.Net 3.5 System.Web.UI.DataVisualization namespace does not exists

Category: .Net

I was trying to compile an inherited VB .Net code that uses .Net 3.5 framework. When I compiled, it gave the following error

The type or namespace name 'DataVisualization' does not exist in the namespace 'System.Web.UI' (are you missing an assembly reference?)

Whatever answers I tried to find online could not give me details for .Net 3.5. I would get answers for .Net 4.0 and above but not for .Net 3.5. Microsoft documentation did not provide any hint. Finally I found out that there a Microsoft Chart Control for .Net Framework 3.5 that I need to install. Once I installed that program, solution compiled without any issue.

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