Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. Cast collection from IGrouping to IEnumerable, c# Linq or code to extract groups from a single list of source data, Convert / Cast IEnumerable to IEnumerable
, The specified cast from a materialized 'System.Int32' type to the 'System.Double' type is not valid. After decompiling that extension, the source showed this: This basically does nothing else than IEnumerable in first place. As long as you're only dealing with generics and types known at compile-time, there's no point in using IEnumerable - either use IEnumerable or IEnumerable, depending entirely on whether you're writing a generic method, or one where the correct type is already known. #, Dec 12 '08
Casting array to IEnumerable<T>. Enumerates a sequence and produces an immutable hash set of its contents. Thanks for contributing an answer to Stack Overflow! Correlates the elements of two sequences based on matching keys. publicinterfaceDBActive{voidWriteToDB();}, //Encapsulateyour'GetPropertyByName'methodasafunctionofyourclass. Microsoft makes no warranties, express or implied, with respect to the information provided here. Examples. Please change IQuerable<string> to IEnumerable<string> instead. Sign in to post your reply or Sign up for a free account. Not the answer you're looking for? LINQ) once? Enumerable.Cast<TResult> and Enumerable.OfType<TResult> methods are real life savers in those kind of situations. Sorts the elements of a sequence in descending order. Foreach on collection cast to IEnumerable work slower than without cast? Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. IEnumerable is the base interface for collections in the System.Collections.Generic namespace such as List, Dictionary, and Stack and other generic collections such as ObservableCollection and ConcurrentStack. Returns a collection of elements that contains the ancestors of every node in the source collection. Inside ConfigureServices (IServiceCollection services) of Startup.cs, add: This will load all AutoMapper profiles from the project assembly. Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. Dec 11 '08
Using LINQ to delete an element from a ObservableCollection Source. Cast received object to a List<object> or IEnumerable<object> It's just a funny case of "surprising, yet obvious". Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Invokes a transform function on each element of a sequence and returns the minimum Double value. Produces the set difference of two sequences according to a specified key selector function. Creates a Lookup from an IEnumerable according to a specified key selector function and key comparer. Download at: http://www.antdb.net/download, choose X86 version under Open Euler To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page. NewPluralEntityinsuredPlaces=insuredGroup.GetListOfPlaces(); NewPluralEntityfunPlaces=atRiskGroup.GetListOfPlaces(); foreach(WorkplacewininsuredPlaces)Console.WriteLine(w.Company); foreach(FunplacefinfunPlaces)Console.WriteLine(f.Name); //IfyouhaveNOIDEAwhatobjectyouaredealingwith,youcanstillhaveitexecute. . Casting is only relevant for the compile-time type. And if I go back and decide to change the type of the Customer.Orders down the track (say from ObservableCollection to IList) then I need to change that declaration too - something I wouldn't have to do if I'd used var in the first place. Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence. Returns the maximum value in a generic sequence according to a specified key selector function and key comparer. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. This question was completely edited. , Microsoft.Extensions.DiagnosticAdapter.Internal.ProxyList, Microsoft.Extensions.FileProviders.Composite.CompositeDirectoryContents, Microsoft.Extensions.FileProviders.IDirectoryContents, Microsoft.Extensions.FileProviders.Internal.PhysicalDirectoryContents, Microsoft.Extensions.FileProviders.NotFoundDirectoryContents, Microsoft.Extensions.Logging.FilterLoggerSettings, Microsoft.Extensions.Logging.Internal.FormattedLogValues, Microsoft.Extensions.Primitives.StringTokenizer, Microsoft.Extensions.Primitives.StringValues, System.Activities.Presentation.ContextItemManager, System.Activities.Presentation.Model.ModelItemCollection, System.Activities.Presentation.Model.ModelItemDictionary, System.Activities.Presentation.Model.ModelMemberCollection, System.Activities.Presentation.PropertyEditing.PropertyEntryCollection, System.Activities.Presentation.PropertyEditing.PropertyValueCollection, System.Activities.Presentation.ServiceManager, 