Qbservable.DistinctUntilChanged<TSource> Method (IQbservable<TSource>)

Returns a queryable observable sequence that contains only distinct contiguous elements with a specified source.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive.Providers (in System.Reactive.Providers.dll)

Syntax

'Declaration
<ExtensionAttribute> _
Public Shared Function DistinctUntilChanged(Of TSource) ( _
    source As IQbservable(Of TSource) _
) As IQbservable(Of TSource)

'Usage
Dim source As IQbservable(Of TSource)
Dim returnValue As IQbservable(Of TSource)

returnValue = source.DistinctUntilChanged()

public static IQbservable<TSource> DistinctUntilChanged<TSource>(
    this IQbservable<TSource> source
)

[ExtensionAttribute]
public:
generic<typename TSource>
static IQbservable<TSource>^ DistinctUntilChanged(
    IQbservable<TSource>^ source
)

static member DistinctUntilChanged : 
        source:IQbservable<'TSource> -> IQbservable<'TSource> 

JScript does not support generic types and methods.

Type Parameters

• TSource
  The type of source.

Parameters

• source
  Type: System.Reactive.Linq.IQbservable<TSource>
  A queryable observable sequence to retain distinct contiguous elements for.

Return Value

Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence only containing the distinct contiguous elements from the source sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .

See Also

Reference

Qbservable Class

DistinctUntilChanged Overload

System.Reactive.Linq Namespace