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Editorial Team
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Asked: 2026-05-13T14:08:57+00:00

I have a PlannerShiftView user control in the root folder of my ASP.NET web

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I have a PlannerShiftView user control in the root folder of my ASP.NET web site. In my App_Code folder, I have a ShiftViewTemplate class that needs to instantiate a PlannerShiftView (for a TemplateField in a GridView). The problem is, the following code doesn’t compile because the PlannerShiftView type is not available in what I deem to be the App_Code ‘phantom namespace’.

Please can somebody explain to be what is happening here, as well as what to do. I know I can just move the ShiftViewTemplate out of App_Code, going against convention and without explantion, but that is something of a hollow victory.

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1 Answer

  1. Editorial Team

    ASP.Net websites do not compile into a single assembly, but into several ones. Therefore the code of your user control in not referenceable by the App_Code assembly.

    The way I solved a similar case:

    • declare an IPlannerShiftView interface in App_Code or an external assembly

    • declare the PlannerShiftView control as implementing the IPlannerShiftView interface

    • instantiate the control using Page.LoadControl, and cast to interface

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