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Linq has ToList() on IQueryable<> and IEnumerable<>. It will cause a full pass through the data to put it into a list, though.

Sep 4, 2012 · You can always just call ToList () directly if you need to create a List<T> - abstracting inside of a second layer just confuses the API further. If you're trying to convert a non-generic IQueryable interface, you would need to do something like: public List<T> ConvertQueryToList<T> (IQueryable query) { return query.Cast<T>.ToList (); }

Oct 22, 2014 · If I have an IQueryable<T> I can simply do a .ToList() to convert it into a list and force the query to actually run on the database, but with the non-generic IQueryable, that method doesn't exists. This is because ToList is inherited from IEnumerable<T> which IQueryable<T> inherits and IQueryable , obviously, doesn't.

Use IQueryable when you have to run ad-hoc queries against data source like LinQ to SQL Server,Entity framework and other sources which implement IQueryable. Which is better …

I see that the type is different: When i do this: db.Member.ToList() then I get System.Collections.List<Member>; but with the code above i get ...

This is my code public List GetColumnNames(string tablename) { using (var Context = new MCPEntities()) { PropertyInfo info = Context.

An IQueryable to create a List<T> from. Returns Task < List < Object >> A task that represents the asynchronous operation. The task result contains a List<T> that contains elements from the …

The List class's constructor can convert an IQueryable for you: public static List<TResult> ToList<TResult>(this IQueryable source) { return new List<TResult>(source); } or you can just …

The first of your examples returns an IQueryable<T>, whereas in the second you're using IQueryable (without the Generic Type parameter). You can check out the two completely …

Both IQueryable and IEnumerable are interfaces in C#. ... Differences between IEnumerable and IQueryable ... ToList and ToArray Methods.

IQueryable An IQueryable to create a List<T> from. Returns Task < List < Object >> A task that represents the asynchronous operation. The task result contains a List<T> that contains elements from the input sequence. Attributes Suppress Message Attribute Remarks Multiple active operations on the same context instance are not supported.

Extension Method: C#. var list = tempTable.Select(s=>new { s.ID, s.Name }).ToList(); Linq: C#. var lists = from l in db.

Jan 19, 2023 · .AsQueryable() returns a EnumerableQuery<T> that wraps the list and provides the IQueryable interface. However, the .ToString()-method on this just seem to call the underlying collection, so it will still print {System.Collections.Generic.List1[ConsoleApp.Student]} in the debugger, or when converting it to string.

i want to Convert IQueryable<table1> to List<table1> but i dont know how do! please Help me Posted 9-Aug-12 20:45pm. Seyed Ahmad Mirzaee. Updated 21-Jun-18 6:06am …

If I have an IQueryable<T> I can simply do a .ToList () to convert it into a list and force the query to actually run on the database, but with the non-generic IQueryable, that method doesn't exists. This is because ToList is inherited from IEnumerable<T> which IQueryable<T> inherits and IQueryable, obviously, doesn't.

ToList<Employee>();. This where filter is executed on the client side where the IEnumerable code is. In other words all the data is fetched from ...

If I have an IQueryable<T> I can simply do a .ToList () to convert it into a list and force the query to actually run on the database, but with the non-generic IQueryable, that …

ToListAsync();. upon execution will be translated to the below REST OData query: _api/web/lists?$select=Id,Title,BaseTemplate,ContentTypes/Name ...

The List class's constructor can convert an IQueryable for you: public static List<TResult> ToList<TResult> (this IQueryable source) { return new List<TResult> (source); } or you can just convert it without the extension method, of course: var list = new List<T> (queryable); Share Follow edited Jul 10, 2013 at 2:54 answered May 23, 2013 at 14:35

.AsQueryable() returns a EnumerableQuery<T> that wraps the list and provides the IQueryable interface. However, the .ToString()-method on this just seem to call the …

Feb 9, 2020 · How to convert IQueryable type to a list view model. I'm working on an ASP.NET Core MVC project. In one of my controller class in its Details method, I have written code like this: public async Task<IActionResult> Details (int? id) { IQueryable query = Enumerable.Empty<Applicant ().AsQueryable (); if (id == null) { return NotFound (); } var applicant = await _context.Applicant .Include (a => a.ApplicantTypeNavigation) .FirstOrDefaultAsync (m => m.ApplicantId == id); if (applicant.

The IQueryable interface is intended for implementation by query providers. It is only supposed to be implemented by providers that also implement IQueryable<T>. If the provider does not also implement IQueryable<T>, the standard query operators cannot be used on the provider's data source.

ToList ();. When we call a database entity automatically the entity becomes IQueryable to be able to apply for example the corresponding ...

ToList is an extension method on IEnumerable which IQueryable implements. I'd normally think you weren't importing the Linq namespace, but since the other Linq methods seem to work I'm …

When you materialize your query by iterating or calling First(), ToList(), Sum(), Count()… upon IQueryable object, the query provider then know to execute ...

Remarks. The Cast<TResult> (IQueryable) method generates a MethodCallExpression that represents calling Cast<TResult> (IQueryable) itself as a constructed generic method. It then …