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System.Collections.Generic.SortedDictionary.ValueCollection, System.Collections.Generic.SortedList, System.Collections.Generic.SynchronizedCollection, System.Collections.Generic.SynchronizedReadOnlyCollection, System.Collections.Immutable.IImmutableDictionary, System.Collections.Immutable.IImmutableList, System.Collections.Immutable.IImmutableQueue, System.Collections.Immutable.IImmutableSet, System.Collections.Immutable.IImmutableStack, System.Collections.Immutable.ImmutableArray, System.Collections.Immutable.ImmutableArray.Builder, System.Collections.Immutable.ImmutableDictionary, System.Collections.Immutable.ImmutableDictionary.Builder, System.Collections.Immutable.ImmutableHashSet, System.Collections.Immutable.ImmutableHashSet.Builder, System.Collections.Immutable.ImmutableList, System.Collections.Immutable.ImmutableList.Builder, System.Collections.Immutable.ImmutableQueue, System.Collections.Immutable.ImmutableSortedDictionary, System.Collections.Immutable.ImmutableSortedDictionary.Builder, System.Collections.Immutable.ImmutableSortedSet, System.Collections.Immutable.ImmutableSortedSet.Builder, System.Collections.Immutable.ImmutableStack, System.Collections.ObjectModel.Collection, System.Collections.ObjectModel.ReadOnlyCollection, System.Collections.ObjectModel.ReadOnlyDictionary, System.Collections.ObjectModel.ReadOnlyDictionary.KeyCollection, System.Collections.ObjectModel.ReadOnlyDictionary.ValueCollection, System.ComponentModel.Composition.Primitives.ComposablePartCatalog, System.Data.Common.DbBatchCommandCollection, System.Data.EnumerableRowCollection, System.Data.Linq.ChangeConflictCollection, System.Data.Objects.DataClasses.EntityCollection, System.Data.Objects.ObjectParameterCollection, System.Data.Services.Client.DataServiceQuery, System.Data.Services.Client.DataServiceResponse, System.Data.Services.Client.QueryOperationResponse, System.Diagnostics.ActivityTagsCollection, System.DirectoryServices.AccountManagement.PrincipalCollection, System.DirectoryServices.AccountManagement.PrincipalSearchResult, System.DirectoryServices.AccountManagement.PrincipalValueCollection, System.IdentityModel.Tokens.SecurityKeyIdentifier, System.IO.Enumeration.FileSystemEnumerable, System.IO.Packaging.PackagePartCollection, System.IO.Packaging.PackageRelationshipCollection, System.Net.Http.Headers.HeaderStringValues, System.Net.Http.Headers.HttpHeadersNonValidated, System.Net.Http.Headers.HttpHeaderValueCollection, System.Net.NetworkInformation.GatewayIPAddressInformationCollection, System.Net.NetworkInformation.IPAddressCollection, System.Net.NetworkInformation.IPAddressInformationCollection, System.Net.NetworkInformation.MulticastIPAddressInformationCollection, System.Net.NetworkInformation.UnicastIPAddressInformationCollection, System.Reflection.Metadata.AssemblyFileHandleCollection, System.Reflection.Metadata.AssemblyReferenceHandleCollection, System.Reflection.Metadata.BlobBuilder.Blobs, System.Reflection.Metadata.CustomAttributeHandleCollection, System.Reflection.Metadata.CustomDebugInformationHandleCollection, System.Reflection.Metadata.DeclarativeSecurityAttributeHandleCollection, System.Reflection.Metadata.DocumentHandleCollection, System.Reflection.Metadata.EventDefinitionHandleCollection, System.Reflection.Metadata.ExportedTypeHandleCollection, System.Reflection.Metadata.FieldDefinitionHandleCollection, System.Reflection.Metadata.GenericParameterConstraintHandleCollection, System.Reflection.Metadata.GenericParameterHandleCollection, System.Reflection.Metadata.ImportDefinitionCollection, System.Reflection.Metadata.ImportScopeCollection, System.Reflection.Metadata.InterfaceImplementationHandleCollection, System.Reflection.Metadata.LocalConstantHandleCollection, System.Reflection.Metadata.LocalScopeHandleCollection, System.Reflection.Metadata.LocalVariableHandleCollection, System.Reflection.Metadata.ManifestResourceHandleCollection, System.Reflection.Metadata.MemberReferenceHandleCollection, System.Reflection.Metadata.MethodDebugInformationHandleCollection, System.Reflection.Metadata.MethodDefinitionHandleCollection, System.Reflection.Metadata.MethodImplementationHandleCollection, System