Cannot convert lambda expression to string
WebJul 27, 2016 · Error CS1660 Cannot convert lambda expression to type 'string' because it is not a delegate type BTKPI Why does this not work? How can I fix that? I have already looked at this SolutionProposal, but this didn't helped, because the model, Linq and Data.Entity is already referenced. c# asp.net-mvc entity-framework model-view-controller … WebThe expression in your FirstOrDefault method isn't right - it wants an expression that returns a bool and you give it user => user.userID which returns an int.. Just rewrite it to account for the parameter you're passing in: user => user.userID == userID That said, if there wouldn't be 2 users with the same ID you're probably better off with …
Cannot convert lambda expression to string
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WebApr 26, 2013 · 1 Answer. var typedExpression = (Func)Expression.Lambda (funcType, itemPredicate, parameter); //Fails. This is not surprising, as you have to Compile a LambdaExpression in order to get an actual delegate that can be invoked (which is what Func is). // This is no longer an expression and cannot be used with … WebThe lambda expression casts the object parameter to DynamicClass and accesses the Foo property. We can then compile the lambda expression into a delegate using the Compile method, and call it with an instance of DynamicClass. The dynamic value returned by the lambda expression is assigned to a dynamic variable, and we print it to the console.
WebMay 9, 2014 · 3 Answers Sorted by: 5 Taken from Cannot convert lambda expression to type 'string' because it is not a delegate type This worked for me. The Include () method with Entity Framework 4.1 has extension methods and it also accepts a lambda expression. So context.CustomerSites.Include (c => c.Customer); WebNo, you cannot use an implicit operator to replace the ToString method in C#. An implicit operator is a member that allows for implicit type conversions between two types. It is typically used to convert an instance of one type to an instance of another type. On the other hand, the ToString method is used to convert an object to its string ...
WebThe Include method expects a string, not a lambda: public ViewResult List() { var sites = context.CustomerSites.Include("Customer"); return View(sites.ToList()); } Of course you … WebJan 7, 2024 · Cannot convert lambda expression to type 'IValueResolver' because it is not a delegate type. What exacly is the problem here? I have used plenty of ternary operators elsewhere in my code, but for some reason this nullable SmartEnum case has some kind of problem. entity: …
WebFeb 14, 2014 · In the orderby expression I get Cannot convert lambda expression to type 'string' because it is not a delegate type. What the code is supposed to do is sort my "buyers" by number of "visits" they had in last 3 months. Buyers is entity that has List of Visits and Visit has DateTime VisitStart
WebApr 10, 2024 · It gives LINQ to Entities does not recognize the method 'Int64 ToInt64(System.String)' method, and this method cannot be translated into a store expression. on runtime. Now as I'm trying to achieve..Where(lcf => { long bigval = Convert.ToInt64(cu.LineId); return lcf.BillLineId == bigval; }) open td ameritrade hsa accountWebThe Include method expects a string, not a lambda: public ViewResult List() { var sites = context.CustomerSites.Include("Customer"); return View(sites.ToList()); } Of course you could write a custom extension method which would work with lambda expressions and make your code independant of some magic strings and refactor friendlier. open td bank savings accountWebCast the lambda expression to object: If you cannot use a delegate type, you can cast the lambda expression to object explicitly before passing it to the method. This tells the compiler to treat the lambda expression as an object. csharpobject obj = (object) (s => s.Length); SomeMethod(obj); By using one of these solutions, you should be able ... ipc eagle ct160WebNov 10, 2014 · Cannot convert lambda expression to type 'string' because it is not a delegate type This error comes sometimes when you have missed the namespace for linq using System.Linq; or using System.Data.Entity; Mehdi and Griff are absolutely correct that you have missed out double equals, please just keep in mind and check for the … ipc eagle 664 sweeper parts manualWebNov 14, 2024 · When default values or params modifiers differ in a conversion, the source one will be unused if it's in a lambda expression, since the lambda cannot be called in any other way. That might seem counter-intuitive to users, hence a warning will be emitted when the source default value or params modifier is present and different from the target one. ipc eagle ct30 battery charger manualWebMay 23, 2010 · Cannot convert lambda expression to type System.Collections.Generic.IComparer' because it is not a delegate type I investigated this for quite some time but I still don't understand it.Maybe my understanding of IComparer is not quite good.Can somebody give me a hand ? c#-3.0 Share Improve this question … ipc eagle ct110ipc eagle 464 sweeper