Microsoft Silverlight charting odd interval -

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in simple microsoft chart control in silverlight have days of 1 month dates on x axis , double values on y axis. display every second day on x axis days should odd days.

if set intervaltype="days" , interval="2" numbering starts day 2. if put dummy date in front or in end or both.

instead of: __ 02 __ 04 __ 06 __ 08 __ 10 ...

i need: 01 __ 03 __ 05 __ 07 ...

how can achieve in simplest way?

example set 31.01 -> 1.02 -> 3.02 instead of 31.01 -> 2.02. in case 1 way write custom axis similar datetimeaxis.

at first copy project following files:

  • c:\program files\microsoft sdks\silverlight\v4.0\toolkit\apr10\source\source code.zip\controls.datavisualization.toolkit\enumerablefunctions.cs
  • c:\program files\microsoft sdks\silverlight\v4.0\toolkit\apr10\source\source code.zip\controls.datavisualization.toolkit\valuehelper.cs

copy these files same namespace, internal there not name conflict. next, add extended class datetimeintervaltype:

namespace system.windows.controls.datavisualization.charting {     /// <summary>     /// date time interval.     /// </summary>     public enum extendeddatetimeintervaltype     {         /// <summary>         /// automatically determine interval.         /// </summary>         auto = 0,          /// <summary>         /// interval type milliseconds.         /// </summary>         milliseconds = 1,          /// <summary>         /// interval type seconds.         /// </summary>         seconds = 2,          /// <summary>         /// interval type minutes.         /// </summary>         minutes = 3,          /// <summary>         /// interval type hours.         /// </summary>         hours = 4,          /// <summary>         /// interval type days.         /// </summary>         days = 5,          /// <summary>         /// interval type weeks.         /// </summary>         weeks = 6,          /// <summary>         /// interval type months.         /// </summary>         months = 7,          /// <summary>         /// interval type years.         /// </summary>         years = 8,          /// <summary>         /// interval type odd days         /// </summary>         odddays = 9     } }

to make new member odddays work, i've changed class datatimerangeaxis. here link on pastebin, because programmers of don't pay attention such trifle answers long explanation.

change namespace silverlightapplication3 whatever want (except system.windows.controls.datavisualization.charting).

also i've commented code @ last function, because contains many dependencies , didn't want copy files application. axis works fine without code, function isn't used @ all.

the important part of class in function incrementdatetime:

        //the interval type forced user, not actual interval type         if (this.intervaltype == extendeddatetimeintervaltype.odddays)         {             datetime newdate;             if(span != timespan.zero) //automatically created interval                 newdate = date.add(span);             else newdate = date.adddays(interval); //else use interval set user              //find nearest odd day             while (newdate.day % 2 != 1)                 newdate = newdate.adddays(1);             //update span             span = newdate - date;         }

xaml so:

        <charting:chart.axes>             <local:datetimeaxis intervaltype="odddays" orientation="x" interval="1"/>         </charting:chart.axes>

you can set interval="2" instead of 1, skip day in set 31.01-1.02-3.02, better use value 1.


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