.Reflection.Metadata.ParameterHandleCollection, System.Reflection.Metadata.PropertyDefinitionHandleCollection, System.Reflection.Metadata.SequencePointCollection, System.Reflection.Metadata.TypeDefinitionHandleCollection, System.Reflection.Metadata.TypeReferenceHandleCollection, System.Runtime.CompilerServices.ConditionalWeakTable, System.Runtime.CompilerServices.ReadOnlyCollectionBuilder, System.Security.Cryptography.Cose.CoseHeaderMap, System.Security.Cryptography.X509Certificates.X509Certificate2Collection, System.Security.Cryptography.X509Certificates.X509ChainElementCollection, System.Security.Cryptography.X509Certificates.X509ExtensionCollection, System.Security.Principal.IdentityReferenceCollection, System.ServiceModel.Channels.MessageHeaders, System.ServiceModel.Channels.MessageProperties, System.ServiceModel.Channels.UnderstoodHeaders, System.ServiceModel.Configuration.CustomBindingElement, System.ServiceModel.Configuration.ServiceModelExtensionCollectionElement, System.ServiceModel.Dispatcher.IMessageFilterTable, System.ServiceModel.Dispatcher.MessageFilterTable, System.ServiceModel.Dispatcher.MessageQueryTable, System.ServiceModel.Dispatcher.XPathMessageFilterTable, System.ServiceModel.ExtensionCollection, System.ServiceModel.IExtensionCollection, System.Text.Json.JsonElement.ArrayEnumerator, System.Text.Json.JsonElement.ObjectEnumerator, System.Text.RegularExpressions.CaptureCollection, System.Text.RegularExpressions.GroupCollection, System.Text.RegularExpressions.MatchCollection, System.Web.ModelBinding.ModelBinderDictionary, System.Web.ModelBinding.ModelStateDictionary, System.Web.Services.Description.BasicProfileViolationCollection, System.Windows.Controls.ColumnDefinitionCollection, System.Windows.Controls.RowDefinitionCollection, System.Windows.Data.XmlNamespaceMappingCollection, System.Windows.Documents.DocumentReferenceCollection, System.Windows.Documents.DocumentStructures.FigureStructure, System.Windows.Documents.DocumentStructures.ListItemStructure, System.Windows.Documents.DocumentStructures.ListStructure, System.Windows.Documents.DocumentStructures.ParagraphStructure, System.Windows.Documents.DocumentStructures.SectionStructure, System.Windows.Documents.DocumentStructures.StoryFragment, System.Windows.Documents.DocumentStructures.StoryFragments, System.Windows.Documents.DocumentStructures.TableCellStructure, System.Windows.Documents.DocumentStructures.TableRowGroupStructure, System.Windows.Documents.DocumentStructures.TableRowStructure, System.Windows.Documents.DocumentStructures.TableStructure, System.Windows.Documents.PageContentCollection, System.Windows.Documents.TableCellCollection, System.Windows.Documents.TableColumnCollection, System.Windows.Documents.TableRowCollection, System.Windows.Documents.TableRowGroupCollection, System.Windows.Documents.TextElementCollection, System.Windows.Forms.NumericUpDownAccelerationCollection, System.Windows.Markup.INameScopeDictionary, System.Windows.Media.Animation.ClockCollection, System.Windows.Media.Animation.TimelineCollection, System.Windows.Media.CharacterMetricsDictionary, System.Windows.Media.Effects.BitmapEffectCollection, System.Windows.Media.FamilyTypefaceCollection, System.Windows.Media.FontFamilyMapCollection, System.Windows.Media.GeneralTransformCollection, System.Windows.Media.GradientStopCollection, System.Windows.Media.Imaging.BitmapMetadata, System.Windows.Media.LanguageSpecificStringDictionary, System.Windows.Media.Media3D.GeneralTransform3DCollection, System.Windows.Media.Media3D.MaterialCollection, System.Windows.Media.Media3D.Model3DCollection, System.Windows.Media.Media3D.Point3DCollection, System.Windows.Media.Media3D.Transform3DCollection, System.Windows.Media.Media3D.Vector3DCollection, System.Windows.Media.Media3D.Visual3DCollection, System.Windows.Media.PathFigureCollection, System.Windows.Media.PathSegmentCollection, System.Windows.Media.TextEffectCollection, System.Workflow.Activities.OperationParameterInfoCollection, System.Workflow.ComponentModel.ActivityCollection, System.Xml.Xsl.Runtime.XmlQueryNodeSequence, System.Xml.Xsl.Runtime.XmlQuerySequence, ToFrozenDictionary(IEnumerable, Func, IEqualityComparer), ToFrozenDictionary(IEnumerable, Func, Func, IEqualityComparer), ToFrozenSet(IEnumerable, IEqualityComparer), ToFrozenSet(IEnumerable, IEqualityComparer, Boolean), ToImmutableArray(IEnumerable), ToImmutableDictionary(IEnumerable, Func), ToImmutableDictionary(IEnumerable, Func, IEqualityComparer), ToImmutableDictionary(IEnumerable, Func, Func), ToImmutableDictionary(IEnumerable, Func, Func, IEqualityComparer), ToImmutableDictionary(IEnumerable, Invokes a transform function on each element of a generic sequence and returns the maximum resulting value. IEnumerable contains a single method that you must implement when implementing this interface; GetEnumerator, which returns an IEnumerator object. Nov 18 '08
