In C#, bothIEnumerableandIQueryableinterfaces are used for querying collections of data, but they serve different purposes and have different capabilities. Here's a breakdown of the differences between them: 1. IEnumerable Interface in C# Defined in theSystem.Collectionsnamespace. ...
public static IEnumerable<TResult> SelectMany<TSource,TResult> (this IEnumerable<TSource> source, Func<TSource,int,IEnumerable<TResult>> selector); In this overload, we also have a selector function accepted as a parameter, but we add a second parameter that represents the index of the elem...
"IEnumerable<T>'requires '1' type arguments" error "Member names cannot be the same as their enclosing type." "MS Paint" source code is required please "No mapping exists from object type System.Collections.Generic.List "No Overload for method takes 2 arguments" "Object is currently in use...
ASP.NET MVC and IEnumerable property in Model ASP.Net MVC and token auth instead of form auth ASP.NET MVC application cannot access a file on shared folder in a remote machine Asp.net mvc attribute routing produces 404 error on subsequent requests asp.net mvc c# dynamic checkboxes getting con...
What is the difference between IQueryable and IEnumerable? Answers (4) Hi Rehman, If you are use IEnumerable when querying data from in-memory collections like List, Array collection etc And when querying data from out-memory (like remote database, service) collections so you are use IQueryabl...
What happens when you call C.DoIt<string>? Many people expected that “string” is printed, when in fact “everything else” is always printed, no matter what T is. The C# specification says that when you have a choice between calling ReallyDoIt<string>(string) and Really...
This is one of the main differences between object and dynamic –with dynamic you tell the compiler that the type of an object can be known only at run time, and the compiler doesn’t try to interfere. As a result, you can write less code. And I want to emphasize that this...
Some Non-generic Collection classes are ArrayList, SortedList, Stack, Queue and HashTable. Each collection class implements the IEnumerable interface. It helps to iterate through the elements of the items in the collection using theforeach loop. ...
// SelectMany flattens it to just a list of phone numbers. IEnumerable<PhoneNumber> phoneNumbers = people.SelectMany(p => p.PhoneNumbers); // And to include data from the parent in the result: // pass an expression to the second parameter (resultSelector) in the overload: var...
Binding to a Grid Column Width and Row Height Binding to a list of lists Binding to a Main Window Property Binding to an element in dynamic array. Binding to DataContext not Working Binding to DateTime Field and Formatting to ShortDate in WPF Binding to DateTime.Now Binding to Enum in DataG...