CodeBehind class not accessible to code in App_Code folder

Question

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.

devio · Accepted Answer · 2010-01-31 08:13:30Z

2

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

answered Jan 31, 2010 at 8:13

devio

37.3k7 gold badges85 silver badges147 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

ProfK Over a year ago

Good idea, but a bit of work. Pity we have to do this. For now, I'm just taking the ShiftViewTemplate out of App_Code. It is UI code after all.

Collectives™ on Stack Overflow

CodeBehind class not accessible to code in App_Code folder

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related