Forms Data Controls :: Using Dataset As Datasource For A Chart
Jan 19, 2011
I have an application that needs to read data from a view and do some extensive manipulation prior to delivering it to a chart control (without modifying the original data in the database). I have the chart control on the page, and in the code-behind I've built a dataset which I load and manipulate programmatically to have the table, columns and rows needed (no datareader involved) I'm having considerable trouble binding the chart to the 'in memory only' dataset. Chart Control;
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Code-behind; The arrays arDate(), arPropBase(), arPropRisk() and arProject() are declared and loaded prior to this code. I am certain that the arrays do contain valid data - I have verified that while debugging
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I have tried many different ways to bind the chart to my dataset at runtime without any success;
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Dec 5, 2010
I am trying to return a dataset. I must be doing something wrong. The returned dataset in this sample code indicates there is a datatable, Users, but there are no datarows. What am I doing wrong? This example is only using the rows.count, but of course I really need to use the whole datatable as the datasource for a gridview.
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Public Function getmyds() As DataSet
Dim dsUser1 As DataSet = New DataSet()
Dim tbUser1 As DataTable = dsUser1.Tables.Add("Users")
tbUser1.Columns.Add("UserName")
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tbUser1.Columns.Add("UserAccountControl")
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Jul 9, 2010
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Am I going mad/blind? Probably a combination of the two.
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I started using the awesome chart controls with my asp.net apps recently and so far they've been nothing short of breath taking. Right now I have a weird problem, on the first load of my page, the chart control appears correctly and the tooltip is correct, however, when I update it with new data, the chart displays correctly, but the tooltips are for the previous set of data.
I hope this makes sense. The first time I load the chart, the pie chart segments and tooltips are correct, after a partial postback (to get the new data), the pie chart segments are correct but the tooltips are for the previous data set.
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Here's how I set the tooltip:
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Anyone else noticed this behaviour and have a work around?
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for ......
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Apr 24, 2010
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Apr 23, 2010
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If anyone could provide sample code to use, or could provide a quick bit of code I could just copy and paste in and test,
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