Custom Runtime Graphs in VB.NET ?

Elfman · 15-11-2009 02:06AM #1

HI All,

I'm working on an app and I need to be able to pull info form a DB and create a visual representation of the data at runtime. The visual model needs to show the importance of an entities (from the DB) in relation to a user submitted query, and the relationship between said entities. In terms of graphs I would see this as something like various size circles (depicting the relevance of the entity to the query) and a line joining them to show relationships.

Can anyone suggest a way of doing this. I've looked at plug-ins and none of them seem to do what I need. I'm not using SQL server so i can't use reorting services. Has anyone done much with the basic drawing api's in .NET is this route worth exploring ? I'm using Visual studios 2008 and VB.NET

Thanks,

- Elfman

Ginger · 15-11-2009 07:01PM

Its fairly ok to do this in .NET using the System.Drawing namespace

This article (although written for ASP.NET) explains most of the fundamentals for you

http://msdn.microsoft.com/en-us/magazine/cc301375.aspx

Alternatively try this http://www.codeproject.com/KB/graphics/julijanpiechart.aspx

This does for pie charts (both) but the basic concept is similar. You would need to create a function that generates the circle and place it on your form and from that find the centre (basic maths) and create a line between the 2 centre points for example. Wash rinse and repeat

Custom Runtime Graphs in VB.NET ?

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