dbfunctions

问题 I'm not sure that my question Title is perfect - so please allow me to explain a little further. Here's a snapshot of some test data: Here's my code: Function TestDb() As ActionResult Dim clientLocId As Integer = 23 Dim showDate As New Date showDate = New Date(2015, 8, 14) 'showDate = New Date(2015, 9, 22) 'showDate = New Date(2015, 9, 27) Dim orderRecs = db.Orders.Where(Function(x) x.ClientLocationId = clientLocId AndAlso x.OrderNumber IsNot Nothing _ AndAlso x.DateCompletedUtc IsNot Nothing

问题 How can I use SQL Server JSON_VALUE function in EF 6 Code First for classic .NET? I found I can do it in EF Core like this: public static class JsonExtensions { public static string JsonValue(string column, [NotParameterized] string path) { throw new NotSupportedException(); } } // In OnModelCreating modelBuilder.HasDbFunction(typeof(JsonExtensions).GetMethod(nameof(JsonExtensions.JsonValue))) .HasName("JSON_VALUE") .HasSchema(""); // And then the usage var result = db.Blogs.Select(t =>