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DateTime

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Giuliano Caetano asked on 16 Jul 2012, 04:37 PM

Hi, Telerik Team.
I have a following definition for my XAxix:

defChart.PlotArea.XAxis.DataLabelsColumn = "DoubleDateTime"; 

defChart.PlotArea.XAxis.IsZeroBased =

false;

defChart.PlotArea.XAxis.AutoScale = true;

defChart.PlotArea.XAxis.Appearance.ValueFormat = ChartValueFormat.LongDate;

defChart.PlotArea.XAxis.Appearance.CustomFormat = "dd HH:mm";

defChart.PlotArea.XAxis.LayoutMode = ChartAxisLayoutMode.Inside;

The DateTime objects was converted to ToOADate().

The data source is something like this:

Date Value

2012-07-11 09:40 22

2012-07-11 09:41 15

2012-07-11 09:43 16

2012-07-11 09:43 17

2012-07-11 09:44 16

Note that, the 09:42 is missing and I have duplicate value to 09:43.

So, I have problem to show a timeline for DateTime in XAxi (a timeline with one entry for each minute).
I realy need include into data source a entry to 09:42 and agregate the 09:43, to obtain a timeline?

Thanks
Giuliano Caetano

2 Answers, 1 is accepted

Accepted

answered on 19 Jul 2012, 09:13 AM

You can build the items manually - for e.g. instead of binding to the exact DateTime value. You can do the following:

Date Value

1) 2012-07-11 09:40 22

2) 2012-07-11 09:41 15

3) 2012-07-11 09:43 16

4) 2012-07-11 09:43 17

5) 2012-07-11 09:44 16



Create the series programmatically, get the data from your DataSource and then Sort the items by DateTime and add them consequentially:

chart1.Series[k].Items.Add(new ChartSeriesItem(i++, Value); //which is (X value, Y Value)

so instead of specifying a DateTime for X-Value, specify consequential integers. This way you will have one column for each item (you can later rename the X-Axis labels to show the time). 



However, this is only if you are sure that the items are always consequential and one minute apart from each other.