Cannot convert lambda expression to string

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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; }) WebNov 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 …

c# - MVC: DropdownListFor error "cannot convert lambda expression to ...

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 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. raymond holt jr alachua county

How to resolve Cannot convert lambda expression to type …

WebCast 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 … WebAug 20, 2024 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams WebApr 21, 2016 · To make it compilable try x => { return null; }. To Return the current value try x => x.GetValue (instance, null) (but in that case try to add a where clause that removes all indexers). There is an overload of ToDictionary that takes an IEqualityComparer and your lambda could not be converted into that. – Sebastian Schumann Apr 21, 2016 at 7:52 simplicity\u0027s ok

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Cannot convert async lambda expression to delegate

WebMar 8, 2024 · The delegate type to which a lambda expression can be converted is defined by the types of its parameters and return value. If a lambda expression doesn't return a value, it can be converted to one of the Action delegate types; otherwise, it can be converted to one of the Func delegate types. WebOct 4, 2013 · Cannot convert lambda expression to type 'string' because it is not a delegate type [duplicate] Closed 8 years ago. int Value = 1; qryContent objContentLine; using (Entities db = new Entities ()) { objContentLine = (from q in db.qryContents where … simplicity\\u0027s ohWebApr 20, 2024 · Error CS1660 Cannot convert lambda expression to type 'string' because it is not a delegate type modelBuilder.Entity () .HasMany (u => u.GroupUsers) .WithOne (g => g.Group); The configuration for GroupUsers doesn't show any errors, but since the GroupAdmin -part isn't working, I haven't tested it. c# asp.net-core entity … simplicity\\u0027s ok

"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 … " - Cannot convert lambda expression to string

Cannot convert lambda expression to string

Cannot convert lambda expression to delegate type

WebApr 23, 2014 · Ensure if you using a lambda to point to a constructor that the constructor can be called in the same way in a normal instantiation statement. i.e. return x => new FakeObject (); say in the case of var fake = new FakeObject (); would not work then the lambda will also fail so be careful. Share Improve this answer Follow WebCannot convert lambda expression to type 'System.Delegate' – StayOnTarget Jan 22, 2024 at 12:51 Add a comment 2 Answers Sorted by: 14 If you want an Anonymous Method, you'll have to declare one which returns a Task as it is marked with the async modifier, hence must return a void (only for async event handlers), Task or Task :

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WebDec 10, 2024 · In my case I was unable to get a lambda expression to work, but I still needed to have an argument to pass to the next method, so I ended up using an Action (). This works with custom components as well. I have modified this slightly from what I am using, as I am using an enum instead of a bool. WebSep 3, 2014 · Cannot convert lambda expression to type 'object' because it is not a delegate type with an int 3 MVC Cannot convert lambda expression to type because it is not a delegate

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 … WebJul 17, 2015 · @shahkalpesh its not very complex. See it this way, the Lambda class has an identity conversion method called Cast, which returns whatever is passed (Func).Now the Lambda is declared as Lambda> which means if you pass a Func to Cast method, it returns Func back, since T in …

WebNov 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 … 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);

WebDec 8, 2014 · Compiler Error Message: CS1660: Cannot convert lambda expression to type 'string' because it is not a delegate type Source Error: Line 8: .Columns (columns => Line 9: { Line 10: columns.Bound (p => p.Name).Title ("Card ID").Width (130); Line 11: columns.Bound (p => p.State).Title ("State").Width (130); Line 12: columns.Bound (p => … raymond homanWebJul 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 … raymond holt memeWebЯ в процессе создания Lambda Expression для метода IQueryable, следующим является мой код метода расширения, который мне нужно вызвать наподобие:. queryableData.GroupBy("ID") queryableData.GroupBy("Name") simplicity\\u0027s olWebAug 16, 2024 · Cannot convert lambda expression to type "bool" because it is not a delegate type. I am unsure what this errors means and how to work around it. If anyone has any help or advice I would greatly appreciate it. c# asp.net-mvc lambda Share Follow edited Aug 16, 2024 at 8:37 Gilad Green 36.5k 7 59 95 asked Aug 16, 2024 at 8:22 … simplicity\u0027s ojWebJun 21, 2013 · Cannot convert async lambda expression to delegate type ' System.Func '. An async lambda expression may return void, Task or Task, none of which are convertible to ' System.Func '. I've tried various permutations of Func assignment without any luck, the only way I can get the code to work is to make the … raymond holt 99WebCast 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 ... simplicity\u0027s ooWebThe 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 … raymond holt md