Data Binding Microsoft Chart Control

re: Data Binding Microsoft Chart Control

templeton7 — Tue, 14 Apr 2009 02:50:14 GMT

Hi,

I'm trying to bind to nearly identical data source in your DataBindTable example but a "Specified method is not supported" exception is thrown. I'm using an oracle data reader and the query returns 1 text column (my "x") and 4 numeric columns.

Any ideas why I'm getting this error? Thanks.

re: Data Binding Microsoft Chart Control

alexgor — Wed, 15 Apr 2009 18:26:50 GMT

This maybe caused by the Reset() method we call internally in DataBindTable. Please make sure that data source you are using supports resetting.

Alex.

Problem with DataBindCrossTable, Empty between series

jmora — Thu, 18 Jun 2009 19:37:38 GMT

I have:

'datasource from a linq

chart.DataBindCrossTable(query.ToList(), "Users", "Month", "Tries", "")

'set the chart type to stacked column

For Each serie As Series In chart.Series

serie.ChartType = SeriesChartType.StackedColumn

It works fine, but...

here an example of data (Month,Users,Tries)

5,User1,10

5,User2,50

5,User3,8

6,User1,4

6,User4,20

the first column its ok but WHEN the chart build the last serie(User4) the second column have a EMPTY SPACE between the first serie and the last.

Try it!

It happends with other chart type like normal bars. TNKS

re: Problem with DataBindCrossTable, Empty between series

jmora — Fri, 19 Jun 2009 00:17:18 GMT

Solve!

this line solve the problem, (I don´t know why)

chart.DataManipulator.InsertEmptyPoints(1, IntervalType.Number, seriesNames)

where seriesNames is a string with the series names separate by commas "User1,User2,..."

For more information see:

http://social.msdn.microsoft.com/Forums/en-US/MSWinWebChart/thread/a356d155-7f81-48c5-9d3c-b8d8fb7f2af4

Bye,

Jaime Mora

re: Data Binding Microsoft Chart Control

jbarsotti — Thu, 20 Aug 2009 07:33:33 GMT

So what if people are manipulating the data in other areas of the form.

Normally after a datachange you just call refresh on the form and all databound information gets updated.

When I do this the chart stays stale and doesn't update till I call an explicit DataBind to rebind the data.

Am I missing something?

re: Data Binding Microsoft Chart Control

alexgor — Mon, 12 Oct 2009 16:30:27 GMT

Binding and re-painting the chart can be a time consuming operation and chart does not automatically update itself on every data source change. You will need to re-bind the chart as nessesary when the data source is changed.

Alex.