AddMonth function in LINQ to Entities

The method 'System' is not recognized by LINQ to Entities. Linq.IQueryable

To solve the problem quickly, add a.ToList() before your select (...).... ViewDet = _db.Grp.ToList().Select(gh => new MultiDetailViewModel ...) ...By employing this method, the original request will query the database, return the results, and then be reprojected using a select statement against Linq to objects....But I have to wonder why there isn...

Linq to Entities vs. Linq to SQL vs. Entity Framework

Entity Framework allows for the development of queries in one of two ways:...Entities with Linq ( ...http://msdn.microsoft.com/en-us/library/bb386964.aspx... )...SQL Entity ( ...http://msdn.microsoft.com/en-us/library/bb387145.aspx... )...L2E is a component of EF rather than a distinct technology....For comparison, have a look at this article: ...h...

The LINQ expression node type 'Invoke' is not supported in the entity framework's LINQ to Entities.

The AsExpandable() function created by Joe Albahari and included in LINQKIT may be used to remedy this issue. He is the same person behind...PredicateBuilder... thing you're utilizing, I see....If querying with Entity Framework, change the last line to this:...return objectContext.Products.AsExpandable().Where(predicate);...You may download the LIN...

LINQ-To-Entity (LINQ to Entities does not support the given type member ".)

There you will find the response to your inquiry: ...Can I make a linq to entity query on fields that are not members of an entity?...You can only utilize "entity members," which are attributes that are declared within your data table, when employing those LinQ to entity queries....You must utilize attributes that are specified in your Data Model s...

LINQ to Entities does not recognize the method 'System.TimeSpan Subtract(System.DateTime)' method

You might utilize the...EntityFunctions.DiffDays... method...EntityFunctions.DiffDays(product.EventDate, DateTime.Now) //this will return the difference in days ...UPDATE...Use DBFunctions in its place because EntityFunctions is now out of date....System.Data.Entity.DbFunctions.DiffDays(product.EventDate, DateTime.Now)

LINQ to Entities does not recognize the method 'System.Linq.IQueryable`

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LINQ to Entities does not recognize the method 'System.String StringConvert(System.Nullable`1[System.Double])

I had the similar issue and discovered that I was utilizing the incorrect kind of SqlFunctions. Verify that the proper namespace was referenced:...using System.Data.Entity.SqlServer; ...but not:...using System.Data.Objects.SqlClient;

LINQ to Entities does not recognize the method 'System.DateTime ToDateTime(System.String)' method

Your date column is a string—why? Why is it not a...DateTime... ?...In any case, you'll see that problem if you try to execute conversions using.NET methods in a.Where statement against a repository of entities....Changing that column from a string to a DateTime and continuing from there would be your best course of action. in that case, the....Whe...

LINQ to Entities does not recognize the method 'Int32 IndexOf(System.String, System.StringComparison)' method

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LINQ Query to LINQ Method; Why do I need CBool?

Use the Value method to get a nullable variable's underlying value. This holds true for both c# and vb.net....TotalYearWages = If(DB.interview_earnings. Where(Function(t) t.IID = Input.ID AndAlso t.EarningsYear.Value = Input.EarningsYear). Select(Function(t) t.Amount).Sum(), 0) ...I suggest you make these two fields the same type in your da...