Anas Ghanem

I was upgradting one of the DNN portals to ASP.NET 4.After Upgrading completed and when i configured it to run under asp.net 4 in iis, I started to get that exception on every postback.

Before you start the migration, i suggest to read .NET 4 migration issues and breaking changes which can be found here.

I just wanted to mention that one of the cool enhancements in VS 2010 is that the “Add reference “ dialog will show up quickly and will load the assemblies on demand.

In most cases, You will get that error when you are using a data source control(like ObjectDataSource) without setting it’s SelectMethod  as data source for the DetailsView control.

Misuse ? Yes it is !

The location element is used to restrict user or role access on a specific path.The path could be a folder,aspx page,ashx,axd or any other file that is handled by ASP.NET runtime.

While working with Membership and roles providers, you may need to create the users based on your data and give them a random password.For example, you may have a table with customers and you want to give each customer a user/password to login to your system.

Hi,