[Solved] LineSeriesDefinition AG_E_UNKNOWN_ERROR

[James]

Hi,

When I set ShowItemLabels or ShowPointMarks to true I get AG_E_UNKNOWN_ERROR. If I set both to false the exception is not thrown and the line graph shows as expected.

Here is my code :

        <telerikChart:RadChart x:Name="radChart">
            <telerikChart:RadChart.SeriesMappings>
                <telerikCharting:SeriesMapping>
                    <telerikCharting:SeriesMapping.SeriesDefinition>
                        <telerikCharting:LineSeriesDefinition ShowItemLabels="True" />
                    </telerikCharting:SeriesMapping.SeriesDefinition>
                    <telerikCharting:SeriesMapping.ItemMappings>
                        <telerikCharting:ItemMapping FieldName="LastUpdate" DataPointMember="XValue" />
                        <telerikCharting:ItemMapping FieldName="Price" DataPointMember="YValue" />
                    </telerikCharting:SeriesMapping.ItemMappings>
                </telerikCharting:SeriesMapping>
            </telerikChart:RadChart.SeriesMappings>
        </telerikChart:RadChart>

Code behind :

        private List<Market> items;

        public MyChart() {
            InitializeComponent();

            items = new List<Market>();

            var p1 = new Market();
            p1.Price = 1256.75;
            p1.LastUpdate = DateTime.Now;
            items.Add(p1);

            var p2 = new Market();
            p2.Price = 1236.75;
            p2.LastUpdate = DateTime.Now.AddDays(1);
            items.Add(p2);

            var p4 = new Market();
            p4.Price = 1236.75;
            p4.LastUpdate = DateTime.Now.AddDays(2);
            items.Add(p4);

            radChart.DefaultView.ChartArea.AxisX.MinValue = items.FirstOrDefault().LastUpdate.ToOADate();
            radChart.DefaultView.ChartArea.AxisX.MaxValue = items.LastOrDefault().LastUpdate.ToOADate();
            radChart.ItemsSource = items;
        }

        public class Market {
            public double Price { get; set; }
            public DateTime LastUpdate { get; set; }
        }

I am on version 2010.1.0412 SL4 RTW.

Can you replicate?

Regards,

James

[Giuseppe]

Hi James,

Indeed we must admit that this problem was introduced in the latest unofficial internal build released on Monday. Our developers were able to address the issue immediately and the fix will be included in the weekly internal build that should become public later today.


All the best,
Freddie
the Telerik team

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[James]

Thanks that solved the problem, but now this latest build has broken my X axis when AutoRange=True.

See attached screen shot and code below. The previous internal build did not have this issue.

        <Controls:RadChart x:Name="radChart">
            <Controls:RadChart.SeriesMappings>
                <telerikCharting:SeriesMapping>
                    <telerikCharting:SeriesMapping.SeriesDefinition>
                        <telerikCharting:LineSeriesDefinition ShowItemLabels="True" ShowPointMarks="False" />
                    </telerikCharting:SeriesMapping.SeriesDefinition>
                    <telerikCharting:SeriesMapping.ItemMappings>
                        <telerikCharting:ItemMapping FieldName="LastUpdate" DataPointMember="XValue" />
                        <telerikCharting:ItemMapping FieldName="Price" DataPointMember="YValue" />
                    </telerikCharting:SeriesMapping.ItemMappings>
                </telerikCharting:SeriesMapping>
            </Controls:RadChart.SeriesMappings>
            <Controls:RadChart.DefaultView>
                <telerikCharting:ChartDefaultView>
                    <telerikCharting:ChartDefaultView.ChartArea>
                        <telerikCharting:ChartArea>
                            <telerikCharting:ChartArea.AxisX>
                                <telerikCharting:AxisX AutoRange="True" LayoutMode="Normal" IsDateTime="True" DefaultLabelFormat="hh:mm:ss">
                                </telerikCharting:AxisX>
                            </telerikCharting:ChartArea.AxisX>
                        </telerikCharting:ChartArea>
                    </telerikCharting:ChartDefaultView.ChartArea>
                </telerikCharting:ChartDefaultView>
            </Controls:RadChart.DefaultView>
        </Controls:RadChart>

Code behind :

        private List<Market> items;

        public MyChart() {
            InitializeComponent();

            items = new List<Market>();

            var p1 = new Market();
            p1.Price = 1256.75;
            p1.LastUpdate = DateTime.Now;
            items.Add(p1);

            var p2 = new Market();
            p2.Price = 1236.75;
            p2.LastUpdate = DateTime.Now.AddSeconds(20);
            items.Add(p2);

            var p4 = new Market();
            p4.Price = 1296.75;
            p4.LastUpdate = DateTime.Now.AddSeconds(40);
            items.Add(p4);

            radChart.DefaultView.ChartArea.AxisX.MinValue = items.FirstOrDefault().LastUpdate.ToOADate();
            radChart.DefaultView.ChartArea.AxisX.MaxValue = items.LastOrDefault().LastUpdate.ToOADate();
            radChart.ItemsSource = items;
        }

        public class Market {
            public double Price { get; set; }
            public DateTime LastUpdate { get; set; }
        }

Regards,

James

[Ves]

Hi James,

You need to set AxisX.AutoRange property to false in order to be able to set its MinValue, MaxValue and Step. In addition, we recommend using the AddRange method, here is an example:

double min = items.FirstOrDefault().LastUpdate.ToOADate();
double max = items.LastOrDefault().LastUpdate.ToOADate();
radChart.DefaultView.ChartArea.AxisX.AutoRange = false;
radChart.DefaultView.ChartArea.AxisX.AddRange(min, max, (max - min) / 2);

Sincerely,
Ves
the Telerik team

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