c# - System.Web.UI.DataVisualization.Charting missing error in .net 4.0? -



c# - System.Web.UI.DataVisualization.Charting missing error in .net 4.0? -

i'm trying utilize chart command in asp.net 4.0. while know required separate install part of 3.5, it's included default 4.0.

i can see chart command in toolbox, , can drag designer , see preview of chart. however, when seek compile website, error stating:

the type or namespace name 'datavisualization' not exist in namespace 'system.web.ui' (are missing assembly reference?)

i receive same error when take brand new page , add together following:

using system.web.ui.datavisualization;

any ideas? can understand why error in 3.5, no clue why receive in 4.0, when can see command in toolbox.

click on add together references in project , in .net components tab add system.web.datavisualization. should solve problem.

c# asp.net

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