Entity Framework - Cannot convert lambda expression to type 'string' because it is not a delegate type

Question

I am using Entity Framework in my C# based code. I am running into an unexpected weirdness and am looking for suggestions.

Case 1, 2, 3, 4... Projects:
RivWorks

Answer 1

In my case, I had the

Using System.Linq;

but I was missing the && after a where clause item.

Bad Code:

item.Group.ID == grp.ID
p.Product_Status_Flag == 1 &&
item.Valid

Correct Code ( with no error ):

item.Group.ID == grp.ID && // <- This was missing and I didn't see it right away.
p.Product_Status_Flag == 1 &&
item.Valid

I hope this saves someone some time.

Answer 2

Just Try using System.Linq; I think it will help you to sort out this issues.

Answer 3

In my case I had this error when trying to use Include in clientContext.Load in a Sharepoint 2013 app.

I had included Sharepoint client library like so:

using SP = Microsoft.SharePoint.Client;

To fix, in addition I also added it without the namespacing:

using Microsoft.SharePoint.Client;
using SP = Microsoft.SharePoint.Client;