Rowversion comparison in Entity Framework

Question

How should I compare rowversion fields using Entity Framework? I have one table which has a rowversion column, I want to get data from tables for which

Answer 1

Here is what we did to solve this. Use a compare extension like this:

public static class EntityFrameworkHelper
{
    public static int Compare(this byte[] b1, byte[] b2)
    {
        throw new Exception("This method can only be used in EF LINQ Context");
    }
}

Then you can do this:

byte[] rowversion = .....somevalue;
_context.Set().Where(item => item.RowVersion.Compare(rowversion) > 0);

The reason this works without a C# implementation is because the Compare extension method is never actually called, and EF LINQ simplifies x.Compare(y) > 0 down to x > y.