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Chart Low Performance

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97086 Oct 27,2010 04:27 AM Oct 28,2010 02:21 AM Silverlight 1
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Tags: Chart
Volodymyr
Asked On October 27, 2010 04:27 AM

Hello

I tried to use Chart control for silverlight, but I got several problems with it. Example You can find here http://untillweb.com/chart_test/Syncfusion.Chart.Silverlight.Samples_2010TestPage.aspx.

Could You explain me, please, how I can:
1. Display DataPoint Label which includes info about X and Y coordinates (like in attached file example.jpeg)
2. Display tooltip with the same info as DataPoint Label (1)
3. In my silverlight chart are only 2 series with 100 point, but zoom and scroll functionality are very slowly. In my real project I need to display more 10 series with more 1000 point. (How I can improve zoom and scroll performance for chart?)
4. Interval of axis X must be 1 and string value of axis x can be bigger than in silverlight chart
5. Use tooltip and zoom functionality at the same time

The most important for me is the 3 point from list of questions.

Please help me.

Thanks,
Volodya.




example_7d373a0d.rar

Sujitha S [Syncfusion]
Replied On October 28, 2010 02:21 AM

Hi Volodya,

Thanks for your interest in Syncfusion product.

I have created a simple sample to meet your requirement. please find the uploaded sample.

1. We donot have support to bind both X and Y value to the Label, Please create the incident in our Direct trac so that we will provide you the custom patch with this support.

2. We can get the X and Y value in the ToolTip by customizing the ToolTip using the Template property. please refer to the attached sample.

3. Performance can be increased by using the BeginInit() and EndInit() methods in the ChartArea.
code snippet:

Chart1.Areas[0].BeginInit();
AddDataToSeries();
Chart1.Areas[0].Series[0].DataSource = coll;
Chart1.Areas[0].Series[0].BindingPathX = "TaskName";
Chart1.Areas[0].Series[0].BindingPathsY = new List { "Y" };
Chart1.Areas[0].EndInit();

4.Setting the interval as 1 will take time to render the axis, gridlines and labels for each DataPoints so I have set the Interval as 20 for 100 DataPoints.

5. ToolTip can be added in the Zoomed ChartArea, please refer to the sample.

Let me know, if you have any queries.


Regards,
Sujitha S








SampleApp_1_e5f47039.zip

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