show the problem
Regards

private void Button_Click(object sender, RoutedEventArgs e)
        {
            ChartBaseParameter ChartParam = new ChartBaseParameter()
            {
                XAxisField = "x",
                YAxisFields = new List<string>() { "y" }
            };

            DataTable dt = new DataTable();
            dt.Columns.Add("x", typeof(int));
            dt.Columns.Add("y", typeof(int));
            dt.Rows.Add(1, 1);
            dt.Rows.Add(2, 2);

            this.ChartPanel.SeriesMappings.Clear();
            this.ChartPanel.SortDescriptors.Clear();
            this.ChartPanel.ItemsSource = null;

            var chart = InitChart(this.ChartPanel, ChartParam, true, dt);
            var fileName = "C:\\myChart.jpg";
            chart.ExportToImage(fileName, new PngBitmapEncoder());
        }


        public static RadChart InitChart(RadChart chartPanel, ChartBaseParameter chartParam, bool showError, System.Data.DataTable chartTable)
        {
            bool showItemLabels = true;

            AnimationManager.IsGlobalAnimationEnabled = false;
            chartPanel.DefaultView.ChartArea.EnableAnimations = false;

            chartPanel.BeginInit();
            chartPanel.Width = 300;
            chartPanel.Height = 300;

            BarLabelSettings barLabelSetting = new BarLabelSettings();
            barLabelSetting.Distance = 10;
            barLabelSetting.LabelDisplayMode = LabelDisplayMode.Outside;
            barLabelSetting.ShowConnectors = true;

            foreach (var YItem in chartParam.YAxisFields)
            {

                SeriesMapping seriesmappingi = new SeriesMapping() { LegendLabel = YItem };
                seriesmappingi.SeriesDefinition = new BarSeriesDefinition() { ShowItemLabels = showItemLabels, LabelSettings = barLabelSetting };
                seriesmappingi.ItemMappings.Add(new ItemMapping("y", DataPointMember.YValue) { FieldType = typeof(int) });
                seriesmappingi.ItemMappings.Add(new ItemMapping("x", DataPointMember.XCategory) { FieldType = typeof(int) });
                seriesmappingi.ItemMappings.Add(new ItemMapping("x", DataPointMember.LegendLabel) { FieldType = typeof(int) });
                chartPanel.SeriesMappings.Add(seriesmappingi);
            }

            chartPanel.DefaultView.ChartArea.AxisX.LabelRotationAngle = -90;
            chartPanel.DefaultView.ChartArea.ZoomScrollSettingsX.MinZoomRange = 0.01;
            chartPanel.DefaultView.ChartArea.AxisX.Title = chartParam.XAxisField;

            chartPanel.DefaultView.ChartArea.ZoomScrollSettingsX.ScrollMode = ScrollMode.ScrollAndZoom;
            chartPanel.DefaultView.ChartArea.AxisY.ExtendDirection = AxisExtendDirection.Both;
            chartPanel.DefaultView.ChartArea.LabelFormatBehavior = LabelFormatBehavior.None;

            chartPanel.DefaultSeriesDefinition.LegendDisplayMode = LegendDisplayMode.DataPointLabel;

            chartPanel.EndInit();

            chartPanel.Measure(new Size(1024, 768));
            chartPanel.Arrange(new System.Windows.Rect(new Point(0, 0), chartPanel.DesiredSize));

            chartPanel.ItemsSource = chartTable;
            chartPanel.Rebind();
            chartPanel.UpdateLayout();
            return chartPanel;
        }

    }
    public class ChartBaseParameter
    {
        public string XAxisField;
        public List<string> YAxisFields;
    }

[Peshito]

Hello,

What you can try is first disabling all animations:

Copy Code

chart.DefaultView.ChartArea.EnableAnimations = false;

Also, when using bar series you will need to set an ItemStyle to the bar SeriesDefinition which excludes animations specific to the Bars.

Hope this helps.

Regards,
Peshito
Telerik

 

 

[Ghasem]

thank you for your reply , but i don't know which property I should use to exclude animation, I try below but it doesn't work

seriesmappingi.SeriesDefinition = new BarSeriesDefinition()
                                {
                                    ShowItemLabels = showItemLabels,
                                    AnimationSettings = new AnimationSettings()
                                    {
                                        DefaultSeriesDelay = TimeSpan.Zero,
                                        TotalSeriesAnimationDuration = TimeSpan.Zero,
                                        ItemAnimationDuration = TimeSpan.Zero,
                                        ItemDelay = TimeSpan.Zero
                                    }
                                };

[Petar Marchev]

Hi Ghasem,

The trick to exporting a bar chart is setting a style in which the animations have been removed, just as mentioned earlier. I have attached a simple project which successfully exports a bar chart. You will find the bar ItemStyle in the code. I hope this helps.

Regards,
Petar Marchev
Telerik