Groups the elements of a sequence according to a key selector function. Some information relates to prerelease product that may be substantially modified before its released. Computes the sum of the sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence. Func, Func, Func, We and our partners use cookies to Store and/or access information on a device. Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. #. [Solved]-Cast object to IEnumerable-C# - AppsLoveWorld Technologies I am assuming Hi, Creates a HashSet from an IEnumerable. Invokes a transform function on each element of a sequence and returns the maximum Int32 value. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value. Produces the set intersection of two sequences by using the default equality comparer to compare values. Implementing IEnumerator also requires IDisposable to be implemented, which you will see in this example. For the non-generic version of this interface, see System.Collections.IEnumerable. Methinks not*, The next Access Europe meeting is on Wed 7 June - Northwind 2.0 Developer Edition Inventory and String functions, Adding up only highest 7 numbers in a table, How to deploy AntDB Community Version on a virtual machine on VMware WorkstationP2, How to deploy AntDB Community Version on a virtual machine on VMware WorkstationP3, The next Access Europe meeting is on Wed 5 July - Interactive Gantt Chart Scheduler in Access, publicabstractclassNewPluralEntity:ICollection,IEnumerable, publicclassWorkplaces:NewPluralEntity, publicArrayListGetNewPluralEntityPropertyUsingReflection(stringp_propertyName). However, I also prefer to use IEnumerable, f. Invokes a transform function on each element of a sequence and returns the minimum Int64 value. The object you are receiving is an enumerable? insuredGroup.PlacesToWork.Add(newWorkplace("GM")); insuredGroup.PlacesToWork.Add(newWorkplace("Chrysler")); insuredGroup.PlacesToWork.Add(newWorkplace("Ford")); //SOMEWHERE(anywhere)youwillhavetocreatetheAtRiskclassand,youwillknowwhatitis. Invokes a transform function on each element of a sequence and returns the maximum Double value. Produces a sequence of tuples with elements from the three specified sequences. Func, Func, Func, Although VMessage may contain the same members as Message, they are different and unrelated types, so you cannot cast from one to the other in C#.. What you need to do is convert each VMessage to a Message.. One way is to use LINQ: var convertMessages = listMessages.Select(x => new Message { IdTicket = x.IdTicket, IdMessage = x.IdMessage, Text = x.Text, }); var TData = new TicketData . Why does the explicit conversion of List<double> to IEnumerable<object It could be an array, a List, or whatever. Without dynamic (i.e. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer. If you want to convert single object to IEnumerable then, you should implement IEnumerable interface to 'Inventory' class. Unable Unable to cast object of type 'System.Data.Linq.DataQuery`1 System.Reflection.PropertyInfomyProperty=this.GetType().GetProperty(p_propertyName); objectres=myProperty.GetValue(this,null); System.Reflection.MethodInfomi=t.GetMethod("ToArrayList"). Returns elements from a sequence as long as a specified condition is true. ListtempList=newList(this.internalList.Count); foreach(Workplacewinthis.internalList)tempList.Add(w); //AnotherclasscontainingacollectionofFunplaces, publicAtRisk(){this.internalList=newFunplaces();}, publicFunplacesPlacesToPlay{get{returnthis.internalList;}}. To use AutoMapper in the web application, you need to install packages from NuGet. Add an AutoMapper profile class to the project. I have the following example classes: Hi All, atRiskGroup.PlacesToPlay.Add(newFunplace("Disneyland")); atRiskGroup.PlacesToPlay.Add(newFunplace("SixFlags")); atRiskGroup.PlacesToPlay.Add(newFunplace("SearsRacepoint")); //Thisassummesthatifyouknowyouarelookingforthepropertyname"Workplaces".