Changes to Basics in Q1 2010

[Solomon]

Hello,

I am surprisingly having difficulty with my existing code after upgrading to Q1 2010. I have been using very general query functionality that seems to be broken after I upgrade. Most of this seems to be centered around the absence of Telerik.OpenAccess.Query namespace. 

Can someone tell me the equivalent of the following code in VS2010?

public static Customer GetCustomerByEmailAddress(string emailAddress)
        {
            IObjectScope objectScope = ObjectScopeProvider.ObjectScope();

            IObjectScopeQuery<Customer> customers = from x in objectScope.Extent<Customer>()
                                                    where x.EmailAddress == emailAddress.ToLower()
                                                    select x;

            if (customers.ToList().Count > 0)
            {
                return customers.ToList()[0];
            }

            return null;
        }

This would probably open alot of doors for me just to see this working. I am dead in the water right now.

[Andreas]

Hello Solomon,

An error message would help but my first guess would be have you included the Telerik.OpenAccess.35.Extensions assembly?
If you have upgraded to .NET 4 you will also need Telerik.OpenAccess.40.Extensions

[Solomon]

I am getting the following compile error.

• The type or namespace name 'IObjectScopeQuery' could not be found (are you missing a using directive or an assembly reference?

I have references to Telerik.OpenAccess.35.Extensions but that does not seem to fix the problem. I have see other places where this was suggested, but no luck. 

I am also importing System.Linq now where I did not have to do this in earlier versions of OpenAccess. No big deal.

I am still running 3.5.

Thanks for you help thus far!

Sol

[Solomon]

Just using this compiles. I will let you know how it behaves at runtime...

public static Customer GetCustomerByEmailAddress(string emailAddress)
        {
            IObjectScope objectScope = ObjectScopeProvider.ObjectScope();

            IQueryable<Customer> customers = from x in objectScope.Extent<Customer>()
                                                    where x.EmailAddress == emailAddress.ToLower()
                                                    select x;

            if (customers.ToList().Count > 0)
            {
                return customers.ToList()[0];
            }

            return null;
        }

Thanks.

Sol

[Andreas]

for arrays I do this

var res = from x ...
res.ToList<ObjectType>();

I have checked IObjectScopeQuery you are right you must use IQueryable
because Telerik did make some internal changes.

But I think the more generic way with a none declared type using the var keyword should always be safe.