ADO.NET :: Can't Render FormView With EntityDatasource In Design Mode
Sep 10, 2010
I'm not sure if I'm placing this in the right spot but since it has to do with Entity Framework I put it here. Here's the deal. I have a FormView bound to an EntityDataSource. The FormView is a part of a user control. In design view on the user control, the formview and the entity datasource show up as expected. However once I put the user control in an aspx page, the formview won't show up. The entity datasource shows, but the formview doesn't.
Instead I get this message in design view: "There was an error rendering the control. Value cannot be null. Parameter name: owner" I don't have any parameters in my datasource or formview called owner. Is it talking about the database owner. By way of comparison, I put a SqlDatasource on the page and tied it to a formview. It showed in design view on both the user control and the aspx page. So that led me to believe it has something to do with the formview being bound to the entity datasource.
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